/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_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:25:18,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:25:18,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:25:18,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:25:18,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:25:18,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:25:18,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:25:18,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:25:18,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:25:18,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:25:18,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:25:18,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:25:18,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:25:18,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:25:18,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:25:18,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:25:18,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:25:18,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:25:18,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:25:18,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:25:18,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:25:18,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:25:18,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:25:18,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:25:18,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:25:18,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:25:18,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:25:18,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:25:18,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:25:18,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:25:18,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:25:18,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:25:18,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:25:18,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:25:18,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:25:18,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:25:18,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:25:18,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:25:18,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:25:18,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:25:18,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:25:18,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:25:18,569 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:25:18,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:25:18,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:25:18,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:25:18,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:25:18,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:25:18,571 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:25:18,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:25:18,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:25:18,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:25:18,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:25:18,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:25:18,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:25:18,573 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:25:18,573 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:25:18,573 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:25:18,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:25:18,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:25:18,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:25:18,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:25:18,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:25:18,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:25:18,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:25:18,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:25:18,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:25:18,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:25:18,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:25:18,576 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:25:18,576 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:25:18,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:25:18,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:25:18,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:25:18,577 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:25:18,578 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:25:18,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:25:18,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:25:18,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:25:18,830 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:25:18,831 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:25:18,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 06:25:18,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066928606/17998db794c54ebd873c25f331e86e60/FLAG4d7e0f95b [2022-01-11 06:25:19,357 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:25:19,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 06:25:19,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066928606/17998db794c54ebd873c25f331e86e60/FLAG4d7e0f95b [2022-01-11 06:25:19,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066928606/17998db794c54ebd873c25f331e86e60 [2022-01-11 06:25:19,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:25:19,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:25:19,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:25:19,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:25:19,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:25:19,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:25:19" (1/1) ... [2022-01-11 06:25:19,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce5e5ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:19, skipping insertion in model container [2022-01-11 06:25:19,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:25:19" (1/1) ... [2022-01-11 06:25:19,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:25:19,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:25:20,039 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7347,7360] [2022-01-11 06:25:20,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:25:20,103 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:25:20,170 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7347,7360] [2022-01-11 06:25:20,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:25:20,221 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:25:20,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:20 WrapperNode [2022-01-11 06:25:20,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:25:20,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:25:20,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:25:20,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:25:20,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:20" (1/1) ... [2022-01-11 06:25:20,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:20" (1/1) ... [2022-01-11 06:25:20,278 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 575 [2022-01-11 06:25:20,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:25:20,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:25:20,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:25:20,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:25:20,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:20" (1/1) ... [2022-01-11 06:25:20,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:20" (1/1) ... [2022-01-11 06:25:20,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:20" (1/1) ... [2022-01-11 06:25:20,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:20" (1/1) ... [2022-01-11 06:25:20,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:20" (1/1) ... [2022-01-11 06:25:20,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:20" (1/1) ... [2022-01-11 06:25:20,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:20" (1/1) ... [2022-01-11 06:25:20,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:25:20,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:25:20,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:25:20,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:25:20,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:20" (1/1) ... [2022-01-11 06:25:20,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:25:20,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:25:20,357 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) [2022-01-11 06:25:20,380 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 [2022-01-11 06:25:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:25:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:25:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:25:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:25:20,551 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:25:20,553 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:25:21,034 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:25:21,041 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:25:21,042 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:25:21,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:25:21 BoogieIcfgContainer [2022-01-11 06:25:21,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:25:21,044 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:25:21,045 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:25:21,046 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:25:21,049 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:25:21" (1/1) ... [2022-01-11 06:25:21,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:25:21 BasicIcfg [2022-01-11 06:25:21,490 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:25:21,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:25:21,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:25:21,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:25:21,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:25:19" (1/4) ... [2022-01-11 06:25:21,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b6ebdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:25:21, skipping insertion in model container [2022-01-11 06:25:21,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:20" (2/4) ... [2022-01-11 06:25:21,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b6ebdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:25:21, skipping insertion in model container [2022-01-11 06:25:21,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:25:21" (3/4) ... [2022-01-11 06:25:21,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b6ebdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:25:21, skipping insertion in model container [2022-01-11 06:25:21,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:25:21" (4/4) ... [2022-01-11 06:25:21,499 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 06:25:21,506 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:25:21,506 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:25:21,560 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:25:21,567 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 [2022-01-11 06:25:21,568 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:25:21,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 138 states have (on average 1.7608695652173914) internal successors, (243), 139 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:21,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 06:25:21,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:21,597 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] [2022-01-11 06:25:21,597 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:21,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:21,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1759176982, now seen corresponding path program 1 times [2022-01-11 06:25:21,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:21,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582408686] [2022-01-11 06:25:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:21,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:22,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:22,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582408686] [2022-01-11 06:25:22,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582408686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:22,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:22,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:22,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566275577] [2022-01-11 06:25:22,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:22,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:22,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:22,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:22,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:22,275 INFO L87 Difference]: Start difference. First operand has 140 states, 138 states have (on average 1.7608695652173914) internal successors, (243), 139 states have internal predecessors, (243), 0 states have call successors, (0), 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 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:22,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:22,405 INFO L93 Difference]: Finished difference Result 303 states and 512 transitions. [2022-01-11 06:25:22,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:22,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-11 06:25:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:22,425 INFO L225 Difference]: With dead ends: 303 [2022-01-11 06:25:22,426 INFO L226 Difference]: Without dead ends: 211 [2022-01-11 06:25:22,429 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 [2022-01-11 06:25:22,434 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 138 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:22,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 419 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:25:22,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-01-11 06:25:22,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2022-01-11 06:25:22,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.5797101449275361) internal successors, (327), 207 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 327 transitions. [2022-01-11 06:25:22,500 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 327 transitions. Word has length 56 [2022-01-11 06:25:22,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:22,501 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 327 transitions. [2022-01-11 06:25:22,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 327 transitions. [2022-01-11 06:25:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-11 06:25:22,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:22,503 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] [2022-01-11 06:25:22,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:25:22,504 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:22,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:22,504 INFO L85 PathProgramCache]: Analyzing trace with hash -350815428, now seen corresponding path program 1 times [2022-01-11 06:25:22,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:22,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137221727] [2022-01-11 06:25:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:22,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:22,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:22,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137221727] [2022-01-11 06:25:22,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137221727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:22,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:22,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:25:22,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916721024] [2022-01-11 06:25:22,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:22,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:25:22,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:22,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:25:22,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:25:22,684 INFO L87 Difference]: Start difference. First operand 208 states and 327 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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) [2022-01-11 06:25:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:22,785 INFO L93 Difference]: Finished difference Result 583 states and 912 transitions. [2022-01-11 06:25:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:25:22,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 [2022-01-11 06:25:22,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:22,788 INFO L225 Difference]: With dead ends: 583 [2022-01-11 06:25:22,789 INFO L226 Difference]: Without dead ends: 400 [2022-01-11 06:25:22,796 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 [2022-01-11 06:25:22,797 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 464 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:22,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 487 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-01-11 06:25:22,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 398. [2022-01-11 06:25:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 1.566750629722922) internal successors, (622), 397 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:22,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 622 transitions. [2022-01-11 06:25:22,845 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 622 transitions. Word has length 58 [2022-01-11 06:25:22,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:22,846 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 622 transitions. [2022-01-11 06:25:22,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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) [2022-01-11 06:25:22,847 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 622 transitions. [2022-01-11 06:25:22,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 06:25:22,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:22,856 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] [2022-01-11 06:25:22,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:25:22,858 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:22,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:22,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1550052374, now seen corresponding path program 1 times [2022-01-11 06:25:22,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:22,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278565502] [2022-01-11 06:25:22,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:22,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:22,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:22,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278565502] [2022-01-11 06:25:22,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278565502] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:22,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:22,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:22,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285476063] [2022-01-11 06:25:22,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:22,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:22,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:22,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:22,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:22,945 INFO L87 Difference]: Start difference. First operand 398 states and 622 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) [2022-01-11 06:25:22,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:22,989 INFO L93 Difference]: Finished difference Result 1156 states and 1802 transitions. [2022-01-11 06:25:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:22,990 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 [2022-01-11 06:25:22,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:22,993 INFO L225 Difference]: With dead ends: 1156 [2022-01-11 06:25:22,994 INFO L226 Difference]: Without dead ends: 786 [2022-01-11 06:25:22,997 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 [2022-01-11 06:25:23,001 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 201 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:23,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 613 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:23,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-01-11 06:25:23,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 400. [2022-01-11 06:25:23,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 1.5639097744360901) internal successors, (624), 399 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 624 transitions. [2022-01-11 06:25:23,070 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 624 transitions. Word has length 59 [2022-01-11 06:25:23,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:23,072 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 624 transitions. [2022-01-11 06:25:23,072 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) [2022-01-11 06:25:23,072 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 624 transitions. [2022-01-11 06:25:23,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 06:25:23,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:23,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:23,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:25:23,073 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:23,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash 698178371, now seen corresponding path program 1 times [2022-01-11 06:25:23,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:23,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39082360] [2022-01-11 06:25:23,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:23,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:23,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:23,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39082360] [2022-01-11 06:25:23,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39082360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:23,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:23,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:23,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381312085] [2022-01-11 06:25:23,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:23,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:23,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:23,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:23,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:23,228 INFO L87 Difference]: Start difference. First operand 400 states and 624 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:23,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:23,276 INFO L93 Difference]: Finished difference Result 684 states and 1105 transitions. [2022-01-11 06:25:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:23,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-11 06:25:23,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:23,279 INFO L225 Difference]: With dead ends: 684 [2022-01-11 06:25:23,280 INFO L226 Difference]: Without dead ends: 523 [2022-01-11 06:25:23,280 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 [2022-01-11 06:25:23,286 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 122 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:23,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 490 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:23,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-01-11 06:25:23,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 521. [2022-01-11 06:25:23,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 1.5942307692307693) internal successors, (829), 520 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:23,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 829 transitions. [2022-01-11 06:25:23,322 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 829 transitions. Word has length 60 [2022-01-11 06:25:23,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:23,323 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 829 transitions. [2022-01-11 06:25:23,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:23,324 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 829 transitions. [2022-01-11 06:25:23,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 06:25:23,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:23,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:23,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:25:23,327 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:23,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:23,327 INFO L85 PathProgramCache]: Analyzing trace with hash -852493033, now seen corresponding path program 1 times [2022-01-11 06:25:23,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:23,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874173629] [2022-01-11 06:25:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:23,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:23,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:23,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874173629] [2022-01-11 06:25:23,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874173629] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:23,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:23,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:25:23,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800676803] [2022-01-11 06:25:23,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:23,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:25:23,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:23,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:25:23,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:25:23,492 INFO L87 Difference]: Start difference. First operand 521 states and 829 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:23,684 INFO L93 Difference]: Finished difference Result 2006 states and 3190 transitions. [2022-01-11 06:25:23,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:25:23,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-11 06:25:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:23,691 INFO L225 Difference]: With dead ends: 2006 [2022-01-11 06:25:23,691 INFO L226 Difference]: Without dead ends: 1497 [2022-01-11 06:25:23,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:25:23,693 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 622 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:23,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 891 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:23,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2022-01-11 06:25:23,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1004. [2022-01-11 06:25:23,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 1.5812562313060818) internal successors, (1586), 1003 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:23,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1586 transitions. [2022-01-11 06:25:23,783 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1586 transitions. Word has length 60 [2022-01-11 06:25:23,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:23,784 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1586 transitions. [2022-01-11 06:25:23,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:23,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1586 transitions. [2022-01-11 06:25:23,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 06:25:23,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:23,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:23,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:25:23,785 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:23,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:23,786 INFO L85 PathProgramCache]: Analyzing trace with hash 782939259, now seen corresponding path program 1 times [2022-01-11 06:25:23,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:23,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271199956] [2022-01-11 06:25:23,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:23,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:23,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:23,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271199956] [2022-01-11 06:25:23,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271199956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:23,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:23,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:25:23,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790001355] [2022-01-11 06:25:23,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:23,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:25:23,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:23,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:25:23,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:25:23,867 INFO L87 Difference]: Start difference. First operand 1004 states and 1586 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:23,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:23,944 INFO L93 Difference]: Finished difference Result 1753 states and 2763 transitions. [2022-01-11 06:25:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:25:23,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-11 06:25:23,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:23,949 INFO L225 Difference]: With dead ends: 1753 [2022-01-11 06:25:23,950 INFO L226 Difference]: Without dead ends: 765 [2022-01-11 06:25:23,951 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 [2022-01-11 06:25:23,953 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 69 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:23,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 671 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:23,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-01-11 06:25:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2022-01-11 06:25:24,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 1.5719895287958114) internal successors, (1201), 764 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:24,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1201 transitions. [2022-01-11 06:25:24,041 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1201 transitions. Word has length 60 [2022-01-11 06:25:24,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:24,041 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1201 transitions. [2022-01-11 06:25:24,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:24,042 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1201 transitions. [2022-01-11 06:25:24,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 06:25:24,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:24,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:24,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:25:24,044 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:24,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:24,044 INFO L85 PathProgramCache]: Analyzing trace with hash -454976374, now seen corresponding path program 1 times [2022-01-11 06:25:24,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:24,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419627091] [2022-01-11 06:25:24,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:24,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:24,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:24,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419627091] [2022-01-11 06:25:24,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419627091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:24,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:24,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:24,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403605955] [2022-01-11 06:25:24,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:24,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:24,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:24,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:24,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:24,101 INFO L87 Difference]: Start difference. First operand 765 states and 1201 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) [2022-01-11 06:25:24,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:24,195 INFO L93 Difference]: Finished difference Result 1508 states and 2361 transitions. [2022-01-11 06:25:24,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:24,196 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 [2022-01-11 06:25:24,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:24,200 INFO L225 Difference]: With dead ends: 1508 [2022-01-11 06:25:24,200 INFO L226 Difference]: Without dead ends: 1009 [2022-01-11 06:25:24,201 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 [2022-01-11 06:25:24,203 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 198 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:24,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 423 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:24,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-01-11 06:25:24,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 765. [2022-01-11 06:25:24,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 1.5706806282722514) internal successors, (1200), 764 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1200 transitions. [2022-01-11 06:25:24,266 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1200 transitions. Word has length 62 [2022-01-11 06:25:24,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:24,266 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1200 transitions. [2022-01-11 06:25:24,266 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) [2022-01-11 06:25:24,266 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1200 transitions. [2022-01-11 06:25:24,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:25:24,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:24,267 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] [2022-01-11 06:25:24,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:25:24,268 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:24,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:24,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1486163113, now seen corresponding path program 1 times [2022-01-11 06:25:24,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:24,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482531983] [2022-01-11 06:25:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:24,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:24,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:24,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482531983] [2022-01-11 06:25:24,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482531983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:24,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:24,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:25:24,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570674491] [2022-01-11 06:25:24,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:24,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:25:24,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:24,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:25:24,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:25:24,343 INFO L87 Difference]: Start difference. First operand 765 states and 1200 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2022-01-11 06:25:24,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:24,494 INFO L93 Difference]: Finished difference Result 2239 states and 3515 transitions. [2022-01-11 06:25:24,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:25:24,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 [2022-01-11 06:25:24,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:24,501 INFO L225 Difference]: With dead ends: 2239 [2022-01-11 06:25:24,501 INFO L226 Difference]: Without dead ends: 1504 [2022-01-11 06:25:24,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:25:24,503 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 394 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:24,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 574 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:24,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2022-01-11 06:25:24,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 774. [2022-01-11 06:25:24,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 773 states have (on average 1.5653298835705045) internal successors, (1210), 773 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1210 transitions. [2022-01-11 06:25:24,581 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1210 transitions. Word has length 63 [2022-01-11 06:25:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:24,582 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 1210 transitions. [2022-01-11 06:25:24,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2022-01-11 06:25:24,582 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1210 transitions. [2022-01-11 06:25:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:25:24,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:24,583 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] [2022-01-11 06:25:24,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:25:24,584 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:24,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:24,584 INFO L85 PathProgramCache]: Analyzing trace with hash 855704488, now seen corresponding path program 1 times [2022-01-11 06:25:24,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:24,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020505382] [2022-01-11 06:25:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:24,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:24,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:24,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020505382] [2022-01-11 06:25:24,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020505382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:24,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:24,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:24,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361322924] [2022-01-11 06:25:24,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:24,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:24,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:24,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:24,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:24,754 INFO L87 Difference]: Start difference. First operand 774 states and 1210 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:24,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:24,927 INFO L93 Difference]: Finished difference Result 1946 states and 3137 transitions. [2022-01-11 06:25:24,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:24,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 06:25:24,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:24,933 INFO L225 Difference]: With dead ends: 1946 [2022-01-11 06:25:24,933 INFO L226 Difference]: Without dead ends: 1330 [2022-01-11 06:25:24,934 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 [2022-01-11 06:25:24,935 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 115 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:24,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 386 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:24,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2022-01-11 06:25:25,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1319. [2022-01-11 06:25:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.5880121396054627) internal successors, (2093), 1318 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:25,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2093 transitions. [2022-01-11 06:25:25,072 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2093 transitions. Word has length 63 [2022-01-11 06:25:25,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:25,073 INFO L470 AbstractCegarLoop]: Abstraction has 1319 states and 2093 transitions. [2022-01-11 06:25:25,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:25,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2093 transitions. [2022-01-11 06:25:25,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:25:25,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:25,078 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] [2022-01-11 06:25:25,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:25:25,079 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:25,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:25,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1786863710, now seen corresponding path program 1 times [2022-01-11 06:25:25,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:25,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080546960] [2022-01-11 06:25:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:25,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:25,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:25,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080546960] [2022-01-11 06:25:25,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080546960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:25,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:25,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:25,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128628853] [2022-01-11 06:25:25,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:25,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:25,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:25,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:25,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:25,191 INFO L87 Difference]: Start difference. First operand 1319 states and 2093 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2022-01-11 06:25:25,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:25,486 INFO L93 Difference]: Finished difference Result 3631 states and 5839 transitions. [2022-01-11 06:25:25,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:25,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 [2022-01-11 06:25:25,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:25,497 INFO L225 Difference]: With dead ends: 3631 [2022-01-11 06:25:25,497 INFO L226 Difference]: Without dead ends: 2470 [2022-01-11 06:25:25,500 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 [2022-01-11 06:25:25,501 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 145 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:25,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 567 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:25,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2022-01-11 06:25:25,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2468. [2022-01-11 06:25:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 1.5820835022294284) internal successors, (3903), 2467 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3903 transitions. [2022-01-11 06:25:25,771 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3903 transitions. Word has length 65 [2022-01-11 06:25:25,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:25,771 INFO L470 AbstractCegarLoop]: Abstraction has 2468 states and 3903 transitions. [2022-01-11 06:25:25,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2022-01-11 06:25:25,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3903 transitions. [2022-01-11 06:25:25,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:25:25,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:25,773 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] [2022-01-11 06:25:25,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:25:25,774 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:25,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:25,774 INFO L85 PathProgramCache]: Analyzing trace with hash -231611714, now seen corresponding path program 1 times [2022-01-11 06:25:25,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:25,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830983441] [2022-01-11 06:25:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:25,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:25,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:25,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830983441] [2022-01-11 06:25:25,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830983441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:25,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:25,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:25:25,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105282949] [2022-01-11 06:25:25,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:25,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:25:25,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:25,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:25:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:25:25,898 INFO L87 Difference]: Start difference. First operand 2468 states and 3903 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2022-01-11 06:25:26,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:26,472 INFO L93 Difference]: Finished difference Result 7106 states and 11270 transitions. [2022-01-11 06:25:26,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:25:26,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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 [2022-01-11 06:25:26,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:26,490 INFO L225 Difference]: With dead ends: 7106 [2022-01-11 06:25:26,491 INFO L226 Difference]: Without dead ends: 4706 [2022-01-11 06:25:26,495 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 [2022-01-11 06:25:26,496 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 439 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:26,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 465 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:26,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2022-01-11 06:25:26,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4704. [2022-01-11 06:25:26,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4704 states, 4703 states have (on average 1.5772910907931108) internal successors, (7418), 4703 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4704 states to 4704 states and 7418 transitions. [2022-01-11 06:25:26,967 INFO L78 Accepts]: Start accepts. Automaton has 4704 states and 7418 transitions. Word has length 65 [2022-01-11 06:25:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:26,967 INFO L470 AbstractCegarLoop]: Abstraction has 4704 states and 7418 transitions. [2022-01-11 06:25:26,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2022-01-11 06:25:26,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4704 states and 7418 transitions. [2022-01-11 06:25:26,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:25:26,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:26,971 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] [2022-01-11 06:25:26,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:25:26,972 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:26,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:26,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1245473408, now seen corresponding path program 1 times [2022-01-11 06:25:26,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:26,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516546827] [2022-01-11 06:25:26,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:26,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:27,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:27,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:27,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516546827] [2022-01-11 06:25:27,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516546827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:27,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:27,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:25:27,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800596497] [2022-01-11 06:25:27,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:27,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:25:27,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:27,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:25:27,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:25:27,053 INFO L87 Difference]: Start difference. First operand 4704 states and 7418 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) [2022-01-11 06:25:27,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:27,497 INFO L93 Difference]: Finished difference Result 6962 states and 11015 transitions. [2022-01-11 06:25:27,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:25:27,498 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 [2022-01-11 06:25:27,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:27,513 INFO L225 Difference]: With dead ends: 6962 [2022-01-11 06:25:27,513 INFO L226 Difference]: Without dead ends: 3948 [2022-01-11 06:25:27,518 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 [2022-01-11 06:25:27,519 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 47 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:27,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 651 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:27,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2022-01-11 06:25:27,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3948. [2022-01-11 06:25:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 3947 states have (on average 1.574866987585508) internal successors, (6216), 3947 states have internal predecessors, (6216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:27,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 6216 transitions. [2022-01-11 06:25:27,925 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 6216 transitions. Word has length 67 [2022-01-11 06:25:27,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:27,925 INFO L470 AbstractCegarLoop]: Abstraction has 3948 states and 6216 transitions. [2022-01-11 06:25:27,926 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) [2022-01-11 06:25:27,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 6216 transitions. [2022-01-11 06:25:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:25:27,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:27,928 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] [2022-01-11 06:25:27,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:25:27,928 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:27,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:27,929 INFO L85 PathProgramCache]: Analyzing trace with hash 544685371, now seen corresponding path program 1 times [2022-01-11 06:25:27,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:27,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445134131] [2022-01-11 06:25:27,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:27,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:28,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:28,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445134131] [2022-01-11 06:25:28,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445134131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:28,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:28,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:28,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882741754] [2022-01-11 06:25:28,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:28,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:28,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:28,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:28,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:28,009 INFO L87 Difference]: Start difference. First operand 3948 states and 6216 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2022-01-11 06:25:28,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:28,511 INFO L93 Difference]: Finished difference Result 7389 states and 11808 transitions. [2022-01-11 06:25:28,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:28,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 [2022-01-11 06:25:28,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:28,532 INFO L225 Difference]: With dead ends: 7389 [2022-01-11 06:25:28,532 INFO L226 Difference]: Without dead ends: 5450 [2022-01-11 06:25:28,536 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 [2022-01-11 06:25:28,536 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 114 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:28,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 472 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:28,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5450 states. [2022-01-11 06:25:29,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5450 to 5448. [2022-01-11 06:25:29,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5448 states, 5447 states have (on average 1.5825224894437304) internal successors, (8620), 5447 states have internal predecessors, (8620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5448 states to 5448 states and 8620 transitions. [2022-01-11 06:25:29,162 INFO L78 Accepts]: Start accepts. Automaton has 5448 states and 8620 transitions. Word has length 67 [2022-01-11 06:25:29,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:29,162 INFO L470 AbstractCegarLoop]: Abstraction has 5448 states and 8620 transitions. [2022-01-11 06:25:29,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2022-01-11 06:25:29,175 INFO L276 IsEmpty]: Start isEmpty. Operand 5448 states and 8620 transitions. [2022-01-11 06:25:29,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:25:29,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:29,178 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] [2022-01-11 06:25:29,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:25:29,178 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:29,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:29,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1567878979, now seen corresponding path program 1 times [2022-01-11 06:25:29,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:29,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837376615] [2022-01-11 06:25:29,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:29,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:29,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:29,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837376615] [2022-01-11 06:25:29,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837376615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:29,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:29,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:25:29,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950514423] [2022-01-11 06:25:29,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:29,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:25:29,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:29,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:25:29,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:25:29,297 INFO L87 Difference]: Start difference. First operand 5448 states and 8620 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:29,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:29,990 INFO L93 Difference]: Finished difference Result 14271 states and 22522 transitions. [2022-01-11 06:25:29,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:25:29,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-11 06:25:29,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:30,012 INFO L225 Difference]: With dead ends: 14271 [2022-01-11 06:25:30,013 INFO L226 Difference]: Without dead ends: 8867 [2022-01-11 06:25:30,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:25:30,027 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 620 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:30,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 863 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:30,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8867 states. [2022-01-11 06:25:30,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8867 to 5587. [2022-01-11 06:25:30,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5587 states, 5586 states have (on average 1.5717866093805943) internal successors, (8780), 5586 states have internal predecessors, (8780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5587 states to 5587 states and 8780 transitions. [2022-01-11 06:25:30,487 INFO L78 Accepts]: Start accepts. Automaton has 5587 states and 8780 transitions. Word has length 67 [2022-01-11 06:25:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:30,487 INFO L470 AbstractCegarLoop]: Abstraction has 5587 states and 8780 transitions. [2022-01-11 06:25:30,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 5587 states and 8780 transitions. [2022-01-11 06:25:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:25:30,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:30,489 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] [2022-01-11 06:25:30,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:25:30,490 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:30,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:30,490 INFO L85 PathProgramCache]: Analyzing trace with hash 726672479, now seen corresponding path program 1 times [2022-01-11 06:25:30,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:30,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930335387] [2022-01-11 06:25:30,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:30,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:30,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:30,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930335387] [2022-01-11 06:25:30,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930335387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:30,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:30,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:25:30,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472590677] [2022-01-11 06:25:30,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:30,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:25:30,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:30,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:25:30,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:25:30,567 INFO L87 Difference]: Start difference. First operand 5587 states and 8780 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) [2022-01-11 06:25:30,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:30,999 INFO L93 Difference]: Finished difference Result 10080 states and 15820 transitions. [2022-01-11 06:25:31,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:25:31,000 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 [2022-01-11 06:25:31,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:31,009 INFO L225 Difference]: With dead ends: 10080 [2022-01-11 06:25:31,009 INFO L226 Difference]: Without dead ends: 4529 [2022-01-11 06:25:31,017 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 [2022-01-11 06:25:31,017 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 47 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:31,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 647 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4529 states. [2022-01-11 06:25:31,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4529 to 4529. [2022-01-11 06:25:31,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4529 states, 4528 states have (on average 1.5655918727915195) internal successors, (7089), 4528 states have internal predecessors, (7089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 7089 transitions. [2022-01-11 06:25:31,398 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 7089 transitions. Word has length 67 [2022-01-11 06:25:31,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:31,399 INFO L470 AbstractCegarLoop]: Abstraction has 4529 states and 7089 transitions. [2022-01-11 06:25:31,399 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) [2022-01-11 06:25:31,399 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 7089 transitions. [2022-01-11 06:25:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:25:31,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:31,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:31,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:25:31,401 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:31,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:31,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1858213311, now seen corresponding path program 1 times [2022-01-11 06:25:31,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:31,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133517103] [2022-01-11 06:25:31,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:31,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:31,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:31,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133517103] [2022-01-11 06:25:31,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133517103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:31,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:31,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:31,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735136404] [2022-01-11 06:25:31,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:31,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:31,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:31,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:31,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:31,442 INFO L87 Difference]: Start difference. First operand 4529 states and 7089 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:32,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:32,027 INFO L93 Difference]: Finished difference Result 8996 states and 14098 transitions. [2022-01-11 06:25:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:32,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 06:25:32,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:32,046 INFO L225 Difference]: With dead ends: 8996 [2022-01-11 06:25:32,046 INFO L226 Difference]: Without dead ends: 6251 [2022-01-11 06:25:32,053 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 [2022-01-11 06:25:32,054 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 184 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:32,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 508 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:32,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2022-01-11 06:25:32,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 4529. [2022-01-11 06:25:32,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4529 states, 4528 states have (on average 1.5649293286219081) internal successors, (7086), 4528 states have internal predecessors, (7086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 7086 transitions. [2022-01-11 06:25:32,434 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 7086 transitions. Word has length 69 [2022-01-11 06:25:32,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:32,434 INFO L470 AbstractCegarLoop]: Abstraction has 4529 states and 7086 transitions. [2022-01-11 06:25:32,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:32,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 7086 transitions. [2022-01-11 06:25:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 06:25:32,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:32,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:32,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:25:32,438 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash -194381445, now seen corresponding path program 1 times [2022-01-11 06:25:32,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:32,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853207694] [2022-01-11 06:25:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:32,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:32,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:32,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853207694] [2022-01-11 06:25:32,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853207694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:32,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:32,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:32,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307525716] [2022-01-11 06:25:32,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:32,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:32,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:32,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:32,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:32,568 INFO L87 Difference]: Start difference. First operand 4529 states and 7086 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:33,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:33,422 INFO L93 Difference]: Finished difference Result 12261 states and 19496 transitions. [2022-01-11 06:25:33,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:33,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-11 06:25:33,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:33,436 INFO L225 Difference]: With dead ends: 12261 [2022-01-11 06:25:33,436 INFO L226 Difference]: Without dead ends: 8161 [2022-01-11 06:25:33,441 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 [2022-01-11 06:25:33,442 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 107 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:33,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 380 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:33,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8161 states. [2022-01-11 06:25:34,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8161 to 8087. [2022-01-11 06:25:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8087 states, 8086 states have (on average 1.5701211971308435) internal successors, (12696), 8086 states have internal predecessors, (12696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:34,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8087 states to 8087 states and 12696 transitions. [2022-01-11 06:25:34,397 INFO L78 Accepts]: Start accepts. Automaton has 8087 states and 12696 transitions. Word has length 70 [2022-01-11 06:25:34,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:34,397 INFO L470 AbstractCegarLoop]: Abstraction has 8087 states and 12696 transitions. [2022-01-11 06:25:34,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:34,398 INFO L276 IsEmpty]: Start isEmpty. Operand 8087 states and 12696 transitions. [2022-01-11 06:25:34,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 06:25:34,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:34,400 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] [2022-01-11 06:25:34,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:25:34,400 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:34,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:34,400 INFO L85 PathProgramCache]: Analyzing trace with hash 704453733, now seen corresponding path program 1 times [2022-01-11 06:25:34,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:34,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644756903] [2022-01-11 06:25:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:34,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:34,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:34,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644756903] [2022-01-11 06:25:34,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644756903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:34,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:34,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:34,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485415754] [2022-01-11 06:25:34,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:34,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:34,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:34,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:34,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:34,480 INFO L87 Difference]: Start difference. First operand 8087 states and 12696 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2022-01-11 06:25:35,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:35,692 INFO L93 Difference]: Finished difference Result 20341 states and 32141 transitions. [2022-01-11 06:25:35,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:35,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 [2022-01-11 06:25:35,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:35,723 INFO L225 Difference]: With dead ends: 20341 [2022-01-11 06:25:35,723 INFO L226 Difference]: Without dead ends: 12683 [2022-01-11 06:25:35,740 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 [2022-01-11 06:25:35,740 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 129 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:35,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 536 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:35,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12683 states. [2022-01-11 06:25:36,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12683 to 12681. [2022-01-11 06:25:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12681 states, 12680 states have (on average 1.5579652996845426) internal successors, (19755), 12680 states have internal predecessors, (19755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12681 states to 12681 states and 19755 transitions. [2022-01-11 06:25:36,792 INFO L78 Accepts]: Start accepts. Automaton has 12681 states and 19755 transitions. Word has length 72 [2022-01-11 06:25:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:36,793 INFO L470 AbstractCegarLoop]: Abstraction has 12681 states and 19755 transitions. [2022-01-11 06:25:36,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2022-01-11 06:25:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 12681 states and 19755 transitions. [2022-01-11 06:25:36,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 06:25:36,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:36,795 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] [2022-01-11 06:25:36,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 06:25:36,795 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:36,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:36,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2143638629, now seen corresponding path program 1 times [2022-01-11 06:25:36,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:36,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218198898] [2022-01-11 06:25:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:36,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:36,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:36,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218198898] [2022-01-11 06:25:36,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218198898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:36,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:36,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:36,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676213854] [2022-01-11 06:25:36,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:36,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:36,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:36,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:36,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:36,870 INFO L87 Difference]: Start difference. First operand 12681 states and 19755 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2022-01-11 06:25:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:38,736 INFO L93 Difference]: Finished difference Result 31931 states and 49993 transitions. [2022-01-11 06:25:38,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:38,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 [2022-01-11 06:25:38,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:38,778 INFO L225 Difference]: With dead ends: 31931 [2022-01-11 06:25:38,778 INFO L226 Difference]: Without dead ends: 19812 [2022-01-11 06:25:38,804 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 [2022-01-11 06:25:38,805 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 132 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:38,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 561 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:38,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19812 states. [2022-01-11 06:25:40,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19812 to 19810. [2022-01-11 06:25:40,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19810 states, 19809 states have (on average 1.5436417789893482) internal successors, (30578), 19809 states have internal predecessors, (30578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:40,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19810 states to 19810 states and 30578 transitions. [2022-01-11 06:25:40,510 INFO L78 Accepts]: Start accepts. Automaton has 19810 states and 30578 transitions. Word has length 72 [2022-01-11 06:25:40,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:40,510 INFO L470 AbstractCegarLoop]: Abstraction has 19810 states and 30578 transitions. [2022-01-11 06:25:40,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2022-01-11 06:25:40,510 INFO L276 IsEmpty]: Start isEmpty. Operand 19810 states and 30578 transitions. [2022-01-11 06:25:40,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 06:25:40,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:40,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:40,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 06:25:40,513 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:40,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:40,514 INFO L85 PathProgramCache]: Analyzing trace with hash 711959355, now seen corresponding path program 1 times [2022-01-11 06:25:40,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:40,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662602779] [2022-01-11 06:25:40,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:40,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:40,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:40,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662602779] [2022-01-11 06:25:40,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662602779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:40,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:40,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:25:40,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064539210] [2022-01-11 06:25:40,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:40,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:25:40,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:40,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:25:40,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:25:40,651 INFO L87 Difference]: Start difference. First operand 19810 states and 30578 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:42,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:42,568 INFO L93 Difference]: Finished difference Result 40836 states and 62996 transitions. [2022-01-11 06:25:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:25:42,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 06:25:42,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:42,606 INFO L225 Difference]: With dead ends: 40836 [2022-01-11 06:25:42,606 INFO L226 Difference]: Without dead ends: 21177 [2022-01-11 06:25:42,626 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 [2022-01-11 06:25:42,627 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 419 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:42,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 435 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:42,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21177 states. [2022-01-11 06:25:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21177 to 19868. [2022-01-11 06:25:44,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19868 states, 19867 states have (on average 1.541903659334575) internal successors, (30633), 19867 states have internal predecessors, (30633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 30633 transitions. [2022-01-11 06:25:44,445 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 30633 transitions. Word has length 73 [2022-01-11 06:25:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:44,445 INFO L470 AbstractCegarLoop]: Abstraction has 19868 states and 30633 transitions. [2022-01-11 06:25:44,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:44,446 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 30633 transitions. [2022-01-11 06:25:44,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 06:25:44,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:44,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:44,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 06:25:44,449 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:44,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:44,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2137077765, now seen corresponding path program 1 times [2022-01-11 06:25:44,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:44,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151513720] [2022-01-11 06:25:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:44,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:44,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:44,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151513720] [2022-01-11 06:25:44,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151513720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:44,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:44,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:44,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265082404] [2022-01-11 06:25:44,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:44,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:44,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:44,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:44,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:44,510 INFO L87 Difference]: Start difference. First operand 19868 states and 30633 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:47,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:47,674 INFO L93 Difference]: Finished difference Result 54301 states and 83944 transitions. [2022-01-11 06:25:47,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:47,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-11 06:25:47,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:47,744 INFO L225 Difference]: With dead ends: 54301 [2022-01-11 06:25:47,744 INFO L226 Difference]: Without dead ends: 39536 [2022-01-11 06:25:47,770 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 [2022-01-11 06:25:47,770 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 173 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:47,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 569 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:47,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39536 states. [2022-01-11 06:25:49,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39536 to 19878. [2022-01-11 06:25:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19878 states, 19877 states have (on average 1.541631030839664) internal successors, (30643), 19877 states have internal predecessors, (30643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19878 states to 19878 states and 30643 transitions. [2022-01-11 06:25:49,921 INFO L78 Accepts]: Start accepts. Automaton has 19878 states and 30643 transitions. Word has length 74 [2022-01-11 06:25:49,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:49,921 INFO L470 AbstractCegarLoop]: Abstraction has 19878 states and 30643 transitions. [2022-01-11 06:25:49,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 19878 states and 30643 transitions. [2022-01-11 06:25:49,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 06:25:49,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:49,925 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] [2022-01-11 06:25:49,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 06:25:49,925 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:49,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:49,925 INFO L85 PathProgramCache]: Analyzing trace with hash -147309184, now seen corresponding path program 1 times [2022-01-11 06:25:49,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:49,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936783894] [2022-01-11 06:25:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:49,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:50,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:50,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936783894] [2022-01-11 06:25:50,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936783894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:50,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:50,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:25:50,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477152261] [2022-01-11 06:25:50,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:50,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:25:50,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:50,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:25:50,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:25:50,045 INFO L87 Difference]: Start difference. First operand 19878 states and 30643 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:53,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:53,550 INFO L93 Difference]: Finished difference Result 52779 states and 81316 transitions. [2022-01-11 06:25:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:25:53,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-11 06:25:53,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:53,607 INFO L225 Difference]: With dead ends: 52779 [2022-01-11 06:25:53,608 INFO L226 Difference]: Without dead ends: 34097 [2022-01-11 06:25:53,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:25:53,634 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 746 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:53,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 625 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:53,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34097 states. [2022-01-11 06:25:55,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34097 to 20059. [2022-01-11 06:25:55,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20059 states, 20058 states have (on average 1.5369428656895006) internal successors, (30828), 20058 states have internal predecessors, (30828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20059 states to 20059 states and 30828 transitions. [2022-01-11 06:25:55,922 INFO L78 Accepts]: Start accepts. Automaton has 20059 states and 30828 transitions. Word has length 75 [2022-01-11 06:25:55,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:55,922 INFO L470 AbstractCegarLoop]: Abstraction has 20059 states and 30828 transitions. [2022-01-11 06:25:55,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:55,922 INFO L276 IsEmpty]: Start isEmpty. Operand 20059 states and 30828 transitions. [2022-01-11 06:25:55,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 06:25:55,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:55,926 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] [2022-01-11 06:25:55,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 06:25:55,926 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:55,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:55,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1669104796, now seen corresponding path program 1 times [2022-01-11 06:25:55,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:55,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412345055] [2022-01-11 06:25:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:55,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:56,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:56,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412345055] [2022-01-11 06:25:56,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412345055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:56,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:56,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:25:56,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114105889] [2022-01-11 06:25:56,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:56,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:25:56,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:56,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:25:56,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:25:56,002 INFO L87 Difference]: Start difference. First operand 20059 states and 30828 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:57,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:57,855 INFO L93 Difference]: Finished difference Result 32497 states and 49960 transitions. [2022-01-11 06:25:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:25:57,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-11 06:25:57,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:57,878 INFO L225 Difference]: With dead ends: 32497 [2022-01-11 06:25:57,878 INFO L226 Difference]: Without dead ends: 17423 [2022-01-11 06:25:57,891 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 [2022-01-11 06:25:57,892 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 23 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:57,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 620 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:57,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17423 states. [2022-01-11 06:25:59,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17423 to 17423. [2022-01-11 06:25:59,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17423 states, 17422 states have (on average 1.532602456663988) internal successors, (26701), 17422 states have internal predecessors, (26701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17423 states to 17423 states and 26701 transitions. [2022-01-11 06:25:59,847 INFO L78 Accepts]: Start accepts. Automaton has 17423 states and 26701 transitions. Word has length 75 [2022-01-11 06:25:59,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:59,848 INFO L470 AbstractCegarLoop]: Abstraction has 17423 states and 26701 transitions. [2022-01-11 06:25:59,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:59,848 INFO L276 IsEmpty]: Start isEmpty. Operand 17423 states and 26701 transitions. [2022-01-11 06:25:59,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 06:25:59,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:59,851 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] [2022-01-11 06:25:59,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 06:25:59,851 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:59,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:59,852 INFO L85 PathProgramCache]: Analyzing trace with hash 638902962, now seen corresponding path program 1 times [2022-01-11 06:25:59,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:59,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345494343] [2022-01-11 06:25:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:59,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:59,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:59,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345494343] [2022-01-11 06:25:59,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345494343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:59,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:59,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:59,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313963957] [2022-01-11 06:25:59,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:59,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:59,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:59,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:59,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:59,953 INFO L87 Difference]: Start difference. First operand 17423 states and 26701 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:02,659 INFO L93 Difference]: Finished difference Result 32471 states and 50461 transitions. [2022-01-11 06:26:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:26:02,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-11 06:26:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:02,690 INFO L225 Difference]: With dead ends: 32471 [2022-01-11 06:26:02,690 INFO L226 Difference]: Without dead ends: 23559 [2022-01-11 06:26:02,700 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 [2022-01-11 06:26:02,701 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 106 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:02,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 432 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:26:02,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23559 states. [2022-01-11 06:26:05,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23559 to 23557. [2022-01-11 06:26:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23557 states, 23556 states have (on average 1.5404567838342673) internal successors, (36287), 23556 states have internal predecessors, (36287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 36287 transitions. [2022-01-11 06:26:05,204 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 36287 transitions. Word has length 75 [2022-01-11 06:26:05,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:05,204 INFO L470 AbstractCegarLoop]: Abstraction has 23557 states and 36287 transitions. [2022-01-11 06:26:05,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:05,204 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 36287 transitions. [2022-01-11 06:26:05,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 06:26:05,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:05,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:05,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 06:26:05,208 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:05,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:05,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2097450985, now seen corresponding path program 1 times [2022-01-11 06:26:05,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:05,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110759232] [2022-01-11 06:26:05,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:05,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:05,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:05,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110759232] [2022-01-11 06:26:05,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110759232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:05,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:05,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:26:05,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144364153] [2022-01-11 06:26:05,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:05,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:26:05,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:05,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:26:05,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:26:05,449 INFO L87 Difference]: Start difference. First operand 23557 states and 36287 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)