/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_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:03:39,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:03:39,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:03:39,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:03:39,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:03:39,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:03:39,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:03:39,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:03:39,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:03:39,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:03:39,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:03:39,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:03:39,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:03:39,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:03:39,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:03:39,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:03:39,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:03:39,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:03:39,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:03:39,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:03:39,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:03:39,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:03:39,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:03:39,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:03:39,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:03:39,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:03:39,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:03:39,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:03:39,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:03:39,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:03:39,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:03:39,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:03:39,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:03:39,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:03:39,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:03:39,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:03:39,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:03:39,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:03:39,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:03:39,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:03:39,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:03:39,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:03:39,337 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:03:39,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:03:39,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:03:39,338 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:03:39,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:03:39,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:03:39,339 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:03:39,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:03:39,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:03:39,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:03:39,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:03:39,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:03:39,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:03:39,341 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:03:39,341 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:03:39,341 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:03:39,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:03:39,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:03:39,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:03:39,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:03:39,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:03:39,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:03:39,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:03:39,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:03:39,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:03:39,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:03:39,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:03:39,343 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:03:39,343 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:03:39,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:03:39,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:03:39,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:03:39,345 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:03:39,345 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:03:39,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:03:39,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:03:39,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:03:39,602 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:03:39,608 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:03:39,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product23.cil.c [2022-01-10 18:03:39,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aed269850/1ab9a29c03ca4db78aa8a60737233f33/FLAG6d66342d8 [2022-01-10 18:03:40,118 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:03:40,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product23.cil.c [2022-01-10 18:03:40,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aed269850/1ab9a29c03ca4db78aa8a60737233f33/FLAG6d66342d8 [2022-01-10 18:03:40,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aed269850/1ab9a29c03ca4db78aa8a60737233f33 [2022-01-10 18:03:40,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:03:40,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:03:40,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:03:40,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:03:40,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:03:40,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:03:40" (1/1) ... [2022-01-10 18:03:40,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34907c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:40, skipping insertion in model container [2022-01-10 18:03:40,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:03:40" (1/1) ... [2022-01-10 18:03:40,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:03:40,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:03:40,915 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product23.cil.c[46731,46744] [2022-01-10 18:03:40,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:03:40,966 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:03:40,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:03:41,030 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product23.cil.c[46731,46744] [2022-01-10 18:03:41,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:03:41,064 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:03:41,117 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product23.cil.c[46731,46744] [2022-01-10 18:03:41,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:03:41,171 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:03:41,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:41 WrapperNode [2022-01-10 18:03:41,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:03:41,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:03:41,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:03:41,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:03:41,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:41" (1/1) ... [2022-01-10 18:03:41,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:41" (1/1) ... [2022-01-10 18:03:41,341 INFO L137 Inliner]: procedures = 132, calls = 219, calls flagged for inlining = 128, calls inlined = 262, statements flattened = 4117 [2022-01-10 18:03:41,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:03:41,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:03:41,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:03:41,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:03:41,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:41" (1/1) ... [2022-01-10 18:03:41,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:41" (1/1) ... [2022-01-10 18:03:41,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:41" (1/1) ... [2022-01-10 18:03:41,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:41" (1/1) ... [2022-01-10 18:03:41,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:41" (1/1) ... [2022-01-10 18:03:41,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:41" (1/1) ... [2022-01-10 18:03:41,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:41" (1/1) ... [2022-01-10 18:03:41,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:03:41,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:03:41,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:03:41,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:03:41,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:41" (1/1) ... [2022-01-10 18:03:41,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:03:41,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:03:41,538 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 18:03:41,550 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 18:03:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:03:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:03:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:03:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:03:41,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:03:41,798 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:03:41,800 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:03:43,247 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:03:43,256 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:03:43,257 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:03:43,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:03:43 BoogieIcfgContainer [2022-01-10 18:03:43,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:03:43,260 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:03:43,260 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:03:43,261 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:03:43,263 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:03:43" (1/1) ... [2022-01-10 18:03:43,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:03:43 BasicIcfg [2022-01-10 18:03:43,634 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:03:43,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:03:43,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:03:43,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:03:43,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:03:40" (1/4) ... [2022-01-10 18:03:43,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d876aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:03:43, skipping insertion in model container [2022-01-10 18:03:43,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:41" (2/4) ... [2022-01-10 18:03:43,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d876aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:03:43, skipping insertion in model container [2022-01-10 18:03:43,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:03:43" (3/4) ... [2022-01-10 18:03:43,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d876aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:03:43, skipping insertion in model container [2022-01-10 18:03:43,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:03:43" (4/4) ... [2022-01-10 18:03:43,641 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product23.cil.cTransformedIcfg [2022-01-10 18:03:43,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:03:43,645 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 18:03:43,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:03:43,695 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 18:03:43,695 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 18:03:43,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 930 states, 923 states have (on average 1.705308775731311) internal successors, (1574), 929 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states 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 18:03:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 18:03:43,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:43,739 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] [2022-01-10 18:03:43,740 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:43,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:43,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1982213469, now seen corresponding path program 1 times [2022-01-10 18:03:43,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:43,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917259006] [2022-01-10 18:03:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:43,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:44,118 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 18:03:44,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:44,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917259006] [2022-01-10 18:03:44,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917259006] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:44,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:44,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:03:44,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731646524] [2022-01-10 18:03:44,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:44,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:03:44,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:44,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:03:44,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:03:44,149 INFO L87 Difference]: Start difference. First operand has 930 states, 923 states have (on average 1.705308775731311) internal successors, (1574), 929 states have internal predecessors, (1574), 0 states have call successors, (0), 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 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 18:03:44,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:44,206 INFO L93 Difference]: Finished difference Result 1551 states and 2601 transitions. [2022-01-10 18:03:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:03:44,208 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-01-10 18:03:44,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:44,225 INFO L225 Difference]: With dead ends: 1551 [2022-01-10 18:03:44,225 INFO L226 Difference]: Without dead ends: 876 [2022-01-10 18:03:44,230 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 18:03:44,234 INFO L933 BasicCegarLoop]: 1560 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, 1560 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 18:03:44,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:44,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-01-10 18:03:44,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2022-01-10 18:03:44,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 870 states have (on average 1.7137931034482758) internal successors, (1491), 875 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states 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 18:03:44,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1491 transitions. [2022-01-10 18:03:44,351 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1491 transitions. Word has length 58 [2022-01-10 18:03:44,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:44,352 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1491 transitions. [2022-01-10 18:03:44,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 18:03:44,352 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1491 transitions. [2022-01-10 18:03:44,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 18:03:44,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:44,353 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 18:03:44,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:03:44,354 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:44,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:44,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1294549267, now seen corresponding path program 1 times [2022-01-10 18:03:44,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:44,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558070380] [2022-01-10 18:03:44,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:44,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:44,552 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 18:03:44,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:44,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558070380] [2022-01-10 18:03:44,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558070380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:44,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:44,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:03:44,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099021076] [2022-01-10 18:03:44,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:44,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:03:44,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:44,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:03:44,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:03:44,556 INFO L87 Difference]: Start difference. First operand 876 states and 1491 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 18:03:44,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:44,644 INFO L93 Difference]: Finished difference Result 1733 states and 2954 transitions. [2022-01-10 18:03:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:03:44,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 18:03:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:44,648 INFO L225 Difference]: With dead ends: 1733 [2022-01-10 18:03:44,648 INFO L226 Difference]: Without dead ends: 876 [2022-01-10 18:03:44,651 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 18:03:44,652 INFO L933 BasicCegarLoop]: 1470 mSDtfsCounter, 1466 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:44,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 1483 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:44,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-01-10 18:03:44,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2022-01-10 18:03:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 870 states have (on average 1.7114942528735633) internal successors, (1489), 875 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states 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 18:03:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1489 transitions. [2022-01-10 18:03:44,692 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1489 transitions. Word has length 59 [2022-01-10 18:03:44,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:44,694 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1489 transitions. [2022-01-10 18:03:44,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 18:03:44,697 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1489 transitions. [2022-01-10 18:03:44,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:03:44,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:44,707 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] [2022-01-10 18:03:44,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:03:44,707 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:44,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:44,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1859404525, now seen corresponding path program 1 times [2022-01-10 18:03:44,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:44,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993944833] [2022-01-10 18:03:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:44,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:44,863 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 18:03:44,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:44,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993944833] [2022-01-10 18:03:44,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993944833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:44,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:44,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:03:44,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721261924] [2022-01-10 18:03:44,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:44,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:03:44,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:44,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:03:44,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:03:44,867 INFO L87 Difference]: Start difference. First operand 876 states and 1489 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:45,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:45,252 INFO L93 Difference]: Finished difference Result 4248 states and 7241 transitions. [2022-01-10 18:03:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:03:45,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 18:03:45,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:45,266 INFO L225 Difference]: With dead ends: 4248 [2022-01-10 18:03:45,267 INFO L226 Difference]: Without dead ends: 3396 [2022-01-10 18:03:45,272 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 18:03:45,274 INFO L933 BasicCegarLoop]: 2901 mSDtfsCounter, 7228 mSDsluCounter, 4339 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7228 SdHoareTripleChecker+Valid, 7240 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 18:03:45,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7228 Valid, 7240 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:45,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3396 states. [2022-01-10 18:03:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3396 to 876. [2022-01-10 18:03:45,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 870 states have (on average 1.710344827586207) internal successors, (1488), 875 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states 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 18:03:45,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1488 transitions. [2022-01-10 18:03:45,336 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1488 transitions. Word has length 61 [2022-01-10 18:03:45,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:45,336 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1488 transitions. [2022-01-10 18:03:45,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:45,337 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1488 transitions. [2022-01-10 18:03:45,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:03:45,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:45,338 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 18:03:45,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:03:45,338 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:45,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:45,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1080903817, now seen corresponding path program 1 times [2022-01-10 18:03:45,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:45,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490408975] [2022-01-10 18:03:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:45,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:45,425 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 18:03:45,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:45,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490408975] [2022-01-10 18:03:45,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490408975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:45,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:45,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:03:45,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126797542] [2022-01-10 18:03:45,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:45,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:03:45,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:45,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:03:45,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:03:45,427 INFO L87 Difference]: Start difference. First operand 876 states and 1488 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 18:03:45,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:45,490 INFO L93 Difference]: Finished difference Result 1737 states and 2954 transitions. [2022-01-10 18:03:45,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:03:45,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 18:03:45,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:45,494 INFO L225 Difference]: With dead ends: 1737 [2022-01-10 18:03:45,494 INFO L226 Difference]: Without dead ends: 890 [2022-01-10 18:03:45,495 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 18:03:45,496 INFO L933 BasicCegarLoop]: 1502 mSDtfsCounter, 1467 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 1524 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 18:03:45,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 1524 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:45,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-01-10 18:03:45,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 876. [2022-01-10 18:03:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 870 states have (on average 1.7091954022988505) internal successors, (1487), 875 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states 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 18:03:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1487 transitions. [2022-01-10 18:03:45,560 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1487 transitions. Word has length 62 [2022-01-10 18:03:45,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:45,561 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1487 transitions. [2022-01-10 18:03:45,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 18:03:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1487 transitions. [2022-01-10 18:03:45,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:03:45,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:45,562 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 18:03:45,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:03:45,562 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:45,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash -407388722, now seen corresponding path program 1 times [2022-01-10 18:03:45,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:45,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027419190] [2022-01-10 18:03:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:45,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:03:45,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:45,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027419190] [2022-01-10 18:03:45,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027419190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:45,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:45,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:03:45,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328404044] [2022-01-10 18:03:45,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:45,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:03:45,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:45,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:03:45,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:03:45,639 INFO L87 Difference]: Start difference. First operand 876 states and 1487 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 18:03:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:45,831 INFO L93 Difference]: Finished difference Result 2562 states and 4361 transitions. [2022-01-10 18:03:45,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:03:45,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 18:03:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:45,837 INFO L225 Difference]: With dead ends: 2562 [2022-01-10 18:03:45,837 INFO L226 Difference]: Without dead ends: 1720 [2022-01-10 18:03:45,839 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 18:03:45,841 INFO L933 BasicCegarLoop]: 1496 mSDtfsCounter, 7151 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7151 SdHoareTripleChecker+Valid, 3006 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 18:03:45,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7151 Valid, 3006 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:45,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2022-01-10 18:03:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 876. [2022-01-10 18:03:45,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 870 states have (on average 1.706896551724138) internal successors, (1485), 875 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states 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 18:03:45,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1485 transitions. [2022-01-10 18:03:45,897 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1485 transitions. Word has length 63 [2022-01-10 18:03:45,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:45,897 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1485 transitions. [2022-01-10 18:03:45,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 18:03:45,898 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1485 transitions. [2022-01-10 18:03:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:03:45,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:45,898 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] [2022-01-10 18:03:45,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:03:45,899 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:45,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:45,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1171617173, now seen corresponding path program 1 times [2022-01-10 18:03:45,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:45,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285851411] [2022-01-10 18:03:45,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:45,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:46,033 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 18:03:46,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:46,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285851411] [2022-01-10 18:03:46,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285851411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:46,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:46,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:03:46,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506837526] [2022-01-10 18:03:46,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:46,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:03:46,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:46,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:03:46,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:03:46,035 INFO L87 Difference]: Start difference. First operand 876 states and 1485 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 18:03:46,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:46,425 INFO L93 Difference]: Finished difference Result 5054 states and 8550 transitions. [2022-01-10 18:03:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:03:46,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 18:03:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:46,440 INFO L225 Difference]: With dead ends: 5054 [2022-01-10 18:03:46,441 INFO L226 Difference]: Without dead ends: 4500 [2022-01-10 18:03:46,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 18:03:46,446 INFO L933 BasicCegarLoop]: 2789 mSDtfsCounter, 9084 mSDsluCounter, 8981 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9084 SdHoareTripleChecker+Valid, 11770 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:46,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9084 Valid, 11770 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:46,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2022-01-10 18:03:46,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 1478. [2022-01-10 18:03:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1472 states have (on average 1.7092391304347827) internal successors, (2516), 1477 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states 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 18:03:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2516 transitions. [2022-01-10 18:03:46,571 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2516 transitions. Word has length 65 [2022-01-10 18:03:46,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:46,574 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 2516 transitions. [2022-01-10 18:03:46,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 18:03:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2516 transitions. [2022-01-10 18:03:46,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:03:46,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:46,575 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 18:03:46,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:03:46,576 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:46,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:46,576 INFO L85 PathProgramCache]: Analyzing trace with hash -190711304, now seen corresponding path program 1 times [2022-01-10 18:03:46,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:46,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847216353] [2022-01-10 18:03:46,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:46,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:46,670 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 18:03:46,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:46,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847216353] [2022-01-10 18:03:46,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847216353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:46,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:46,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:03:46,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441952820] [2022-01-10 18:03:46,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:46,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:03:46,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:46,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:03:46,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:03:46,671 INFO L87 Difference]: Start difference. First operand 1478 states and 2516 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 18:03:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:46,824 INFO L93 Difference]: Finished difference Result 2596 states and 4381 transitions. [2022-01-10 18:03:46,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:03:46,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 18:03:46,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:46,832 INFO L225 Difference]: With dead ends: 2596 [2022-01-10 18:03:46,832 INFO L226 Difference]: Without dead ends: 1734 [2022-01-10 18:03:46,835 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 18:03:46,835 INFO L933 BasicCegarLoop]: 1467 mSDtfsCounter, 4193 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4193 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:46,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4193 Valid, 2952 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2022-01-10 18:03:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1478. [2022-01-10 18:03:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1472 states have (on average 1.7065217391304348) internal successors, (2512), 1477 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states 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 18:03:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2512 transitions. [2022-01-10 18:03:46,959 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2512 transitions. Word has length 66 [2022-01-10 18:03:46,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:46,959 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 2512 transitions. [2022-01-10 18:03:46,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 18:03:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2512 transitions. [2022-01-10 18:03:46,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:03:46,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:46,961 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 18:03:46,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:03:46,961 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:46,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash 741161795, now seen corresponding path program 1 times [2022-01-10 18:03:46,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:46,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606018975] [2022-01-10 18:03:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:46,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:47,025 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 18:03:47,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:47,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606018975] [2022-01-10 18:03:47,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606018975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:47,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:47,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:03:47,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3333455] [2022-01-10 18:03:47,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:47,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:03:47,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:47,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:03:47,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:03:47,027 INFO L87 Difference]: Start difference. First operand 1478 states and 2512 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 18:03:47,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:47,276 INFO L93 Difference]: Finished difference Result 4311 states and 7365 transitions. [2022-01-10 18:03:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:03:47,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 18:03:47,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:47,286 INFO L225 Difference]: With dead ends: 4311 [2022-01-10 18:03:47,286 INFO L226 Difference]: Without dead ends: 2870 [2022-01-10 18:03:47,289 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 18:03:47,289 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 4386 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4386 SdHoareTripleChecker+Valid, 4305 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:47,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4386 Valid, 4305 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:47,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2022-01-10 18:03:47,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1478. [2022-01-10 18:03:47,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1472 states have (on average 1.705163043478261) internal successors, (2510), 1477 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states 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 18:03:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2510 transitions. [2022-01-10 18:03:47,408 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2510 transitions. Word has length 66 [2022-01-10 18:03:47,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:47,408 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 2510 transitions. [2022-01-10 18:03:47,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 18:03:47,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2510 transitions. [2022-01-10 18:03:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:03:47,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:47,410 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 18:03:47,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:03:47,410 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:47,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:47,410 INFO L85 PathProgramCache]: Analyzing trace with hash 772995703, now seen corresponding path program 1 times [2022-01-10 18:03:47,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:47,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854918559] [2022-01-10 18:03:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:47,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:47,488 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 18:03:47,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:47,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854918559] [2022-01-10 18:03:47,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854918559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:47,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:47,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:03:47,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547296355] [2022-01-10 18:03:47,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:47,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:03:47,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:47,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:03:47,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:03:47,489 INFO L87 Difference]: Start difference. First operand 1478 states and 2510 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:47,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:47,593 INFO L93 Difference]: Finished difference Result 2108 states and 3542 transitions. [2022-01-10 18:03:47,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:03:47,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:03:47,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:47,599 INFO L225 Difference]: With dead ends: 2108 [2022-01-10 18:03:47,599 INFO L226 Difference]: Without dead ends: 1478 [2022-01-10 18:03:47,600 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 18:03:47,600 INFO L933 BasicCegarLoop]: 1463 mSDtfsCounter, 1658 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:47,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1658 Valid, 2737 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:47,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2022-01-10 18:03:47,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1478. [2022-01-10 18:03:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1472 states have (on average 1.6990489130434783) internal successors, (2501), 1477 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states 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 18:03:47,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2501 transitions. [2022-01-10 18:03:47,679 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2501 transitions. Word has length 67 [2022-01-10 18:03:47,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:47,679 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 2501 transitions. [2022-01-10 18:03:47,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2501 transitions. [2022-01-10 18:03:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:03:47,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:47,681 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 18:03:47,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:03:47,681 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:47,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:47,681 INFO L85 PathProgramCache]: Analyzing trace with hash -826643681, now seen corresponding path program 1 times [2022-01-10 18:03:47,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:47,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307268144] [2022-01-10 18:03:47,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:47,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:47,832 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 18:03:47,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:47,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307268144] [2022-01-10 18:03:47,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307268144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:47,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:47,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 18:03:47,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612924994] [2022-01-10 18:03:47,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:47,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:03:47,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:47,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:03:47,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:03:47,834 INFO L87 Difference]: Start difference. First operand 1478 states and 2501 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 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 18:03:49,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:49,662 INFO L93 Difference]: Finished difference Result 7563 states and 12227 transitions. [2022-01-10 18:03:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-10 18:03:49,663 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 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 18:03:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:49,689 INFO L225 Difference]: With dead ends: 7563 [2022-01-10 18:03:49,690 INFO L226 Difference]: Without dead ends: 6993 [2022-01-10 18:03:49,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=537, Invalid=1533, Unknown=0, NotChecked=0, Total=2070 [2022-01-10 18:03:49,693 INFO L933 BasicCegarLoop]: 3182 mSDtfsCounter, 13960 mSDsluCounter, 17431 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13960 SdHoareTripleChecker+Valid, 20613 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:49,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13960 Valid, 20613 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 18:03:49,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6993 states. [2022-01-10 18:03:49,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6993 to 2605. [2022-01-10 18:03:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2599 states have (on average 1.6806464024624856) internal successors, (4368), 2604 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states 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 18:03:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 4368 transitions. [2022-01-10 18:03:49,940 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 4368 transitions. Word has length 70 [2022-01-10 18:03:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:49,940 INFO L470 AbstractCegarLoop]: Abstraction has 2605 states and 4368 transitions. [2022-01-10 18:03:49,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 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 18:03:49,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 4368 transitions. [2022-01-10 18:03:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:03:49,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:49,943 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] [2022-01-10 18:03:49,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:03:49,944 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:49,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1297167148, now seen corresponding path program 1 times [2022-01-10 18:03:49,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:49,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802598523] [2022-01-10 18:03:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:49,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:50,076 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 18:03:50,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:50,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802598523] [2022-01-10 18:03:50,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802598523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:50,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:50,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:03:50,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723700704] [2022-01-10 18:03:50,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:50,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:03:50,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:03:50,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:03:50,078 INFO L87 Difference]: Start difference. First operand 2605 states and 4368 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) [2022-01-10 18:03:50,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:50,453 INFO L93 Difference]: Finished difference Result 4697 states and 7838 transitions. [2022-01-10 18:03:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:03:50,453 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 [2022-01-10 18:03:50,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:50,459 INFO L225 Difference]: With dead ends: 4697 [2022-01-10 18:03:50,459 INFO L226 Difference]: Without dead ends: 2906 [2022-01-10 18:03:50,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2022-01-10 18:03:50,462 INFO L933 BasicCegarLoop]: 1447 mSDtfsCounter, 4965 mSDsluCounter, 4919 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 6366 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:50,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4965 Valid, 6366 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:50,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2022-01-10 18:03:50,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2605. [2022-01-10 18:03:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2599 states have (on average 1.6744901885340515) internal successors, (4352), 2604 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states 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 18:03:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 4352 transitions. [2022-01-10 18:03:50,630 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 4352 transitions. Word has length 71 [2022-01-10 18:03:50,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:50,630 INFO L470 AbstractCegarLoop]: Abstraction has 2605 states and 4352 transitions. [2022-01-10 18:03:50,630 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) [2022-01-10 18:03:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 4352 transitions. [2022-01-10 18:03:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:03:50,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:50,632 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] [2022-01-10 18:03:50,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:03:50,633 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:50,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:50,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2000727795, now seen corresponding path program 1 times [2022-01-10 18:03:50,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:50,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091073860] [2022-01-10 18:03:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:50,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:50,748 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 18:03:50,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:50,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091073860] [2022-01-10 18:03:50,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091073860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:50,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:50,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:03:50,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444025691] [2022-01-10 18:03:50,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:50,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:03:50,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:50,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:03:50,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:03:50,749 INFO L87 Difference]: Start difference. First operand 2605 states and 4352 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) [2022-01-10 18:03:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:51,663 INFO L93 Difference]: Finished difference Result 9431 states and 15354 transitions. [2022-01-10 18:03:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:03:51,664 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 [2022-01-10 18:03:51,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:51,679 INFO L225 Difference]: With dead ends: 9431 [2022-01-10 18:03:51,679 INFO L226 Difference]: Without dead ends: 8090 [2022-01-10 18:03:51,682 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 18:03:51,682 INFO L933 BasicCegarLoop]: 1461 mSDtfsCounter, 5091 mSDsluCounter, 4136 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5091 SdHoareTripleChecker+Valid, 5597 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:51,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5091 Valid, 5597 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:51,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8090 states. [2022-01-10 18:03:52,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8090 to 3998. [2022-01-10 18:03:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3998 states, 3992 states have (on average 1.6508016032064128) internal successors, (6590), 3997 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states 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 18:03:52,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6590 transitions. [2022-01-10 18:03:52,126 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6590 transitions. Word has length 71 [2022-01-10 18:03:52,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:52,126 INFO L470 AbstractCegarLoop]: Abstraction has 3998 states and 6590 transitions. [2022-01-10 18:03:52,126 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2022-01-10 18:03:52,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6590 transitions. [2022-01-10 18:03:52,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:03:52,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:52,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:03:52,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:03:52,130 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:52,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:52,130 INFO L85 PathProgramCache]: Analyzing trace with hash -874606717, now seen corresponding path program 1 times [2022-01-10 18:03:52,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:52,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004888544] [2022-01-10 18:03:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:52,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:52,290 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 18:03:52,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:52,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004888544] [2022-01-10 18:03:52,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004888544] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:52,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:52,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 18:03:52,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248890303] [2022-01-10 18:03:52,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:52,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 18:03:52,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:52,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 18:03:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-10 18:03:52,291 INFO L87 Difference]: Start difference. First operand 3998 states and 6590 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:52,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:52,919 INFO L93 Difference]: Finished difference Result 6834 states and 11180 transitions. [2022-01-10 18:03:52,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 18:03:52,920 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 18:03:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:52,927 INFO L225 Difference]: With dead ends: 6834 [2022-01-10 18:03:52,927 INFO L226 Difference]: Without dead ends: 4172 [2022-01-10 18:03:52,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2022-01-10 18:03:52,931 INFO L933 BasicCegarLoop]: 1506 mSDtfsCounter, 5248 mSDsluCounter, 8233 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5248 SdHoareTripleChecker+Valid, 9739 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:52,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5248 Valid, 9739 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:52,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2022-01-10 18:03:53,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3734. [2022-01-10 18:03:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3728 states have (on average 1.6373390557939915) internal successors, (6104), 3733 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states 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 18:03:53,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 6104 transitions. [2022-01-10 18:03:53,262 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 6104 transitions. Word has length 72 [2022-01-10 18:03:53,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:53,262 INFO L470 AbstractCegarLoop]: Abstraction has 3734 states and 6104 transitions. [2022-01-10 18:03:53,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:53,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 6104 transitions. [2022-01-10 18:03:53,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:03:53,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:53,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:03:53,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:03:53,266 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:53,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:53,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1200556976, now seen corresponding path program 1 times [2022-01-10 18:03:53,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:53,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865384262] [2022-01-10 18:03:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:53,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:53,363 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 18:03:53,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:53,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865384262] [2022-01-10 18:03:53,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865384262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:53,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:53,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:03:53,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344568323] [2022-01-10 18:03:53,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:53,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:03:53,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:53,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:03:53,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:03:53,365 INFO L87 Difference]: Start difference. First operand 3734 states and 6104 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:54,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:54,987 INFO L93 Difference]: Finished difference Result 14822 states and 23548 transitions. [2022-01-10 18:03:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:03:54,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 18:03:54,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:55,012 INFO L225 Difference]: With dead ends: 14822 [2022-01-10 18:03:55,012 INFO L226 Difference]: Without dead ends: 12008 [2022-01-10 18:03:55,021 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 18:03:55,023 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 4543 mSDsluCounter, 4317 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4543 SdHoareTripleChecker+Valid, 5807 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:55,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4543 Valid, 5807 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:55,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12008 states. [2022-01-10 18:03:55,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12008 to 6636. [2022-01-10 18:03:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6636 states, 6630 states have (on average 1.6153846153846154) internal successors, (10710), 6635 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states 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 18:03:55,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6636 states to 6636 states and 10710 transitions. [2022-01-10 18:03:55,701 INFO L78 Accepts]: Start accepts. Automaton has 6636 states and 10710 transitions. Word has length 85 [2022-01-10 18:03:55,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:55,701 INFO L470 AbstractCegarLoop]: Abstraction has 6636 states and 10710 transitions. [2022-01-10 18:03:55,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:55,702 INFO L276 IsEmpty]: Start isEmpty. Operand 6636 states and 10710 transitions. [2022-01-10 18:03:55,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 18:03:55,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:55,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:03:55,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:03:55,706 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:55,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:55,707 INFO L85 PathProgramCache]: Analyzing trace with hash -515101497, now seen corresponding path program 1 times [2022-01-10 18:03:55,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:55,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099792618] [2022-01-10 18:03:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:55,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:55,810 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 18:03:55,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:55,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099792618] [2022-01-10 18:03:55,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099792618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:55,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:55,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:03:55,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011068045] [2022-01-10 18:03:55,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:55,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:03:55,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:55,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:03:55,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:03:55,812 INFO L87 Difference]: Start difference. First operand 6636 states and 10710 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 18:03:57,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:57,869 INFO L93 Difference]: Finished difference Result 21062 states and 33333 transitions. [2022-01-10 18:03:57,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:03:57,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-10 18:03:57,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:57,900 INFO L225 Difference]: With dead ends: 21062 [2022-01-10 18:03:57,901 INFO L226 Difference]: Without dead ends: 15654 [2022-01-10 18:03:57,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:03:57,912 INFO L933 BasicCegarLoop]: 1924 mSDtfsCounter, 3709 mSDsluCounter, 4279 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3709 SdHoareTripleChecker+Valid, 6203 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:57,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3709 Valid, 6203 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:57,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15654 states. [2022-01-10 18:03:58,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15654 to 8340. [2022-01-10 18:03:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8340 states, 8334 states have (on average 1.6094312455003599) internal successors, (13413), 8339 states have internal predecessors, (13413), 0 states have call successors, (0), 0 states 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 18:03:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8340 states to 8340 states and 13413 transitions. [2022-01-10 18:03:58,932 INFO L78 Accepts]: Start accepts. Automaton has 8340 states and 13413 transitions. Word has length 86 [2022-01-10 18:03:58,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:58,932 INFO L470 AbstractCegarLoop]: Abstraction has 8340 states and 13413 transitions. [2022-01-10 18:03:58,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 18:03:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 8340 states and 13413 transitions. [2022-01-10 18:03:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 18:03:58,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:58,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:03:58,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:03:58,941 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:03:58,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:58,942 INFO L85 PathProgramCache]: Analyzing trace with hash -2138071407, now seen corresponding path program 1 times [2022-01-10 18:03:58,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:58,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558215813] [2022-01-10 18:03:58,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:58,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:59,052 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 18:03:59,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:59,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558215813] [2022-01-10 18:03:59,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558215813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:59,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:59,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:03:59,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073547554] [2022-01-10 18:03:59,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:59,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:03:59,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:59,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:03:59,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:03:59,056 INFO L87 Difference]: Start difference. First operand 8340 states and 13413 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:04:02,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:02,172 INFO L93 Difference]: Finished difference Result 26965 states and 42722 transitions. [2022-01-10 18:04:02,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:04:02,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 18:04:02,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:02,209 INFO L225 Difference]: With dead ends: 26965 [2022-01-10 18:04:02,209 INFO L226 Difference]: Without dead ends: 21213 [2022-01-10 18:04:02,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 18:04:02,218 INFO L933 BasicCegarLoop]: 2946 mSDtfsCounter, 2204 mSDsluCounter, 5715 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 8661 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:02,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2204 Valid, 8661 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:04:02,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21213 states. [2022-01-10 18:04:03,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21213 to 8712. [2022-01-10 18:04:03,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8712 states, 8706 states have (on average 1.5847691247415576) internal successors, (13797), 8711 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states 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 18:04:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8712 states to 8712 states and 13797 transitions. [2022-01-10 18:04:03,270 INFO L78 Accepts]: Start accepts. Automaton has 8712 states and 13797 transitions. Word has length 87 [2022-01-10 18:04:03,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:03,271 INFO L470 AbstractCegarLoop]: Abstraction has 8712 states and 13797 transitions. [2022-01-10 18:04:03,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:04:03,271 INFO L276 IsEmpty]: Start isEmpty. Operand 8712 states and 13797 transitions. [2022-01-10 18:04:03,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 18:04:03,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:03,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:03,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:04:03,277 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:03,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:03,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1425585091, now seen corresponding path program 1 times [2022-01-10 18:04:03,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:03,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722399766] [2022-01-10 18:04:03,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:03,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:03,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:03,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722399766] [2022-01-10 18:04:03,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722399766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:03,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:03,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:04:03,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364182381] [2022-01-10 18:04:03,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:03,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:04:03,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:03,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:04:03,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:04:03,396 INFO L87 Difference]: Start difference. First operand 8712 states and 13797 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:04:07,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:07,326 INFO L93 Difference]: Finished difference Result 29286 states and 45660 transitions. [2022-01-10 18:04:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-10 18:04:07,330 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 18:04:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:07,374 INFO L225 Difference]: With dead ends: 29286 [2022-01-10 18:04:07,374 INFO L226 Difference]: Without dead ends: 23838 [2022-01-10 18:04:07,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=336, Invalid=854, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 18:04:07,387 INFO L933 BasicCegarLoop]: 2852 mSDtfsCounter, 10808 mSDsluCounter, 13567 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10808 SdHoareTripleChecker+Valid, 16419 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:07,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10808 Valid, 16419 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 18:04:07,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23838 states. [2022-01-10 18:04:08,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23838 to 8660. [2022-01-10 18:04:08,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8660 states, 8654 states have (on average 1.5792697018719668) internal successors, (13667), 8659 states have internal predecessors, (13667), 0 states have call successors, (0), 0 states 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 18:04:08,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 13667 transitions. [2022-01-10 18:04:08,557 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 13667 transitions. Word has length 87 [2022-01-10 18:04:08,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:08,557 INFO L470 AbstractCegarLoop]: Abstraction has 8660 states and 13667 transitions. [2022-01-10 18:04:08,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:04:08,557 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 13667 transitions. [2022-01-10 18:04:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 18:04:08,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:08,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:08,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:04:08,576 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:08,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash -644007712, now seen corresponding path program 1 times [2022-01-10 18:04:08,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:08,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378354049] [2022-01-10 18:04:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:08,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:08,696 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 18:04:08,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:08,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378354049] [2022-01-10 18:04:08,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378354049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:08,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:08,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:04:08,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326158794] [2022-01-10 18:04:08,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:08,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:04:08,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:08,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:04:08,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:04:08,698 INFO L87 Difference]: Start difference. First operand 8660 states and 13667 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:04:10,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:10,509 INFO L93 Difference]: Finished difference Result 16044 states and 25139 transitions. [2022-01-10 18:04:10,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:04:10,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 18:04:10,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:10,527 INFO L225 Difference]: With dead ends: 16044 [2022-01-10 18:04:10,528 INFO L226 Difference]: Without dead ends: 12201 [2022-01-10 18:04:10,535 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 18:04:10,535 INFO L933 BasicCegarLoop]: 1460 mSDtfsCounter, 2536 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2536 SdHoareTripleChecker+Valid, 3234 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:10,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2536 Valid, 3234 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:04:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12201 states. [2022-01-10 18:04:11,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12201 to 8660. [2022-01-10 18:04:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8660 states, 8654 states have (on average 1.5790385948694245) internal successors, (13665), 8659 states have internal predecessors, (13665), 0 states have call successors, (0), 0 states 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 18:04:11,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 13665 transitions. [2022-01-10 18:04:11,541 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 13665 transitions. Word has length 87 [2022-01-10 18:04:11,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:11,542 INFO L470 AbstractCegarLoop]: Abstraction has 8660 states and 13665 transitions. [2022-01-10 18:04:11,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:04:11,542 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 13665 transitions. [2022-01-10 18:04:11,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 18:04:11,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:11,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:11,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:04:11,546 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:11,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:11,547 INFO L85 PathProgramCache]: Analyzing trace with hash -884547841, now seen corresponding path program 1 times [2022-01-10 18:04:11,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:11,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376287175] [2022-01-10 18:04:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:11,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:11,623 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 18:04:11,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:11,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376287175] [2022-01-10 18:04:11,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376287175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:11,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:11,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:11,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398321431] [2022-01-10 18:04:11,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:11,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:04:11,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:11,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:04:11,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:04:11,624 INFO L87 Difference]: Start difference. First operand 8660 states and 13665 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:04:15,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:15,838 INFO L93 Difference]: Finished difference Result 30287 states and 47385 transitions. [2022-01-10 18:04:15,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:04:15,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 18:04:15,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:15,873 INFO L225 Difference]: With dead ends: 30287 [2022-01-10 18:04:15,873 INFO L226 Difference]: Without dead ends: 27383 [2022-01-10 18:04:15,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-01-10 18:04:15,880 INFO L933 BasicCegarLoop]: 4108 mSDtfsCounter, 3894 mSDsluCounter, 9897 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3894 SdHoareTripleChecker+Valid, 14005 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:15,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3894 Valid, 14005 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:04:15,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27383 states. [2022-01-10 18:04:17,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27383 to 11036. [2022-01-10 18:04:17,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11036 states, 11030 states have (on average 1.571532184950136) internal successors, (17334), 11035 states have internal predecessors, (17334), 0 states have call successors, (0), 0 states 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 18:04:17,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11036 states to 11036 states and 17334 transitions. [2022-01-10 18:04:17,341 INFO L78 Accepts]: Start accepts. Automaton has 11036 states and 17334 transitions. Word has length 87 [2022-01-10 18:04:17,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:17,342 INFO L470 AbstractCegarLoop]: Abstraction has 11036 states and 17334 transitions. [2022-01-10 18:04:17,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:04:17,342 INFO L276 IsEmpty]: Start isEmpty. Operand 11036 states and 17334 transitions. [2022-01-10 18:04:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 18:04:17,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:17,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:17,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:04:17,363 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:17,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:17,365 INFO L85 PathProgramCache]: Analyzing trace with hash 199723904, now seen corresponding path program 1 times [2022-01-10 18:04:17,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:17,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890808040] [2022-01-10 18:04:17,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:17,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:17,476 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 18:04:17,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:17,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890808040] [2022-01-10 18:04:17,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890808040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:17,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:17,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:04:17,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839314412] [2022-01-10 18:04:17,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:17,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:04:17,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:17,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:04:17,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:04:17,478 INFO L87 Difference]: Start difference. First operand 11036 states and 17334 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:04:20,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:20,903 INFO L93 Difference]: Finished difference Result 28638 states and 44542 transitions. [2022-01-10 18:04:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:04:20,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 18:04:20,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:20,933 INFO L225 Difference]: With dead ends: 28638 [2022-01-10 18:04:20,933 INFO L226 Difference]: Without dead ends: 20496 [2022-01-10 18:04:20,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:20,941 INFO L933 BasicCegarLoop]: 2514 mSDtfsCounter, 1116 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 6091 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:20,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 6091 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:04:20,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20496 states. [2022-01-10 18:04:22,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20496 to 9741. [2022-01-10 18:04:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9741 states, 9735 states have (on average 1.5589111453518234) internal successors, (15176), 9740 states have internal predecessors, (15176), 0 states have call successors, (0), 0 states 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 18:04:22,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9741 states to 9741 states and 15176 transitions. [2022-01-10 18:04:22,307 INFO L78 Accepts]: Start accepts. Automaton has 9741 states and 15176 transitions. Word has length 88 [2022-01-10 18:04:22,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:22,307 INFO L470 AbstractCegarLoop]: Abstraction has 9741 states and 15176 transitions. [2022-01-10 18:04:22,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:04:22,308 INFO L276 IsEmpty]: Start isEmpty. Operand 9741 states and 15176 transitions. [2022-01-10 18:04:22,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 18:04:22,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:22,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:22,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:04:22,312 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:22,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:22,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2003215716, now seen corresponding path program 1 times [2022-01-10 18:04:22,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:22,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282253525] [2022-01-10 18:04:22,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:22,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:22,424 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 18:04:22,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:22,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282253525] [2022-01-10 18:04:22,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282253525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:22,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:22,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:04:22,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881831978] [2022-01-10 18:04:22,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:22,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:04:22,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:22,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:04:22,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:04:22,425 INFO L87 Difference]: Start difference. First operand 9741 states and 15176 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:04:43,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:43,420 INFO L93 Difference]: Finished difference Result 116838 states and 178383 transitions. [2022-01-10 18:04:43,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-10 18:04:43,421 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 18:04:43,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:43,637 INFO L225 Difference]: With dead ends: 116838 [2022-01-10 18:04:43,638 INFO L226 Difference]: Without dead ends: 110648 [2022-01-10 18:04:43,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=526, Invalid=1366, Unknown=0, NotChecked=0, Total=1892 [2022-01-10 18:04:43,684 INFO L933 BasicCegarLoop]: 1918 mSDtfsCounter, 22288 mSDsluCounter, 17444 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22288 SdHoareTripleChecker+Valid, 19362 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:43,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22288 Valid, 19362 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 18:04:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110648 states.