/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_spec27_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:14:15,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:14:15,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:14:15,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:14:15,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:14:15,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:14:15,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:14:15,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:14:15,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:14:15,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:14:15,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:14:15,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:14:15,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:14:15,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:14:15,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:14:15,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:14:15,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:14:15,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:14:15,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:14:15,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:14:15,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:14:15,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:14:15,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:14:15,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:14:15,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:14:15,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:14:15,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:14:15,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:14:15,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:14:15,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:14:15,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:14:15,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:14:15,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:14:15,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:14:15,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:14:15,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:14:15,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:14:15,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:14:15,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:14:15,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:14:15,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:14:15,427 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 12:14:15,464 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:14:15,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:14:15,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:14:15,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:14:15,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:14:15,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:14:15,466 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:14:15,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:14:15,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:14:15,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:14:15,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:14:15,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:14:15,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:14:15,467 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:14:15,467 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:14:15,467 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:14:15,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:14:15,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:14:15,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:14:15,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:14:15,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:14:15,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:14:15,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:14:15,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:14:15,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:14:15,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:14:15,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:14:15,470 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:14:15,470 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:14:15,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:14:15,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:14:15,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:14:15,471 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:14:15,471 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:14:15,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:14:15,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:14:15,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:14:15,737 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:14:15,737 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:14:15,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c [2022-01-10 12:14:15,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cf9fe94d/bfbef763bee34b8990e201e519b31e48/FLAG3e1c19527 [2022-01-10 12:14:16,412 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:14:16,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c [2022-01-10 12:14:16,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cf9fe94d/bfbef763bee34b8990e201e519b31e48/FLAG3e1c19527 [2022-01-10 12:14:16,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cf9fe94d/bfbef763bee34b8990e201e519b31e48 [2022-01-10 12:14:16,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:14:16,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:14:16,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:14:16,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:14:16,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:14:16,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:14:16" (1/1) ... [2022-01-10 12:14:16,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5940ce88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:16, skipping insertion in model container [2022-01-10 12:14:16,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:14:16" (1/1) ... [2022-01-10 12:14:16,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:14:16,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:14:17,202 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_spec27_product30.cil.c[47628,47641] [2022-01-10 12:14:17,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:14:17,294 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:14:17,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:14:17,361 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_spec27_product30.cil.c[47628,47641] [2022-01-10 12:14:17,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:14:17,390 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:14:17,434 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_spec27_product30.cil.c[47628,47641] [2022-01-10 12:14:17,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:14:17,480 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:14:17,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:17 WrapperNode [2022-01-10 12:14:17,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:14:17,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:14:17,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:14:17,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:14:17,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:17" (1/1) ... [2022-01-10 12:14:17,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:17" (1/1) ... [2022-01-10 12:14:17,604 INFO L137 Inliner]: procedures = 133, calls = 219, calls flagged for inlining = 130, calls inlined = 161, statements flattened = 2467 [2022-01-10 12:14:17,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:14:17,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:14:17,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:14:17,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:14:17,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:17" (1/1) ... [2022-01-10 12:14:17,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:17" (1/1) ... [2022-01-10 12:14:17,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:17" (1/1) ... [2022-01-10 12:14:17,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:17" (1/1) ... [2022-01-10 12:14:17,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:17" (1/1) ... [2022-01-10 12:14:17,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:17" (1/1) ... [2022-01-10 12:14:17,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:17" (1/1) ... [2022-01-10 12:14:17,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:14:17,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:14:17,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:14:17,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:14:17,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:17" (1/1) ... [2022-01-10 12:14:17,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:14:17,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:14:17,789 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 12:14:17,798 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 12:14:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:14:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:14:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:14:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:14:17,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:14:18,005 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:14:18,007 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:14:19,361 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:14:19,378 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:14:19,379 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:14:19,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:14:19 BoogieIcfgContainer [2022-01-10 12:14:19,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:14:19,382 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:14:19,382 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:14:19,383 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:14:19,386 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:14:19" (1/1) ... [2022-01-10 12:14:19,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:14:19 BasicIcfg [2022-01-10 12:14:19,735 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:14:19,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:14:19,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:14:19,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:14:19,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:14:16" (1/4) ... [2022-01-10 12:14:19,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419803ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:14:19, skipping insertion in model container [2022-01-10 12:14:19,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:17" (2/4) ... [2022-01-10 12:14:19,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419803ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:14:19, skipping insertion in model container [2022-01-10 12:14:19,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:14:19" (3/4) ... [2022-01-10 12:14:19,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419803ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:14:19, skipping insertion in model container [2022-01-10 12:14:19,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:14:19" (4/4) ... [2022-01-10 12:14:19,742 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product30.cil.cTransformedIcfg [2022-01-10 12:14:19,747 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:14:19,747 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:14:19,801 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:14:19,806 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 12:14:19,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:14:19,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 572 states, 569 states have (on average 1.6994727592267136) internal successors, (967), 571 states have internal predecessors, (967), 0 states have call successors, (0), 0 states 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 12:14:19,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:14:19,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:19,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:19,858 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:19,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:19,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1825762761, now seen corresponding path program 1 times [2022-01-10 12:14:19,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:19,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493487761] [2022-01-10 12:14:19,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:19,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:20,368 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 12:14:20,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:20,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493487761] [2022-01-10 12:14:20,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493487761] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:20,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:20,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:14:20,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438413851] [2022-01-10 12:14:20,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:20,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:14:20,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:20,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:14:20,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:14:20,407 INFO L87 Difference]: Start difference. First operand has 572 states, 569 states have (on average 1.6994727592267136) internal successors, (967), 571 states have internal predecessors, (967), 0 states have call successors, (0), 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 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:20,463 INFO L93 Difference]: Finished difference Result 883 states and 1474 transitions. [2022-01-10 12:14:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:14:20,468 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 12:14:20,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:20,480 INFO L225 Difference]: With dead ends: 883 [2022-01-10 12:14:20,480 INFO L226 Difference]: Without dead ends: 541 [2022-01-10 12:14:20,483 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 12:14:20,487 INFO L933 BasicCegarLoop]: 961 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, 961 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 12:14:20,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:20,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-10 12:14:20,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2022-01-10 12:14:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 539 states have (on average 1.7087198515769944) internal successors, (921), 540 states have internal predecessors, (921), 0 states have call successors, (0), 0 states 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 12:14:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 921 transitions. [2022-01-10 12:14:20,567 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 921 transitions. Word has length 69 [2022-01-10 12:14:20,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:20,567 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 921 transitions. [2022-01-10 12:14:20,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:20,568 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 921 transitions. [2022-01-10 12:14:20,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:14:20,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:20,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:20,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:14:20,570 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:20,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:20,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2114424523, now seen corresponding path program 1 times [2022-01-10 12:14:20,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:20,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657030931] [2022-01-10 12:14:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:20,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:20,829 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 12:14:20,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:20,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657030931] [2022-01-10 12:14:20,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657030931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:20,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:20,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:14:20,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64151377] [2022-01-10 12:14:20,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:20,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:14:20,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:20,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:14:20,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:14:20,841 INFO L87 Difference]: Start difference. First operand 541 states and 921 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:20,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:20,939 INFO L93 Difference]: Finished difference Result 1063 states and 1814 transitions. [2022-01-10 12:14:20,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:14:20,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 12:14:20,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:20,945 INFO L225 Difference]: With dead ends: 1063 [2022-01-10 12:14:20,945 INFO L226 Difference]: Without dead ends: 541 [2022-01-10 12:14:20,948 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 12:14:20,950 INFO L933 BasicCegarLoop]: 902 mSDtfsCounter, 896 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:20,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 915 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:20,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-10 12:14:20,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2022-01-10 12:14:20,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 539 states have (on average 1.705009276437848) internal successors, (919), 540 states have internal predecessors, (919), 0 states have call successors, (0), 0 states 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 12:14:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 919 transitions. [2022-01-10 12:14:20,997 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 919 transitions. Word has length 70 [2022-01-10 12:14:20,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:20,998 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 919 transitions. [2022-01-10 12:14:21,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 919 transitions. [2022-01-10 12:14:21,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:14:21,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:21,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:21,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:14:21,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:21,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:21,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1636262133, now seen corresponding path program 1 times [2022-01-10 12:14:21,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:21,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708388021] [2022-01-10 12:14:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:21,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:21,191 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 12:14:21,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:21,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708388021] [2022-01-10 12:14:21,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708388021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:21,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:21,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:21,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466174660] [2022-01-10 12:14:21,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:21,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:21,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:21,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:21,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:21,194 INFO L87 Difference]: Start difference. First operand 541 states and 919 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:21,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:21,431 INFO L93 Difference]: Finished difference Result 2573 states and 4391 transitions. [2022-01-10 12:14:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:14:21,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:14:21,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:21,443 INFO L225 Difference]: With dead ends: 2573 [2022-01-10 12:14:21,444 INFO L226 Difference]: Without dead ends: 2056 [2022-01-10 12:14:21,448 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 12:14:21,453 INFO L933 BasicCegarLoop]: 1761 mSDtfsCounter, 4378 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4378 SdHoareTripleChecker+Valid, 4390 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 12:14:21,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4378 Valid, 4390 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:21,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2022-01-10 12:14:21,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 541. [2022-01-10 12:14:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 539 states have (on average 1.7031539888682745) internal successors, (918), 540 states have internal predecessors, (918), 0 states have call successors, (0), 0 states 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 12:14:21,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 918 transitions. [2022-01-10 12:14:21,502 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 918 transitions. Word has length 72 [2022-01-10 12:14:21,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:21,504 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 918 transitions. [2022-01-10 12:14:21,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 918 transitions. [2022-01-10 12:14:21,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:14:21,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:21,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:21,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:14:21,508 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:21,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1407576081, now seen corresponding path program 1 times [2022-01-10 12:14:21,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:21,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399176422] [2022-01-10 12:14:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:21,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:21,638 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 12:14:21,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:21,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399176422] [2022-01-10 12:14:21,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399176422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:21,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:21,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:14:21,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722950350] [2022-01-10 12:14:21,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:21,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:14:21,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:21,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:14:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:14:21,641 INFO L87 Difference]: Start difference. First operand 541 states and 918 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:21,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:21,708 INFO L93 Difference]: Finished difference Result 1067 states and 1814 transitions. [2022-01-10 12:14:21,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:14:21,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 12:14:21,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:21,711 INFO L225 Difference]: With dead ends: 1067 [2022-01-10 12:14:21,711 INFO L226 Difference]: Without dead ends: 555 [2022-01-10 12:14:21,712 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 12:14:21,713 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 897 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 954 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 12:14:21,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 954 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:21,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-01-10 12:14:21,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 541. [2022-01-10 12:14:21,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 539 states have (on average 1.7012987012987013) internal successors, (917), 540 states have internal predecessors, (917), 0 states have call successors, (0), 0 states 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 12:14:21,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 917 transitions. [2022-01-10 12:14:21,749 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 917 transitions. Word has length 73 [2022-01-10 12:14:21,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:21,749 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 917 transitions. [2022-01-10 12:14:21,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:21,750 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 917 transitions. [2022-01-10 12:14:21,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 12:14:21,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:21,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:21,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:14:21,751 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:21,752 INFO L85 PathProgramCache]: Analyzing trace with hash 989610442, now seen corresponding path program 1 times [2022-01-10 12:14:21,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:21,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672256301] [2022-01-10 12:14:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:21,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:21,904 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 12:14:21,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:21,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672256301] [2022-01-10 12:14:21,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672256301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:21,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:21,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:21,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123270353] [2022-01-10 12:14:21,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:21,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:21,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:21,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:21,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:21,908 INFO L87 Difference]: Start difference. First operand 541 states and 917 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:22,110 INFO L93 Difference]: Finished difference Result 1557 states and 2651 transitions. [2022-01-10 12:14:22,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:14:22,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 12:14:22,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:22,115 INFO L225 Difference]: With dead ends: 1557 [2022-01-10 12:14:22,116 INFO L226 Difference]: Without dead ends: 1050 [2022-01-10 12:14:22,117 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 12:14:22,118 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 4301 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 1866 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 12:14:22,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4301 Valid, 1866 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-01-10 12:14:22,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 541. [2022-01-10 12:14:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 539 states have (on average 1.6975881261595547) internal successors, (915), 540 states have internal predecessors, (915), 0 states have call successors, (0), 0 states 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 12:14:22,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 915 transitions. [2022-01-10 12:14:22,172 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 915 transitions. Word has length 74 [2022-01-10 12:14:22,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:22,172 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 915 transitions. [2022-01-10 12:14:22,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:22,172 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 915 transitions. [2022-01-10 12:14:22,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 12:14:22,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:22,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:22,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:14:22,174 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:22,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:22,175 INFO L85 PathProgramCache]: Analyzing trace with hash 422139213, now seen corresponding path program 1 times [2022-01-10 12:14:22,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:22,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133718097] [2022-01-10 12:14:22,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:22,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:22,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:22,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133718097] [2022-01-10 12:14:22,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133718097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:22,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:22,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:14:22,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146197170] [2022-01-10 12:14:22,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:22,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:14:22,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:22,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:14:22,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:14:22,359 INFO L87 Difference]: Start difference. First operand 541 states and 915 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:22,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:22,927 INFO L93 Difference]: Finished difference Result 3569 states and 5985 transitions. [2022-01-10 12:14:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:14:22,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 12:14:22,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:22,945 INFO L225 Difference]: With dead ends: 3569 [2022-01-10 12:14:22,946 INFO L226 Difference]: Without dead ends: 3306 [2022-01-10 12:14:22,949 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 12:14:22,951 INFO L933 BasicCegarLoop]: 1495 mSDtfsCounter, 6231 mSDsluCounter, 5613 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6231 SdHoareTripleChecker+Valid, 7108 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:22,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6231 Valid, 7108 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:14:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2022-01-10 12:14:23,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 948. [2022-01-10 12:14:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.6987315010570825) internal successors, (1607), 947 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states 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 12:14:23,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1607 transitions. [2022-01-10 12:14:23,062 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1607 transitions. Word has length 76 [2022-01-10 12:14:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:23,063 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1607 transitions. [2022-01-10 12:14:23,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1607 transitions. [2022-01-10 12:14:23,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 12:14:23,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:23,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:23,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:14:23,068 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:23,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:23,068 INFO L85 PathProgramCache]: Analyzing trace with hash 106193602, now seen corresponding path program 1 times [2022-01-10 12:14:23,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:23,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445025079] [2022-01-10 12:14:23,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:23,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:23,219 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 12:14:23,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:23,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445025079] [2022-01-10 12:14:23,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445025079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:23,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:23,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:23,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325241347] [2022-01-10 12:14:23,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:23,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:23,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:23,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:23,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:23,222 INFO L87 Difference]: Start difference. First operand 948 states and 1607 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:23,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:23,391 INFO L93 Difference]: Finished difference Result 1693 states and 2825 transitions. [2022-01-10 12:14:23,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:14:23,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 12:14:23,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:23,398 INFO L225 Difference]: With dead ends: 1693 [2022-01-10 12:14:23,398 INFO L226 Difference]: Without dead ends: 1273 [2022-01-10 12:14:23,399 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 12:14:23,400 INFO L933 BasicCegarLoop]: 901 mSDtfsCounter, 2497 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2497 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:23,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2497 Valid, 2157 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:23,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-01-10 12:14:23,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 948. [2022-01-10 12:14:23,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.6945031712473573) internal successors, (1603), 947 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states 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 12:14:23,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1603 transitions. [2022-01-10 12:14:23,480 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1603 transitions. Word has length 77 [2022-01-10 12:14:23,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:23,480 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1603 transitions. [2022-01-10 12:14:23,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:23,481 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1603 transitions. [2022-01-10 12:14:23,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 12:14:23,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:23,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:23,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:14:23,483 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:23,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:23,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1779305321, now seen corresponding path program 1 times [2022-01-10 12:14:23,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:23,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982478483] [2022-01-10 12:14:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:23,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:23,575 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 12:14:23,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:23,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982478483] [2022-01-10 12:14:23,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982478483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:23,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:23,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:23,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364707157] [2022-01-10 12:14:23,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:23,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:23,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:23,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:23,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:23,577 INFO L87 Difference]: Start difference. First operand 948 states and 1603 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:23,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:23,823 INFO L93 Difference]: Finished difference Result 2721 states and 4638 transitions. [2022-01-10 12:14:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:14:23,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 12:14:23,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:23,832 INFO L225 Difference]: With dead ends: 2721 [2022-01-10 12:14:23,832 INFO L226 Difference]: Without dead ends: 1810 [2022-01-10 12:14:23,837 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 12:14:23,838 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 2676 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 2595 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 12:14:23,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2676 Valid, 2595 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:23,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2022-01-10 12:14:23,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 948. [2022-01-10 12:14:23,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.6923890063424947) internal successors, (1601), 947 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states 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 12:14:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1601 transitions. [2022-01-10 12:14:23,937 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1601 transitions. Word has length 77 [2022-01-10 12:14:23,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:23,937 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1601 transitions. [2022-01-10 12:14:23,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:23,937 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1601 transitions. [2022-01-10 12:14:23,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 12:14:23,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:23,940 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] [2022-01-10 12:14:23,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:14:23,940 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:23,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:23,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1202162177, now seen corresponding path program 1 times [2022-01-10 12:14:23,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:23,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432033111] [2022-01-10 12:14:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:23,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:24,145 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 12:14:24,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:24,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432033111] [2022-01-10 12:14:24,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432033111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:24,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:24,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:14:24,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617913301] [2022-01-10 12:14:24,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:24,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:14:24,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:24,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:14:24,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:14:24,148 INFO L87 Difference]: Start difference. First operand 948 states and 1601 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 12:14:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:25,272 INFO L93 Difference]: Finished difference Result 4232 states and 6882 transitions. [2022-01-10 12:14:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:14:25,272 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 12:14:25,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:25,287 INFO L225 Difference]: With dead ends: 4232 [2022-01-10 12:14:25,287 INFO L226 Difference]: Without dead ends: 3854 [2022-01-10 12:14:25,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:14:25,291 INFO L933 BasicCegarLoop]: 1167 mSDtfsCounter, 9067 mSDsluCounter, 6635 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9067 SdHoareTripleChecker+Valid, 7802 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:25,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9067 Valid, 7802 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:14:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2022-01-10 12:14:25,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 1731. [2022-01-10 12:14:25,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1729 states have (on average 1.7044534412955465) internal successors, (2947), 1730 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states 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 12:14:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2947 transitions. [2022-01-10 12:14:25,487 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2947 transitions. Word has length 78 [2022-01-10 12:14:25,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:25,488 INFO L470 AbstractCegarLoop]: Abstraction has 1731 states and 2947 transitions. [2022-01-10 12:14:25,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 12:14:25,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2947 transitions. [2022-01-10 12:14:25,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 12:14:25,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:25,491 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] [2022-01-10 12:14:25,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:14:25,491 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:25,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:25,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1739217083, now seen corresponding path program 1 times [2022-01-10 12:14:25,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:25,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028309384] [2022-01-10 12:14:25,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:25,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:25,637 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 12:14:25,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:25,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028309384] [2022-01-10 12:14:25,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028309384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:25,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:25,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:25,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520844347] [2022-01-10 12:14:25,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:25,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:25,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:25,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:25,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:25,639 INFO L87 Difference]: Start difference. First operand 1731 states and 2947 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:26,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:26,363 INFO L93 Difference]: Finished difference Result 4687 states and 7753 transitions. [2022-01-10 12:14:26,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:14:26,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 12:14:26,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:26,378 INFO L225 Difference]: With dead ends: 4687 [2022-01-10 12:14:26,379 INFO L226 Difference]: Without dead ends: 4040 [2022-01-10 12:14:26,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:14:26,382 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 2061 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:26,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2061 Valid, 3889 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:14:26,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2022-01-10 12:14:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 2936. [2022-01-10 12:14:26,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2934 states have (on average 1.6942740286298568) internal successors, (4971), 2935 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states 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 12:14:26,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 4971 transitions. [2022-01-10 12:14:26,693 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 4971 transitions. Word has length 79 [2022-01-10 12:14:26,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:26,694 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 4971 transitions. [2022-01-10 12:14:26,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:26,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 4971 transitions. [2022-01-10 12:14:26,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 12:14:26,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:26,698 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] [2022-01-10 12:14:26,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:14:26,698 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:26,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:26,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1750533210, now seen corresponding path program 1 times [2022-01-10 12:14:26,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:26,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888878198] [2022-01-10 12:14:26,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:26,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:26,854 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 12:14:26,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:26,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888878198] [2022-01-10 12:14:26,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888878198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:26,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:26,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:14:26,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149182913] [2022-01-10 12:14:26,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:26,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:14:26,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:26,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:14:26,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:14:26,857 INFO L87 Difference]: Start difference. First operand 2936 states and 4971 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:27,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:27,972 INFO L93 Difference]: Finished difference Result 8932 states and 14973 transitions. [2022-01-10 12:14:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:14:27,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 12:14:27,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:28,002 INFO L225 Difference]: With dead ends: 8932 [2022-01-10 12:14:28,002 INFO L226 Difference]: Without dead ends: 8318 [2022-01-10 12:14:28,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:14:28,006 INFO L933 BasicCegarLoop]: 1701 mSDtfsCounter, 4848 mSDsluCounter, 5710 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4848 SdHoareTripleChecker+Valid, 7411 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:28,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4848 Valid, 7411 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:14:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8318 states. [2022-01-10 12:14:28,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8318 to 3064. [2022-01-10 12:14:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 3062 states have (on average 1.6910516002612672) internal successors, (5178), 3063 states have internal predecessors, (5178), 0 states have call successors, (0), 0 states 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 12:14:28,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 5178 transitions. [2022-01-10 12:14:28,378 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 5178 transitions. Word has length 79 [2022-01-10 12:14:28,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:28,378 INFO L470 AbstractCegarLoop]: Abstraction has 3064 states and 5178 transitions. [2022-01-10 12:14:28,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:28,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 5178 transitions. [2022-01-10 12:14:28,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 12:14:28,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:28,385 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] [2022-01-10 12:14:28,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:14:28,385 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:28,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:28,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1037053238, now seen corresponding path program 1 times [2022-01-10 12:14:28,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:28,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653702121] [2022-01-10 12:14:28,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:28,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:28,528 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 12:14:28,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:28,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653702121] [2022-01-10 12:14:28,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653702121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:28,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:28,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:28,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429932724] [2022-01-10 12:14:28,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:28,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:28,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:28,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:28,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:28,530 INFO L87 Difference]: Start difference. First operand 3064 states and 5178 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:29,685 INFO L93 Difference]: Finished difference Result 9880 states and 16134 transitions. [2022-01-10 12:14:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:14:29,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 12:14:29,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:29,702 INFO L225 Difference]: With dead ends: 9880 [2022-01-10 12:14:29,702 INFO L226 Difference]: Without dead ends: 8854 [2022-01-10 12:14:29,706 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 12:14:29,706 INFO L933 BasicCegarLoop]: 916 mSDtfsCounter, 2926 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2926 SdHoareTripleChecker+Valid, 4080 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:29,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2926 Valid, 4080 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8854 states. [2022-01-10 12:14:30,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8854 to 4350. [2022-01-10 12:14:30,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4350 states, 4348 states have (on average 1.6628334866605337) internal successors, (7230), 4349 states have internal predecessors, (7230), 0 states have call successors, (0), 0 states 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 12:14:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4350 states to 4350 states and 7230 transitions. [2022-01-10 12:14:30,150 INFO L78 Accepts]: Start accepts. Automaton has 4350 states and 7230 transitions. Word has length 79 [2022-01-10 12:14:30,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:30,151 INFO L470 AbstractCegarLoop]: Abstraction has 4350 states and 7230 transitions. [2022-01-10 12:14:30,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:30,151 INFO L276 IsEmpty]: Start isEmpty. Operand 4350 states and 7230 transitions. [2022-01-10 12:14:30,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 12:14:30,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:30,161 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] [2022-01-10 12:14:30,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:14:30,161 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:30,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:30,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1305601064, now seen corresponding path program 1 times [2022-01-10 12:14:30,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:30,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111852609] [2022-01-10 12:14:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:30,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:30,273 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 12:14:30,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:30,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111852609] [2022-01-10 12:14:30,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111852609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:30,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:30,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:30,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068769368] [2022-01-10 12:14:30,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:30,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:30,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:30,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:30,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:30,275 INFO L87 Difference]: Start difference. First operand 4350 states and 7230 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 12:14:31,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:31,290 INFO L93 Difference]: Finished difference Result 9260 states and 14994 transitions. [2022-01-10 12:14:31,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:14:31,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-01-10 12:14:31,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:31,306 INFO L225 Difference]: With dead ends: 9260 [2022-01-10 12:14:31,306 INFO L226 Difference]: Without dead ends: 7804 [2022-01-10 12:14:31,310 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 12:14:31,310 INFO L933 BasicCegarLoop]: 1163 mSDtfsCounter, 1345 mSDsluCounter, 3207 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 4370 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:31,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 4370 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:31,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7804 states. [2022-01-10 12:14:31,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7804 to 4386. [2022-01-10 12:14:31,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4384 states have (on average 1.657390510948905) internal successors, (7266), 4385 states have internal predecessors, (7266), 0 states have call successors, (0), 0 states 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 12:14:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 7266 transitions. [2022-01-10 12:14:31,824 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 7266 transitions. Word has length 80 [2022-01-10 12:14:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:31,825 INFO L470 AbstractCegarLoop]: Abstraction has 4386 states and 7266 transitions. [2022-01-10 12:14:31,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 12:14:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 7266 transitions. [2022-01-10 12:14:31,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 12:14:31,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:31,831 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] [2022-01-10 12:14:31,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:14:31,831 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:31,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:31,832 INFO L85 PathProgramCache]: Analyzing trace with hash 431384776, now seen corresponding path program 1 times [2022-01-10 12:14:31,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:31,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358133215] [2022-01-10 12:14:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:31,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:31,973 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 12:14:31,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:31,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358133215] [2022-01-10 12:14:31,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358133215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:31,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:31,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:14:31,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24458606] [2022-01-10 12:14:31,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:31,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:14:31,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:31,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:14:31,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:14:31,975 INFO L87 Difference]: Start difference. First operand 4386 states and 7266 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 12:14:32,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:32,710 INFO L93 Difference]: Finished difference Result 6898 states and 11257 transitions. [2022-01-10 12:14:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 12:14:32,711 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-01-10 12:14:32,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:32,720 INFO L225 Difference]: With dead ends: 6898 [2022-01-10 12:14:32,721 INFO L226 Difference]: Without dead ends: 4542 [2022-01-10 12:14:32,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:14:32,725 INFO L933 BasicCegarLoop]: 888 mSDtfsCounter, 2696 mSDsluCounter, 4829 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2696 SdHoareTripleChecker+Valid, 5717 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:32,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2696 Valid, 5717 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4542 states. [2022-01-10 12:14:33,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4542 to 4354. [2022-01-10 12:14:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4354 states, 4352 states have (on average 1.6511948529411764) internal successors, (7186), 4353 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states 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 12:14:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 7186 transitions. [2022-01-10 12:14:33,275 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 7186 transitions. Word has length 80 [2022-01-10 12:14:33,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:33,276 INFO L470 AbstractCegarLoop]: Abstraction has 4354 states and 7186 transitions. [2022-01-10 12:14:33,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 12:14:33,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 7186 transitions. [2022-01-10 12:14:33,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 12:14:33,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:33,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:33,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:14:33,282 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:33,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:33,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1306108566, now seen corresponding path program 1 times [2022-01-10 12:14:33,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:33,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80190955] [2022-01-10 12:14:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:33,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:33,386 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 12:14:33,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:33,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80190955] [2022-01-10 12:14:33,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80190955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:33,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:33,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:33,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557602390] [2022-01-10 12:14:33,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:33,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:14:33,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:33,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:14:33,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:14:33,389 INFO L87 Difference]: Start difference. First operand 4354 states and 7186 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 12:14:34,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:34,777 INFO L93 Difference]: Finished difference Result 12238 states and 19394 transitions. [2022-01-10 12:14:34,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:14:34,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 12:14:34,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:34,797 INFO L225 Difference]: With dead ends: 12238 [2022-01-10 12:14:34,797 INFO L226 Difference]: Without dead ends: 9554 [2022-01-10 12:14:34,802 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 12:14:34,802 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 925 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:34,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [925 Valid, 2977 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:14:34,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9554 states. [2022-01-10 12:14:35,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9554 to 4386. [2022-01-10 12:14:35,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4384 states have (on average 1.646441605839416) internal successors, (7218), 4385 states have internal predecessors, (7218), 0 states have call successors, (0), 0 states 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 12:14:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 7218 transitions. [2022-01-10 12:14:35,345 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 7218 transitions. Word has length 83 [2022-01-10 12:14:35,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:35,346 INFO L470 AbstractCegarLoop]: Abstraction has 4386 states and 7218 transitions. [2022-01-10 12:14:35,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 12:14:35,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 7218 transitions. [2022-01-10 12:14:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 12:14:35,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:35,351 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] [2022-01-10 12:14:35,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:14:35,351 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:35,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:35,351 INFO L85 PathProgramCache]: Analyzing trace with hash -542762910, now seen corresponding path program 1 times [2022-01-10 12:14:35,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:35,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949046743] [2022-01-10 12:14:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:35,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:35,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:35,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949046743] [2022-01-10 12:14:35,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949046743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:35,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:35,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:14:35,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727275035] [2022-01-10 12:14:35,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:35,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:14:35,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:35,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:14:35,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:14:35,485 INFO L87 Difference]: Start difference. First operand 4386 states and 7218 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 12:14:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:37,403 INFO L93 Difference]: Finished difference Result 12070 states and 19217 transitions. [2022-01-10 12:14:37,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:14:37,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 12:14:37,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:37,420 INFO L225 Difference]: With dead ends: 12070 [2022-01-10 12:14:37,421 INFO L226 Difference]: Without dead ends: 10026 [2022-01-10 12:14:37,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-01-10 12:14:37,426 INFO L933 BasicCegarLoop]: 1254 mSDtfsCounter, 4928 mSDsluCounter, 4773 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4928 SdHoareTripleChecker+Valid, 6027 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:37,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4928 Valid, 6027 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:14:37,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10026 states. [2022-01-10 12:14:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10026 to 5270. [2022-01-10 12:14:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 5268 states have (on average 1.6366742596810935) internal successors, (8622), 5269 states have internal predecessors, (8622), 0 states have call successors, (0), 0 states 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 12:14:38,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 8622 transitions. [2022-01-10 12:14:38,038 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 8622 transitions. Word has length 83 [2022-01-10 12:14:38,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:38,038 INFO L470 AbstractCegarLoop]: Abstraction has 5270 states and 8622 transitions. [2022-01-10 12:14:38,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 12:14:38,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 8622 transitions. [2022-01-10 12:14:38,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 12:14:38,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:38,043 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] [2022-01-10 12:14:38,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:14:38,044 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:38,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:38,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1907543472, now seen corresponding path program 1 times [2022-01-10 12:14:38,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:38,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903984220] [2022-01-10 12:14:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:38,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:38,117 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 12:14:38,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:38,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903984220] [2022-01-10 12:14:38,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903984220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:38,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:38,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:38,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461253979] [2022-01-10 12:14:38,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:38,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:14:38,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:14:38,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:14:38,119 INFO L87 Difference]: Start difference. First operand 5270 states and 8622 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 12:14:39,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:39,105 INFO L93 Difference]: Finished difference Result 8260 states and 13287 transitions. [2022-01-10 12:14:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:14:39,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 12:14:39,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:39,112 INFO L225 Difference]: With dead ends: 8260 [2022-01-10 12:14:39,112 INFO L226 Difference]: Without dead ends: 6560 [2022-01-10 12:14:39,114 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 12:14:39,115 INFO L933 BasicCegarLoop]: 903 mSDtfsCounter, 1131 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:39,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 2025 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:39,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6560 states. [2022-01-10 12:14:39,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6560 to 5270. [2022-01-10 12:14:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 5268 states have (on average 1.6359149582384207) internal successors, (8618), 5269 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states 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 12:14:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 8618 transitions. [2022-01-10 12:14:39,816 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 8618 transitions. Word has length 83 [2022-01-10 12:14:39,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:39,816 INFO L470 AbstractCegarLoop]: Abstraction has 5270 states and 8618 transitions. [2022-01-10 12:14:39,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 12:14:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 8618 transitions. [2022-01-10 12:14:39,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 12:14:39,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:39,821 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] [2022-01-10 12:14:39,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:14:39,821 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:39,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:39,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1362729903, now seen corresponding path program 1 times [2022-01-10 12:14:39,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:39,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334514756] [2022-01-10 12:14:39,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:39,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:39,911 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 12:14:39,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:39,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334514756] [2022-01-10 12:14:39,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334514756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:39,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:39,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:39,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706382164] [2022-01-10 12:14:39,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:39,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:39,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:39,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:39,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:39,913 INFO L87 Difference]: Start difference. First operand 5270 states and 8618 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 12:14:43,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:43,639 INFO L93 Difference]: Finished difference Result 27046 states and 42654 transitions. [2022-01-10 12:14:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:14:43,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 12:14:43,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:43,716 INFO L225 Difference]: With dead ends: 27046 [2022-01-10 12:14:43,716 INFO L226 Difference]: Without dead ends: 23524 [2022-01-10 12:14:43,725 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 12:14:43,725 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 3320 mSDsluCounter, 3209 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3320 SdHoareTripleChecker+Valid, 4159 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:43,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3320 Valid, 4159 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:14:43,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23524 states. [2022-01-10 12:14:45,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23524 to 9796. [2022-01-10 12:14:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9796 states, 9794 states have (on average 1.637941596896059) internal successors, (16042), 9795 states have internal predecessors, (16042), 0 states have call successors, (0), 0 states 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 12:14:45,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9796 states to 9796 states and 16042 transitions. [2022-01-10 12:14:45,079 INFO L78 Accepts]: Start accepts. Automaton has 9796 states and 16042 transitions. Word has length 83 [2022-01-10 12:14:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:45,079 INFO L470 AbstractCegarLoop]: Abstraction has 9796 states and 16042 transitions. [2022-01-10 12:14:45,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 12:14:45,080 INFO L276 IsEmpty]: Start isEmpty. Operand 9796 states and 16042 transitions. [2022-01-10 12:14:45,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 12:14:45,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:45,088 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] [2022-01-10 12:14:45,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:14:45,089 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:45,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:45,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2126075559, now seen corresponding path program 1 times [2022-01-10 12:14:45,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:45,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902302789] [2022-01-10 12:14:45,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:45,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:45,201 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 12:14:45,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:45,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902302789] [2022-01-10 12:14:45,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902302789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:45,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:45,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:45,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869769524] [2022-01-10 12:14:45,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:45,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:45,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:45,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:45,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:45,204 INFO L87 Difference]: Start difference. First operand 9796 states and 16042 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 12:14:47,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:47,892 INFO L93 Difference]: Finished difference Result 23632 states and 37710 transitions. [2022-01-10 12:14:47,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:14:47,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 12:14:47,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:47,916 INFO L225 Difference]: With dead ends: 23632 [2022-01-10 12:14:47,917 INFO L226 Difference]: Without dead ends: 18020 [2022-01-10 12:14:47,927 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 12:14:47,928 INFO L933 BasicCegarLoop]: 1645 mSDtfsCounter, 2282 mSDsluCounter, 3420 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2282 SdHoareTripleChecker+Valid, 5065 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:47,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2282 Valid, 5065 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:47,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18020 states. [2022-01-10 12:14:49,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18020 to 10708. [2022-01-10 12:14:49,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10708 states, 10706 states have (on average 1.614608630674388) internal successors, (17286), 10707 states have internal predecessors, (17286), 0 states have call successors, (0), 0 states 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 12:14:49,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10708 states to 10708 states and 17286 transitions. [2022-01-10 12:14:49,454 INFO L78 Accepts]: Start accepts. Automaton has 10708 states and 17286 transitions. Word has length 83 [2022-01-10 12:14:49,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:49,455 INFO L470 AbstractCegarLoop]: Abstraction has 10708 states and 17286 transitions. [2022-01-10 12:14:49,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 12:14:49,455 INFO L276 IsEmpty]: Start isEmpty. Operand 10708 states and 17286 transitions. [2022-01-10 12:14:49,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 12:14:49,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:49,464 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] [2022-01-10 12:14:49,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:14:49,464 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:49,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:49,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1692674734, now seen corresponding path program 1 times [2022-01-10 12:14:49,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:49,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852279982] [2022-01-10 12:14:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:49,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:49,592 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 12:14:49,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:49,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852279982] [2022-01-10 12:14:49,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852279982] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:49,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:49,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:14:49,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515981911] [2022-01-10 12:14:49,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:49,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:14:49,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:49,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:14:49,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:14:49,594 INFO L87 Difference]: Start difference. First operand 10708 states and 17286 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:58,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:58,285 INFO L93 Difference]: Finished difference Result 66098 states and 105952 transitions. [2022-01-10 12:14:58,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:14:58,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 12:14:58,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:58,387 INFO L225 Difference]: With dead ends: 66098 [2022-01-10 12:14:58,387 INFO L226 Difference]: Without dead ends: 60534 [2022-01-10 12:14:58,409 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 12:14:58,410 INFO L933 BasicCegarLoop]: 1357 mSDtfsCounter, 4891 mSDsluCounter, 4110 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4891 SdHoareTripleChecker+Valid, 5467 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:58,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4891 Valid, 5467 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:58,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60534 states. [2022-01-10 12:15:01,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60534 to 21198. [2022-01-10 12:15:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21198 states, 21196 states have (on average 1.6142668428005285) internal successors, (34216), 21197 states have internal predecessors, (34216), 0 states have call successors, (0), 0 states 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 12:15:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21198 states to 21198 states and 34216 transitions. [2022-01-10 12:15:01,670 INFO L78 Accepts]: Start accepts. Automaton has 21198 states and 34216 transitions. Word has length 84 [2022-01-10 12:15:01,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:01,670 INFO L470 AbstractCegarLoop]: Abstraction has 21198 states and 34216 transitions. [2022-01-10 12:15:01,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:01,670 INFO L276 IsEmpty]: Start isEmpty. Operand 21198 states and 34216 transitions. [2022-01-10 12:15:01,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 12:15:01,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:01,685 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] [2022-01-10 12:15:01,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:15:01,685 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:15:01,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:01,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1673400475, now seen corresponding path program 1 times [2022-01-10 12:15:01,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:01,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507786715] [2022-01-10 12:15:01,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:01,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:01,794 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 12:15:01,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:01,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507786715] [2022-01-10 12:15:01,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507786715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:01,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:01,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:15:01,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950413727] [2022-01-10 12:15:01,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:01,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:15:01,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:01,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:15:01,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:15:01,796 INFO L87 Difference]: Start difference. First operand 21198 states and 34216 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:05,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:05,335 INFO L93 Difference]: Finished difference Result 37524 states and 59819 transitions. [2022-01-10 12:15:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:15:05,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 12:15:05,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:05,364 INFO L225 Difference]: With dead ends: 37524 [2022-01-10 12:15:05,364 INFO L226 Difference]: Without dead ends: 22604 [2022-01-10 12:15:05,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-01-10 12:15:05,381 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 2154 mSDsluCounter, 3909 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 4928 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:05,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2154 Valid, 4928 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:15:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22604 states. [2022-01-10 12:15:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22604 to 20902. [2022-01-10 12:15:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20902 states, 20900 states have (on average 1.610334928229665) internal successors, (33656), 20901 states have internal predecessors, (33656), 0 states have call successors, (0), 0 states 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 12:15:08,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20902 states to 20902 states and 33656 transitions. [2022-01-10 12:15:08,546 INFO L78 Accepts]: Start accepts. Automaton has 20902 states and 33656 transitions. Word has length 84 [2022-01-10 12:15:08,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:08,547 INFO L470 AbstractCegarLoop]: Abstraction has 20902 states and 33656 transitions. [2022-01-10 12:15:08,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:08,547 INFO L276 IsEmpty]: Start isEmpty. Operand 20902 states and 33656 transitions. [2022-01-10 12:15:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 12:15:08,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:08,561 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] [2022-01-10 12:15:08,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:15:08,561 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:15:08,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:08,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1240654007, now seen corresponding path program 1 times [2022-01-10 12:15:08,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:08,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168849617] [2022-01-10 12:15:08,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:08,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:08,688 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 12:15:08,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:08,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168849617] [2022-01-10 12:15:08,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168849617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:08,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:08,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:15:08,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300936837] [2022-01-10 12:15:08,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:08,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:15:08,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:08,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:15:08,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:15:08,690 INFO L87 Difference]: Start difference. First operand 20902 states and 33656 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 12:15:13,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:13,322 INFO L93 Difference]: Finished difference Result 35864 states and 56927 transitions. [2022-01-10 12:15:13,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:15:13,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 12:15:13,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:13,360 INFO L225 Difference]: With dead ends: 35864 [2022-01-10 12:15:13,360 INFO L226 Difference]: Without dead ends: 27792 [2022-01-10 12:15:13,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2022-01-10 12:15:13,373 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 4610 mSDsluCounter, 3380 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4610 SdHoareTripleChecker+Valid, 4388 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:13,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4610 Valid, 4388 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:15:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27792 states. [2022-01-10 12:15:16,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27792 to 20862. [2022-01-10 12:15:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20862 states, 20860 states have (on average 1.609587727708533) internal successors, (33576), 20861 states have internal predecessors, (33576), 0 states have call successors, (0), 0 states 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 12:15:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20862 states to 20862 states and 33576 transitions. [2022-01-10 12:15:16,509 INFO L78 Accepts]: Start accepts. Automaton has 20862 states and 33576 transitions. Word has length 85 [2022-01-10 12:15:16,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:16,509 INFO L470 AbstractCegarLoop]: Abstraction has 20862 states and 33576 transitions. [2022-01-10 12:15:16,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 12:15:16,509 INFO L276 IsEmpty]: Start isEmpty. Operand 20862 states and 33576 transitions. [2022-01-10 12:15:16,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 12:15:16,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:16,522 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] [2022-01-10 12:15:16,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 12:15:16,522 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:15:16,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:16,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1307660760, now seen corresponding path program 1 times [2022-01-10 12:15:16,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:16,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890779512] [2022-01-10 12:15:16,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:16,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms