/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec7_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:59:18,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:59:18,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:59:18,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:59:18,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:59:18,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:59:18,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:59:18,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:59:18,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:59:18,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:59:18,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:59:18,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:59:18,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:59:18,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:59:18,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:59:18,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:59:18,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:59:18,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:59:18,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:59:18,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:59:18,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:59:18,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:59:18,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:59:18,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:59:18,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:59:18,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:59:18,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:59:18,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:59:18,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:59:18,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:59:18,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:59:18,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:59:18,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:59:18,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:59:18,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:59:18,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:59:18,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:59:18,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:59:18,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:59:18,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:59:18,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:59:18,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:59:18,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:59:18,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:59:18,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:59:18,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:59:18,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:59:18,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:59:18,724 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:59:18,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:59:18,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:59:18,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:59:18,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:59:18,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:59:18,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:59:18,726 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:59:18,726 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:59:18,726 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:59:18,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:59:18,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:59:18,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:59:18,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:59:18,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:59:18,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:59:18,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:59:18,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:59:18,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:59:18,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:59:18,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:59:18,728 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:59:18,728 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:59:18,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:59:18,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:59:18,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:59:18,729 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:59:18,729 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:59:18,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:59:18,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:59:18,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:59:18,955 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:59:18,956 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:59:18,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product31.cil.c [2022-01-10 23:59:19,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b812022/fb7d53a6c31546c48a0e144f4369af7b/FLAG1727941a8 [2022-01-10 23:59:19,502 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:59:19,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product31.cil.c [2022-01-10 23:59:19,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b812022/fb7d53a6c31546c48a0e144f4369af7b/FLAG1727941a8 [2022-01-10 23:59:19,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b812022/fb7d53a6c31546c48a0e144f4369af7b [2022-01-10 23:59:19,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:59:19,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:59:19,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:59:19,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:59:19,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:59:19,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:59:19" (1/1) ... [2022-01-10 23:59:19,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f4d1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:19, skipping insertion in model container [2022-01-10 23:59:19,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:59:19" (1/1) ... [2022-01-10 23:59:19,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:59:19,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:59:19,820 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product31.cil.c[7290,7303] [2022-01-10 23:59:20,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:20,025 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:59:20,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:59:20,043 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product31.cil.c[7290,7303] [2022-01-10 23:59:20,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:20,096 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:59:20,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product31.cil.c[7290,7303] [2022-01-10 23:59:20,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:20,197 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:59:20,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:20 WrapperNode [2022-01-10 23:59:20,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:59:20,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:59:20,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:59:20,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:59:20,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:20" (1/1) ... [2022-01-10 23:59:20,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:20" (1/1) ... [2022-01-10 23:59:20,311 INFO L137 Inliner]: procedures = 133, calls = 215, calls flagged for inlining = 128, calls inlined = 189, statements flattened = 2794 [2022-01-10 23:59:20,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:59:20,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:59:20,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:59:20,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:59:20,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:20" (1/1) ... [2022-01-10 23:59:20,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:20" (1/1) ... [2022-01-10 23:59:20,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:20" (1/1) ... [2022-01-10 23:59:20,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:20" (1/1) ... [2022-01-10 23:59:20,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:20" (1/1) ... [2022-01-10 23:59:20,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:20" (1/1) ... [2022-01-10 23:59:20,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:20" (1/1) ... [2022-01-10 23:59:20,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:59:20,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:59:20,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:59:20,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:59:20,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:20" (1/1) ... [2022-01-10 23:59:20,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:59:20,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:59:20,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 23:59:20,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:59:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:59:20,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:59:20,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:59:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:59:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:59:20,735 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:59:20,736 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:59:21,721 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:59:21,734 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:59:21,734 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:59:21,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:21 BoogieIcfgContainer [2022-01-10 23:59:21,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:59:21,736 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:59:21,736 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:59:21,738 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:59:21,740 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:21" (1/1) ... [2022-01-10 23:59:21,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:59:21 BasicIcfg [2022-01-10 23:59:21,966 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:59:21,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:59:21,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:59:21,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:59:21,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:59:19" (1/4) ... [2022-01-10 23:59:21,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790356d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:59:21, skipping insertion in model container [2022-01-10 23:59:21,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:20" (2/4) ... [2022-01-10 23:59:21,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790356d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:59:21, skipping insertion in model container [2022-01-10 23:59:21,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:21" (3/4) ... [2022-01-10 23:59:21,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790356d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:59:21, skipping insertion in model container [2022-01-10 23:59:21,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:59:21" (4/4) ... [2022-01-10 23:59:21,971 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product31.cil.cTransformedIcfg [2022-01-10 23:59:21,974 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:59:21,974 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:59:22,013 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:59:22,018 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 23:59:22,018 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:59:22,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 612 states, 609 states have (on average 1.6732348111658457) internal successors, (1019), 611 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:22,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 23:59:22,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:22,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:22,052 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:22,056 INFO L85 PathProgramCache]: Analyzing trace with hash 704469467, now seen corresponding path program 1 times [2022-01-10 23:59:22,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:22,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432350147] [2022-01-10 23:59:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:22,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:22,482 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 23:59:22,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:22,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432350147] [2022-01-10 23:59:22,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432350147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:22,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:22,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:59:22,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009964371] [2022-01-10 23:59:22,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:22,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:59:22,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:22,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:59:22,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:59:22,511 INFO L87 Difference]: Start difference. First operand has 612 states, 609 states have (on average 1.6732348111658457) internal successors, (1019), 611 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:22,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:22,567 INFO L93 Difference]: Finished difference Result 963 states and 1578 transitions. [2022-01-10 23:59:22,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:59:22,572 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 23:59:22,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:22,586 INFO L225 Difference]: With dead ends: 963 [2022-01-10 23:59:22,586 INFO L226 Difference]: Without dead ends: 513 [2022-01-10 23:59:22,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:59:22,607 INFO L933 BasicCegarLoop]: 1013 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, 1013 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:22,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:22,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-01-10 23:59:22,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2022-01-10 23:59:22,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 511 states have (on average 1.6888454011741683) internal successors, (863), 512 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:22,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 863 transitions. [2022-01-10 23:59:22,666 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 863 transitions. Word has length 59 [2022-01-10 23:59:22,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:22,667 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 863 transitions. [2022-01-10 23:59:22,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:22,667 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 863 transitions. [2022-01-10 23:59:22,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 23:59:22,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:22,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:22,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:59:22,669 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:22,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:22,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2079633475, now seen corresponding path program 1 times [2022-01-10 23:59:22,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:22,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8703571] [2022-01-10 23:59:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:22,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:22,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:22,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8703571] [2022-01-10 23:59:22,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8703571] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:22,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:22,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:59:22,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722879897] [2022-01-10 23:59:22,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:22,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:59:22,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:22,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:59:22,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:22,872 INFO L87 Difference]: Start difference. First operand 513 states and 863 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:22,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:22,976 INFO L93 Difference]: Finished difference Result 1007 states and 1698 transitions. [2022-01-10 23:59:22,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:59:22,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 23:59:22,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:22,983 INFO L225 Difference]: With dead ends: 1007 [2022-01-10 23:59:22,983 INFO L226 Difference]: Without dead ends: 513 [2022-01-10 23:59:22,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:22,986 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 838 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:22,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [838 Valid, 857 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-01-10 23:59:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2022-01-10 23:59:23,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 511 states have (on average 1.6849315068493151) internal successors, (861), 512 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 861 transitions. [2022-01-10 23:59:23,017 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 861 transitions. Word has length 60 [2022-01-10 23:59:23,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:23,018 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 861 transitions. [2022-01-10 23:59:23,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 861 transitions. [2022-01-10 23:59:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:59:23,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:23,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:23,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:59:23,022 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:23,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:23,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1888035267, now seen corresponding path program 1 times [2022-01-10 23:59:23,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:23,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366910022] [2022-01-10 23:59:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:23,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:23,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:23,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:23,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366910022] [2022-01-10 23:59:23,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366910022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:23,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:23,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:23,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029329061] [2022-01-10 23:59:23,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:23,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:23,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:23,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:23,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:23,154 INFO L87 Difference]: Start difference. First operand 513 states and 861 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:23,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:23,377 INFO L93 Difference]: Finished difference Result 2433 states and 4101 transitions. [2022-01-10 23:59:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:59:23,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 23:59:23,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:23,385 INFO L225 Difference]: With dead ends: 2433 [2022-01-10 23:59:23,385 INFO L226 Difference]: Without dead ends: 1944 [2022-01-10 23:59:23,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:59:23,392 INFO L933 BasicCegarLoop]: 1645 mSDtfsCounter, 4088 mSDsluCounter, 2455 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4100 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:23,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4088 Valid, 4100 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:23,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2022-01-10 23:59:23,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 513. [2022-01-10 23:59:23,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 511 states have (on average 1.6829745596868884) internal successors, (860), 512 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:23,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 860 transitions. [2022-01-10 23:59:23,422 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 860 transitions. Word has length 62 [2022-01-10 23:59:23,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:23,422 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 860 transitions. [2022-01-10 23:59:23,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:23,422 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 860 transitions. [2022-01-10 23:59:23,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:59:23,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:23,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:23,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:59:23,423 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:23,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:23,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1658682293, now seen corresponding path program 1 times [2022-01-10 23:59:23,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:23,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629917866] [2022-01-10 23:59:23,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:23,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:23,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:23,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:23,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629917866] [2022-01-10 23:59:23,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629917866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:23,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:23,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:59:23,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281455423] [2022-01-10 23:59:23,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:23,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:59:23,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:23,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:59:23,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:23,523 INFO L87 Difference]: Start difference. First operand 513 states and 860 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:23,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:23,559 INFO L93 Difference]: Finished difference Result 1011 states and 1698 transitions. [2022-01-10 23:59:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:59:23,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 23:59:23,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:23,562 INFO L225 Difference]: With dead ends: 1011 [2022-01-10 23:59:23,562 INFO L226 Difference]: Without dead ends: 527 [2022-01-10 23:59:23,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:23,570 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 839 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:23,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 896 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:23,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-01-10 23:59:23,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 513. [2022-01-10 23:59:23,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 511 states have (on average 1.6810176125244618) internal successors, (859), 512 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:23,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 859 transitions. [2022-01-10 23:59:23,605 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 859 transitions. Word has length 63 [2022-01-10 23:59:23,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:23,605 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 859 transitions. [2022-01-10 23:59:23,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:23,605 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 859 transitions. [2022-01-10 23:59:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 23:59:23,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:23,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:23,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:59:23,607 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:23,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:23,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1860219388, now seen corresponding path program 1 times [2022-01-10 23:59:23,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:23,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96888671] [2022-01-10 23:59:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:23,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:23,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:23,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96888671] [2022-01-10 23:59:23,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96888671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:23,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:23,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:23,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801210791] [2022-01-10 23:59:23,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:23,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:23,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:23,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:23,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:23,736 INFO L87 Difference]: Start difference. First operand 513 states and 859 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:23,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:23,876 INFO L93 Difference]: Finished difference Result 1473 states and 2477 transitions. [2022-01-10 23:59:23,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:59:23,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 23:59:23,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:23,879 INFO L225 Difference]: With dead ends: 1473 [2022-01-10 23:59:23,880 INFO L226 Difference]: Without dead ends: 994 [2022-01-10 23:59:23,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:59:23,881 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 4011 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4011 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:23,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4011 Valid, 1750 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2022-01-10 23:59:23,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 513. [2022-01-10 23:59:23,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 511 states have (on average 1.6771037181996087) internal successors, (857), 512 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:23,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 857 transitions. [2022-01-10 23:59:23,913 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 857 transitions. Word has length 64 [2022-01-10 23:59:23,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:23,913 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 857 transitions. [2022-01-10 23:59:23,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 857 transitions. [2022-01-10 23:59:23,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 23:59:23,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:23,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:23,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:59:23,914 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:23,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:23,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1494037633, now seen corresponding path program 1 times [2022-01-10 23:59:23,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:23,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191735801] [2022-01-10 23:59:23,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:23,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:23,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:23,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191735801] [2022-01-10 23:59:23,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191735801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:23,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:23,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:23,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186549350] [2022-01-10 23:59:23,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:23,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:23,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:23,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:23,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:23,999 INFO L87 Difference]: Start difference. First operand 513 states and 857 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:24,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:24,393 INFO L93 Difference]: Finished difference Result 3261 states and 5347 transitions. [2022-01-10 23:59:24,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:59:24,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 23:59:24,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:24,403 INFO L225 Difference]: With dead ends: 3261 [2022-01-10 23:59:24,404 INFO L226 Difference]: Without dead ends: 3026 [2022-01-10 23:59:24,405 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 23:59:24,406 INFO L933 BasicCegarLoop]: 1295 mSDtfsCounter, 5619 mSDsluCounter, 5065 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5619 SdHoareTripleChecker+Valid, 6360 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:24,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5619 Valid, 6360 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:59:24,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2022-01-10 23:59:24,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 940. [2022-01-10 23:59:24,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 938 states have (on average 1.6791044776119404) internal successors, (1575), 939 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1575 transitions. [2022-01-10 23:59:24,471 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1575 transitions. Word has length 66 [2022-01-10 23:59:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:24,473 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 1575 transitions. [2022-01-10 23:59:24,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1575 transitions. [2022-01-10 23:59:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:59:24,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:24,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:24,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:59:24,475 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:24,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1328999899, now seen corresponding path program 1 times [2022-01-10 23:59:24,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:24,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714725995] [2022-01-10 23:59:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:24,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:24,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:24,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714725995] [2022-01-10 23:59:24,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714725995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:24,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:24,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:24,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163586611] [2022-01-10 23:59:24,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:24,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:24,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:24,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:24,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:24,565 INFO L87 Difference]: Start difference. First operand 940 states and 1575 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:25,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:25,040 INFO L93 Difference]: Finished difference Result 5854 states and 9631 transitions. [2022-01-10 23:59:25,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:59:25,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 23:59:25,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:25,068 INFO L225 Difference]: With dead ends: 5854 [2022-01-10 23:59:25,068 INFO L226 Difference]: Without dead ends: 5458 [2022-01-10 23:59:25,070 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 23:59:25,070 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 4687 mSDsluCounter, 4615 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 6301 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:25,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4687 Valid, 6301 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:25,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5458 states. [2022-01-10 23:59:25,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5458 to 1771. [2022-01-10 23:59:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1769 states have (on average 1.6851328434143584) internal successors, (2981), 1770 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:25,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2981 transitions. [2022-01-10 23:59:25,191 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2981 transitions. Word has length 67 [2022-01-10 23:59:25,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:25,192 INFO L470 AbstractCegarLoop]: Abstraction has 1771 states and 2981 transitions. [2022-01-10 23:59:25,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:25,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2981 transitions. [2022-01-10 23:59:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:59:25,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:25,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:25,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:59:25,194 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:25,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:25,194 INFO L85 PathProgramCache]: Analyzing trace with hash -130335941, now seen corresponding path program 1 times [2022-01-10 23:59:25,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:25,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671329386] [2022-01-10 23:59:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:25,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:25,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:25,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671329386] [2022-01-10 23:59:25,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671329386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:25,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:25,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:25,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512053596] [2022-01-10 23:59:25,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:25,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:25,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:25,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:25,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:25,249 INFO L87 Difference]: Start difference. First operand 1771 states and 2981 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:25,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:25,524 INFO L93 Difference]: Finished difference Result 5125 states and 8683 transitions. [2022-01-10 23:59:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:59:25,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 23:59:25,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:25,535 INFO L225 Difference]: With dead ends: 5125 [2022-01-10 23:59:25,535 INFO L226 Difference]: Without dead ends: 3404 [2022-01-10 23:59:25,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:59:25,537 INFO L933 BasicCegarLoop]: 1617 mSDtfsCounter, 2508 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2508 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:25,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2508 Valid, 2427 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:25,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2022-01-10 23:59:25,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 1771. [2022-01-10 23:59:25,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1769 states have (on average 1.6840022611644998) internal successors, (2979), 1770 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2979 transitions. [2022-01-10 23:59:25,657 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2979 transitions. Word has length 67 [2022-01-10 23:59:25,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:25,657 INFO L470 AbstractCegarLoop]: Abstraction has 1771 states and 2979 transitions. [2022-01-10 23:59:25,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2979 transitions. [2022-01-10 23:59:25,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:59:25,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:25,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:25,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:59:25,660 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:25,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:25,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1993124943, now seen corresponding path program 1 times [2022-01-10 23:59:25,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:25,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620209368] [2022-01-10 23:59:25,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:25,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:25,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:25,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620209368] [2022-01-10 23:59:25,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620209368] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:25,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:25,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:25,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119682078] [2022-01-10 23:59:25,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:25,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:25,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:25,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:25,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:25,732 INFO L87 Difference]: Start difference. First operand 1771 states and 2979 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:26,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:26,582 INFO L93 Difference]: Finished difference Result 10985 states and 18139 transitions. [2022-01-10 23:59:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:59:26,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 23:59:26,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:26,634 INFO L225 Difference]: With dead ends: 10985 [2022-01-10 23:59:26,634 INFO L226 Difference]: Without dead ends: 10270 [2022-01-10 23:59:26,638 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 23:59:26,638 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 4625 mSDsluCounter, 4653 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4625 SdHoareTripleChecker+Valid, 6345 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:26,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4625 Valid, 6345 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10270 states. [2022-01-10 23:59:26,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10270 to 3394. [2022-01-10 23:59:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3392 states have (on average 1.693691037735849) internal successors, (5745), 3393 states have internal predecessors, (5745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 5745 transitions. [2022-01-10 23:59:26,931 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 5745 transitions. Word has length 68 [2022-01-10 23:59:26,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:26,931 INFO L470 AbstractCegarLoop]: Abstraction has 3394 states and 5745 transitions. [2022-01-10 23:59:26,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:26,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 5745 transitions. [2022-01-10 23:59:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:59:26,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:26,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:26,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:59:26,935 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:26,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:26,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1340228336, now seen corresponding path program 1 times [2022-01-10 23:59:26,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:26,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026846373] [2022-01-10 23:59:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:26,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:27,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:27,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026846373] [2022-01-10 23:59:27,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026846373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:27,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:27,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:27,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21229487] [2022-01-10 23:59:27,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:27,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:59:27,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:27,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:59:27,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:59:27,049 INFO L87 Difference]: Start difference. First operand 3394 states and 5745 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:28,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:28,459 INFO L93 Difference]: Finished difference Result 13922 states and 22392 transitions. [2022-01-10 23:59:28,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:59:28,460 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 23:59:28,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:28,528 INFO L225 Difference]: With dead ends: 13922 [2022-01-10 23:59:28,528 INFO L226 Difference]: Without dead ends: 12672 [2022-01-10 23:59:28,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:59:28,532 INFO L933 BasicCegarLoop]: 1088 mSDtfsCounter, 6500 mSDsluCounter, 7199 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6500 SdHoareTripleChecker+Valid, 8287 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:28,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6500 Valid, 8287 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:59:28,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12672 states. [2022-01-10 23:59:29,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12672 to 6645. [2022-01-10 23:59:29,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6645 states, 6643 states have (on average 1.6993828089718501) internal successors, (11289), 6644 states have internal predecessors, (11289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6645 states to 6645 states and 11289 transitions. [2022-01-10 23:59:29,220 INFO L78 Accepts]: Start accepts. Automaton has 6645 states and 11289 transitions. Word has length 68 [2022-01-10 23:59:29,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:29,220 INFO L470 AbstractCegarLoop]: Abstraction has 6645 states and 11289 transitions. [2022-01-10 23:59:29,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:29,220 INFO L276 IsEmpty]: Start isEmpty. Operand 6645 states and 11289 transitions. [2022-01-10 23:59:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:59:29,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:29,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:29,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:59:29,227 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:29,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:29,228 INFO L85 PathProgramCache]: Analyzing trace with hash 138210082, now seen corresponding path program 1 times [2022-01-10 23:59:29,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:29,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195025929] [2022-01-10 23:59:29,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:29,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:29,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:29,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195025929] [2022-01-10 23:59:29,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195025929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:29,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:29,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:29,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482023813] [2022-01-10 23:59:29,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:29,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:59:29,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:29,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:59:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:59:29,322 INFO L87 Difference]: Start difference. First operand 6645 states and 11289 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:31,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:31,927 INFO L93 Difference]: Finished difference Result 25060 states and 40490 transitions. [2022-01-10 23:59:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:59:31,928 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 23:59:31,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:32,024 INFO L225 Difference]: With dead ends: 25060 [2022-01-10 23:59:32,024 INFO L226 Difference]: Without dead ends: 22621 [2022-01-10 23:59:32,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:59:32,038 INFO L933 BasicCegarLoop]: 948 mSDtfsCounter, 6490 mSDsluCounter, 6490 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6490 SdHoareTripleChecker+Valid, 7438 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:32,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6490 Valid, 7438 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:59:32,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22621 states. [2022-01-10 23:59:33,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22621 to 13164. [2022-01-10 23:59:33,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13164 states, 13162 states have (on average 1.7020969457529251) internal successors, (22403), 13163 states have internal predecessors, (22403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:33,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13164 states to 13164 states and 22403 transitions. [2022-01-10 23:59:33,244 INFO L78 Accepts]: Start accepts. Automaton has 13164 states and 22403 transitions. Word has length 69 [2022-01-10 23:59:33,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:33,244 INFO L470 AbstractCegarLoop]: Abstraction has 13164 states and 22403 transitions. [2022-01-10 23:59:33,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:33,244 INFO L276 IsEmpty]: Start isEmpty. Operand 13164 states and 22403 transitions. [2022-01-10 23:59:33,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:59:33,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:33,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:33,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:59:33,256 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:33,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:33,256 INFO L85 PathProgramCache]: Analyzing trace with hash -270614143, now seen corresponding path program 1 times [2022-01-10 23:59:33,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:33,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064743625] [2022-01-10 23:59:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:33,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:33,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:33,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064743625] [2022-01-10 23:59:33,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064743625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:33,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:33,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:33,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190695425] [2022-01-10 23:59:33,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:33,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:33,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:33,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:33,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:33,373 INFO L87 Difference]: Start difference. First operand 13164 states and 22403 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:36,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:36,364 INFO L93 Difference]: Finished difference Result 33730 states and 56533 transitions. [2022-01-10 23:59:36,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:59:36,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 23:59:36,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:36,417 INFO L225 Difference]: With dead ends: 33730 [2022-01-10 23:59:36,418 INFO L226 Difference]: Without dead ends: 31904 [2022-01-10 23:59:36,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:59:36,426 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 4450 mSDsluCounter, 5254 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4450 SdHoareTripleChecker+Valid, 6783 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:36,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4450 Valid, 6783 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:36,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31904 states. [2022-01-10 23:59:37,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31904 to 13311. [2022-01-10 23:59:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13311 states, 13309 states have (on average 1.699977458862424) internal successors, (22625), 13310 states have internal predecessors, (22625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13311 states to 13311 states and 22625 transitions. [2022-01-10 23:59:37,529 INFO L78 Accepts]: Start accepts. Automaton has 13311 states and 22625 transitions. Word has length 69 [2022-01-10 23:59:37,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:37,529 INFO L470 AbstractCegarLoop]: Abstraction has 13311 states and 22625 transitions. [2022-01-10 23:59:37,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:37,530 INFO L276 IsEmpty]: Start isEmpty. Operand 13311 states and 22625 transitions. [2022-01-10 23:59:37,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:59:37,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:37,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:37,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:59:37,557 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:37,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:37,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1103342, now seen corresponding path program 1 times [2022-01-10 23:59:37,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:37,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084267899] [2022-01-10 23:59:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:37,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:37,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:37,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084267899] [2022-01-10 23:59:37,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084267899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:37,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:37,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:37,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850320771] [2022-01-10 23:59:37,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:37,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:59:37,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:37,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:59:37,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:59:37,661 INFO L87 Difference]: Start difference. First operand 13311 states and 22625 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:41,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:41,282 INFO L93 Difference]: Finished difference Result 35719 states and 57080 transitions. [2022-01-10 23:59:41,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 23:59:41,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 23:59:41,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:41,330 INFO L225 Difference]: With dead ends: 35719 [2022-01-10 23:59:41,330 INFO L226 Difference]: Without dead ends: 31490 [2022-01-10 23:59:41,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2022-01-10 23:59:41,341 INFO L933 BasicCegarLoop]: 1423 mSDtfsCounter, 4602 mSDsluCounter, 5580 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4602 SdHoareTripleChecker+Valid, 7003 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:41,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4602 Valid, 7003 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:59:41,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31490 states. [2022-01-10 23:59:42,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31490 to 14867. [2022-01-10 23:59:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14867 states, 14865 states have (on average 1.6865792129162462) internal successors, (25071), 14866 states have internal predecessors, (25071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:42,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14867 states to 14867 states and 25071 transitions. [2022-01-10 23:59:42,710 INFO L78 Accepts]: Start accepts. Automaton has 14867 states and 25071 transitions. Word has length 69 [2022-01-10 23:59:42,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:42,710 INFO L470 AbstractCegarLoop]: Abstraction has 14867 states and 25071 transitions. [2022-01-10 23:59:42,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:42,711 INFO L276 IsEmpty]: Start isEmpty. Operand 14867 states and 25071 transitions. [2022-01-10 23:59:42,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:59:42,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:42,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:42,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:59:42,724 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:42,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash 511555156, now seen corresponding path program 1 times [2022-01-10 23:59:42,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:42,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500595685] [2022-01-10 23:59:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:42,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:42,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:42,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500595685] [2022-01-10 23:59:42,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500595685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:42,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:42,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:42,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114462885] [2022-01-10 23:59:42,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:42,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:59:42,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:42,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:59:42,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:59:42,791 INFO L87 Difference]: Start difference. First operand 14867 states and 25071 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:44,231 INFO L93 Difference]: Finished difference Result 17567 states and 29106 transitions. [2022-01-10 23:59:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:59:44,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 23:59:44,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:44,249 INFO L225 Difference]: With dead ends: 17567 [2022-01-10 23:59:44,249 INFO L226 Difference]: Without dead ends: 16036 [2022-01-10 23:59:44,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:44,253 INFO L933 BasicCegarLoop]: 849 mSDtfsCounter, 992 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 1940 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 23:59:44,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 1940 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:44,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16036 states. [2022-01-10 23:59:45,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16036 to 14867. [2022-01-10 23:59:45,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14867 states, 14865 states have (on average 1.686041035990582) internal successors, (25063), 14866 states have internal predecessors, (25063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:45,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14867 states to 14867 states and 25063 transitions. [2022-01-10 23:59:45,479 INFO L78 Accepts]: Start accepts. Automaton has 14867 states and 25063 transitions. Word has length 69 [2022-01-10 23:59:45,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:45,480 INFO L470 AbstractCegarLoop]: Abstraction has 14867 states and 25063 transitions. [2022-01-10 23:59:45,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:45,480 INFO L276 IsEmpty]: Start isEmpty. Operand 14867 states and 25063 transitions. [2022-01-10 23:59:45,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:59:45,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:45,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:45,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:59:45,493 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:45,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:45,493 INFO L85 PathProgramCache]: Analyzing trace with hash 522871283, now seen corresponding path program 1 times [2022-01-10 23:59:45,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:45,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264007079] [2022-01-10 23:59:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:45,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:45,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:45,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264007079] [2022-01-10 23:59:45,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264007079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:45,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:45,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:45,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111940650] [2022-01-10 23:59:45,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:45,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:45,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:45,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:45,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:45,635 INFO L87 Difference]: Start difference. First operand 14867 states and 25063 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:48,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:48,863 INFO L93 Difference]: Finished difference Result 31589 states and 50353 transitions. [2022-01-10 23:59:48,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:59:48,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 23:59:48,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:48,899 INFO L225 Difference]: With dead ends: 31589 [2022-01-10 23:59:48,899 INFO L226 Difference]: Without dead ends: 26234 [2022-01-10 23:59:48,911 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 23:59:48,911 INFO L933 BasicCegarLoop]: 1589 mSDtfsCounter, 1970 mSDsluCounter, 3308 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 4897 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:48,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1970 Valid, 4897 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26234 states. [2022-01-10 23:59:50,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26234 to 15523. [2022-01-10 23:59:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15523 states, 15521 states have (on average 1.6716062109400167) internal successors, (25945), 15522 states have internal predecessors, (25945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15523 states to 15523 states and 25945 transitions. [2022-01-10 23:59:50,372 INFO L78 Accepts]: Start accepts. Automaton has 15523 states and 25945 transitions. Word has length 69 [2022-01-10 23:59:50,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:50,373 INFO L470 AbstractCegarLoop]: Abstraction has 15523 states and 25945 transitions. [2022-01-10 23:59:50,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:50,373 INFO L276 IsEmpty]: Start isEmpty. Operand 15523 states and 25945 transitions. [2022-01-10 23:59:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:59:50,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:50,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:50,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:59:50,384 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:50,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:50,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1394450587, now seen corresponding path program 1 times [2022-01-10 23:59:50,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:50,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87921400] [2022-01-10 23:59:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:50,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:50,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:50,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87921400] [2022-01-10 23:59:50,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87921400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:50,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:50,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:50,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236080716] [2022-01-10 23:59:50,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:50,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:50,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:50,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:50,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:50,450 INFO L87 Difference]: Start difference. First operand 15523 states and 25945 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:54,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:54,773 INFO L93 Difference]: Finished difference Result 43127 states and 70993 transitions. [2022-01-10 23:59:54,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:59:54,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 23:59:54,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:54,826 INFO L225 Difference]: With dead ends: 43127 [2022-01-10 23:59:54,827 INFO L226 Difference]: Without dead ends: 40400 [2022-01-10 23:59:54,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:59:54,837 INFO L933 BasicCegarLoop]: 1488 mSDtfsCounter, 4405 mSDsluCounter, 4311 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4405 SdHoareTripleChecker+Valid, 5799 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:54,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4405 Valid, 5799 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:59:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40400 states. [2022-01-10 23:59:56,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40400 to 15908. [2022-01-10 23:59:56,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15908 states, 15906 states have (on average 1.670124481327801) internal successors, (26565), 15907 states have internal predecessors, (26565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15908 states to 15908 states and 26565 transitions. [2022-01-10 23:59:56,549 INFO L78 Accepts]: Start accepts. Automaton has 15908 states and 26565 transitions. Word has length 70 [2022-01-10 23:59:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:56,549 INFO L470 AbstractCegarLoop]: Abstraction has 15908 states and 26565 transitions. [2022-01-10 23:59:56,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:56,549 INFO L276 IsEmpty]: Start isEmpty. Operand 15908 states and 26565 transitions. [2022-01-10 23:59:56,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:59:56,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:56,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:56,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:59:56,560 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:56,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:56,560 INFO L85 PathProgramCache]: Analyzing trace with hash 830627295, now seen corresponding path program 1 times [2022-01-10 23:59:56,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:56,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875372568] [2022-01-10 23:59:56,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:56,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:56,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:56,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875372568] [2022-01-10 23:59:56,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875372568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:56,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:56,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:56,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599323216] [2022-01-10 23:59:56,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:56,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:56,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:56,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:56,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:56,617 INFO L87 Difference]: Start difference. First operand 15908 states and 26565 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:59,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:59,781 INFO L93 Difference]: Finished difference Result 47208 states and 78855 transitions. [2022-01-10 23:59:59,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:59:59,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 23:59:59,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:59,825 INFO L225 Difference]: With dead ends: 47208 [2022-01-10 23:59:59,825 INFO L226 Difference]: Without dead ends: 31366 [2022-01-10 23:59:59,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:59:59,843 INFO L933 BasicCegarLoop]: 1620 mSDtfsCounter, 2490 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2490 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:59,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2490 Valid, 2456 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31366 states. [2022-01-11 00:00:01,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31366 to 15908. [2022-01-11 00:00:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15908 states, 15906 states have (on average 1.6699987426128504) internal successors, (26563), 15907 states have internal predecessors, (26563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:01,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15908 states to 15908 states and 26563 transitions. [2022-01-11 00:00:01,651 INFO L78 Accepts]: Start accepts. Automaton has 15908 states and 26563 transitions. Word has length 70 [2022-01-11 00:00:01,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:01,652 INFO L470 AbstractCegarLoop]: Abstraction has 15908 states and 26563 transitions. [2022-01-11 00:00:01,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:01,652 INFO L276 IsEmpty]: Start isEmpty. Operand 15908 states and 26563 transitions. [2022-01-11 00:00:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 00:00:01,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:00:01,667 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] [2022-01-11 00:00:01,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:00:01,667 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:00:01,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:00:01,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1599797310, now seen corresponding path program 1 times [2022-01-11 00:00:01,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:00:01,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597409622] [2022-01-11 00:00:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:00:01,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:00:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:00:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:00:01,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:00:01,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597409622] [2022-01-11 00:00:01,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597409622] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:00:01,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:00:01,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:00:01,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069061094] [2022-01-11 00:00:01,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:00:01,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:00:01,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:00:01,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:00:01,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:00:01,740 INFO L87 Difference]: Start difference. First operand 15908 states and 26563 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:04,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:00:04,624 INFO L93 Difference]: Finished difference Result 30138 states and 48778 transitions. [2022-01-11 00:00:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:00:04,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-11 00:00:04,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:00:04,652 INFO L225 Difference]: With dead ends: 30138 [2022-01-11 00:00:04,652 INFO L226 Difference]: Without dead ends: 21830 [2022-01-11 00:00:04,662 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 [2022-01-11 00:00:04,663 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 2139 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2139 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:00:04,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2139 Valid, 2061 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:00:04,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21830 states. [2022-01-11 00:00:06,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21830 to 15878. [2022-01-11 00:00:06,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15878 states, 15876 states have (on average 1.6662257495590829) internal successors, (26453), 15877 states have internal predecessors, (26453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:06,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15878 states to 15878 states and 26453 transitions. [2022-01-11 00:00:06,710 INFO L78 Accepts]: Start accepts. Automaton has 15878 states and 26453 transitions. Word has length 70 [2022-01-11 00:00:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:06,710 INFO L470 AbstractCegarLoop]: Abstraction has 15878 states and 26453 transitions. [2022-01-11 00:00:06,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:06,710 INFO L276 IsEmpty]: Start isEmpty. Operand 15878 states and 26453 transitions. [2022-01-11 00:00:06,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 00:00:06,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:00:06,725 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] [2022-01-11 00:00:06,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:00:06,725 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:00:06,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:00:06,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1817165237, now seen corresponding path program 1 times [2022-01-11 00:00:06,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:00:06,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68444966] [2022-01-11 00:00:06,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:00:06,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:00:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:00:06,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:00:06,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:00:06,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68444966] [2022-01-11 00:00:06,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68444966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:00:06,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:00:06,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 00:00:06,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116904382] [2022-01-11 00:00:06,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:00:06,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 00:00:06,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:00:06,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 00:00:06,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 00:00:06,995 INFO L87 Difference]: Start difference. First operand 15878 states and 26453 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:09,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:00:09,731 INFO L93 Difference]: Finished difference Result 26180 states and 42250 transitions. [2022-01-11 00:00:09,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 00:00:09,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-11 00:00:09,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:00:09,763 INFO L225 Difference]: With dead ends: 26180 [2022-01-11 00:00:09,764 INFO L226 Difference]: Without dead ends: 18440 [2022-01-11 00:00:09,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2022-01-11 00:00:09,776 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 2408 mSDsluCounter, 3387 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2408 SdHoareTripleChecker+Valid, 4265 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:00:09,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2408 Valid, 4265 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:00:09,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18440 states. [2022-01-11 00:00:11,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18440 to 15754. [2022-01-11 00:00:11,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15754 states, 15752 states have (on average 1.6628364652107668) internal successors, (26193), 15753 states have internal predecessors, (26193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:11,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15754 states to 15754 states and 26193 transitions. [2022-01-11 00:00:11,635 INFO L78 Accepts]: Start accepts. Automaton has 15754 states and 26193 transitions. Word has length 70 [2022-01-11 00:00:11,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:11,635 INFO L470 AbstractCegarLoop]: Abstraction has 15754 states and 26193 transitions. [2022-01-11 00:00:11,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:11,635 INFO L276 IsEmpty]: Start isEmpty. Operand 15754 states and 26193 transitions. [2022-01-11 00:00:11,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 00:00:11,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:00:11,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:00:11,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:00:11,645 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:00:11,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:00:11,645 INFO L85 PathProgramCache]: Analyzing trace with hash 652703768, now seen corresponding path program 1 times [2022-01-11 00:00:11,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:00:11,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840292802] [2022-01-11 00:00:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:00:11,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:00:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:00:11,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:00:11,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:00:11,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840292802] [2022-01-11 00:00:11,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840292802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:00:11,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:00:11,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 00:00:11,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627119684] [2022-01-11 00:00:11,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:00:11,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 00:00:11,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:00:11,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 00:00:11,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 00:00:11,725 INFO L87 Difference]: Start difference. First operand 15754 states and 26193 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:15,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:00:15,646 INFO L93 Difference]: Finished difference Result 28597 states and 45916 transitions. [2022-01-11 00:00:15,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-11 00:00:15,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-11 00:00:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:00:15,683 INFO L225 Difference]: With dead ends: 28597 [2022-01-11 00:00:15,683 INFO L226 Difference]: Without dead ends: 23589 [2022-01-11 00:00:15,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-01-11 00:00:15,698 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 5290 mSDsluCounter, 3157 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5290 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:00:15,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5290 Valid, 4167 Invalid, 179 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:00:15,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23589 states. [2022-01-11 00:00:18,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23589 to 15724. [2022-01-11 00:00:18,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15724 states, 15722 states have (on average 1.6621931052029004) internal successors, (26133), 15723 states have internal predecessors, (26133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15724 states to 15724 states and 26133 transitions. [2022-01-11 00:00:18,558 INFO L78 Accepts]: Start accepts. Automaton has 15724 states and 26133 transitions. Word has length 71 [2022-01-11 00:00:18,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:18,560 INFO L470 AbstractCegarLoop]: Abstraction has 15724 states and 26133 transitions. [2022-01-11 00:00:18,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:18,560 INFO L276 IsEmpty]: Start isEmpty. Operand 15724 states and 26133 transitions. [2022-01-11 00:00:18,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 00:00:18,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:00:18,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:00:18,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:00:18,573 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:00:18,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:00:18,574 INFO L85 PathProgramCache]: Analyzing trace with hash 456190263, now seen corresponding path program 1 times [2022-01-11 00:00:18,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:00:18,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585255246] [2022-01-11 00:00:18,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:00:18,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:00:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:00:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:00:18,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:00:18,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585255246] [2022-01-11 00:00:18,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585255246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:00:18,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:00:18,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:00:18,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611454964] [2022-01-11 00:00:18,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:00:18,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:00:18,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:00:18,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:00:18,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:00:18,784 INFO L87 Difference]: Start difference. First operand 15724 states and 26133 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:29,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:00:29,281 INFO L93 Difference]: Finished difference Result 53184 states and 83117 transitions. [2022-01-11 00:00:29,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:00:29,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-11 00:00:29,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:00:29,358 INFO L225 Difference]: With dead ends: 53184 [2022-01-11 00:00:29,358 INFO L226 Difference]: Without dead ends: 48006 [2022-01-11 00:00:29,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:00:29,376 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 2683 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:00:29,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2683 Valid, 3649 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:00:29,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48006 states.