/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.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:23:30,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:23:30,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:23:30,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:23:30,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:23:30,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:23:30,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:23:30,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:23:30,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:23:30,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:23:30,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:23:30,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:23:30,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:23:30,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:23:30,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:23:30,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:23:30,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:23:30,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:23:30,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:23:30,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:23:30,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:23:30,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:23:30,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:23:30,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:23:30,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 06:23:30,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:23:30,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:23:30,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:23:30,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:23:30,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:23:30,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:23:30,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:23:30,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:23:30,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:23:30,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:23:30,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:23:30,992 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 06:23:31,035 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:23:31,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:23:31,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:23:31,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:23:31,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:23:31,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:23:31,037 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:23:31,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:23:31,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:23:31,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:23:31,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:23:31,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:23:31,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:23:31,038 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:23:31,038 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:23:31,038 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:23:31,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:23:31,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:23:31,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:23:31,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:23:31,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:23:31,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:23:31,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:23:31,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:23:31,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:23:31,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:23:31,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:23:31,040 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:23:31,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:23:31,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:23:31,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:23:31,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:23:31,041 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:23:31,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:23:31,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:23:31,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:23:31,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:23:31,382 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:23:31,383 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:23:31,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 06:23:31,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e940594c/ec8c7582ec86483aaa5c53ca87795086/FLAGd389f6f15 [2022-01-11 06:23:31,790 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:23:31,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 06:23:31,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e940594c/ec8c7582ec86483aaa5c53ca87795086/FLAGd389f6f15 [2022-01-11 06:23:32,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e940594c/ec8c7582ec86483aaa5c53ca87795086 [2022-01-11 06:23:32,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:23:32,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:23:32,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:23:32,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:23:32,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:23:32,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:23:32" (1/1) ... [2022-01-11 06:23:32,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48179fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:32, skipping insertion in model container [2022-01-11 06:23:32,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:23:32" (1/1) ... [2022-01-11 06:23:32,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:23:32,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:23:32,429 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.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7181,7194] [2022-01-11 06:23:32,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:23:32,481 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:23:32,527 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.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7181,7194] [2022-01-11 06:23:32,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:23:32,556 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:23:32,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:32 WrapperNode [2022-01-11 06:23:32,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:23:32,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:23:32,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:23:32,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:23:32,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:32" (1/1) ... [2022-01-11 06:23:32,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:32" (1/1) ... [2022-01-11 06:23:32,616 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 557 [2022-01-11 06:23:32,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:23:32,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:23:32,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:23:32,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:23:32,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:32" (1/1) ... [2022-01-11 06:23:32,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:32" (1/1) ... [2022-01-11 06:23:32,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:32" (1/1) ... [2022-01-11 06:23:32,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:32" (1/1) ... [2022-01-11 06:23:32,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:32" (1/1) ... [2022-01-11 06:23:32,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:32" (1/1) ... [2022-01-11 06:23:32,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:32" (1/1) ... [2022-01-11 06:23:32,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:23:32,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:23:32,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:23:32,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:23:32,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:32" (1/1) ... [2022-01-11 06:23:32,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:23:32,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:23:32,712 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 06:23:32,730 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 06:23:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:23:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:23:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:23:32,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:23:32,864 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:23:32,865 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:23:33,230 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:23:33,239 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:23:33,239 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:23:33,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:23:33 BoogieIcfgContainer [2022-01-11 06:23:33,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:23:33,243 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:23:33,243 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:23:33,245 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:23:33,248 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:23:33" (1/1) ... [2022-01-11 06:23:33,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:23:33 BasicIcfg [2022-01-11 06:23:33,577 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:23:33,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:23:33,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:23:33,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:23:33,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:23:32" (1/4) ... [2022-01-11 06:23:33,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c59aeba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:23:33, skipping insertion in model container [2022-01-11 06:23:33,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:32" (2/4) ... [2022-01-11 06:23:33,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c59aeba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:23:33, skipping insertion in model container [2022-01-11 06:23:33,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:23:33" (3/4) ... [2022-01-11 06:23:33,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c59aeba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:23:33, skipping insertion in model container [2022-01-11 06:23:33,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:23:33" (4/4) ... [2022-01-11 06:23:33,584 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 06:23:33,588 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:23:33,588 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:23:33,630 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:23:33,635 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 06:23:33,635 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:23:33,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 132 states have (on average 1.75) internal successors, (231), 133 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 06:23:33,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-11 06:23:33,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:33,655 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] [2022-01-11 06:23:33,655 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:33,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:33,659 INFO L85 PathProgramCache]: Analyzing trace with hash -768430416, now seen corresponding path program 1 times [2022-01-11 06:23:33,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:33,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189561314] [2022-01-11 06:23:33,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:33,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:34,177 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 06:23:34,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:34,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189561314] [2022-01-11 06:23:34,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189561314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:34,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:34,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:34,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244975281] [2022-01-11 06:23:34,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:34,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:34,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:34,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:34,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:34,212 INFO L87 Difference]: Start difference. First operand has 134 states, 132 states have (on average 1.75) internal successors, (231), 133 states have internal predecessors, (231), 0 states have call successors, (0), 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 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 06:23:34,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:34,291 INFO L93 Difference]: Finished difference Result 299 states and 504 transitions. [2022-01-11 06:23:34,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:34,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-01-11 06:23:34,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:34,312 INFO L225 Difference]: With dead ends: 299 [2022-01-11 06:23:34,312 INFO L226 Difference]: Without dead ends: 207 [2022-01-11 06:23:34,314 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 06:23:34,316 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 136 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:34,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 420 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:34,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-01-11 06:23:34,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 204. [2022-01-11 06:23:34,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.6206896551724137) internal successors, (329), 203 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 06:23:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 329 transitions. [2022-01-11 06:23:34,367 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 329 transitions. Word has length 50 [2022-01-11 06:23:34,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:34,367 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 329 transitions. [2022-01-11 06:23:34,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 06:23:34,367 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 329 transitions. [2022-01-11 06:23:34,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 06:23:34,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:34,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:34,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:23:34,369 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:34,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:34,370 INFO L85 PathProgramCache]: Analyzing trace with hash 66348070, now seen corresponding path program 1 times [2022-01-11 06:23:34,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:34,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874336083] [2022-01-11 06:23:34,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:34,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:23:34,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:34,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874336083] [2022-01-11 06:23:34,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874336083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:34,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:34,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:23:34,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458322827] [2022-01-11 06:23:34,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:34,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:23:34,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:34,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:23:34,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:23:34,525 INFO L87 Difference]: Start difference. First operand 204 states and 329 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:23:34,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:34,604 INFO L93 Difference]: Finished difference Result 567 states and 911 transitions. [2022-01-11 06:23:34,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:23:34,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-11 06:23:34,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:34,606 INFO L225 Difference]: With dead ends: 567 [2022-01-11 06:23:34,606 INFO L226 Difference]: Without dead ends: 384 [2022-01-11 06:23:34,612 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 06:23:34,613 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 434 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:34,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 464 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:34,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-01-11 06:23:34,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2022-01-11 06:23:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.6062992125984252) internal successors, (612), 381 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 06:23:34,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 612 transitions. [2022-01-11 06:23:34,653 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 612 transitions. Word has length 52 [2022-01-11 06:23:34,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:34,653 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 612 transitions. [2022-01-11 06:23:34,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:23:34,654 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 612 transitions. [2022-01-11 06:23:34,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 06:23:34,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:34,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:34,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:23:34,664 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:34,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:34,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1263765920, now seen corresponding path program 1 times [2022-01-11 06:23:34,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:34,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251727913] [2022-01-11 06:23:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:34,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:34,747 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 06:23:34,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:34,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251727913] [2022-01-11 06:23:34,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251727913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:34,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:34,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:34,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412549526] [2022-01-11 06:23:34,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:34,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:34,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:34,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:34,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:34,749 INFO L87 Difference]: Start difference. First operand 382 states and 612 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:23:34,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:34,817 INFO L93 Difference]: Finished difference Result 1104 states and 1765 transitions. [2022-01-11 06:23:34,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:34,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-11 06:23:34,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:34,822 INFO L225 Difference]: With dead ends: 1104 [2022-01-11 06:23:34,822 INFO L226 Difference]: Without dead ends: 746 [2022-01-11 06:23:34,826 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 06:23:34,830 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 181 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 581 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 06:23:34,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 581 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-01-11 06:23:34,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 384. [2022-01-11 06:23:34,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.6031331592689295) internal successors, (614), 383 states have internal predecessors, (614), 0 states have call successors, (0), 0 states 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 06:23:34,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 614 transitions. [2022-01-11 06:23:34,861 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 614 transitions. Word has length 53 [2022-01-11 06:23:34,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:34,862 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 614 transitions. [2022-01-11 06:23:34,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:23:34,862 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 614 transitions. [2022-01-11 06:23:34,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 06:23:34,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:34,863 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] [2022-01-11 06:23:34,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:23:34,863 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:34,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:34,864 INFO L85 PathProgramCache]: Analyzing trace with hash 827027393, now seen corresponding path program 1 times [2022-01-11 06:23:34,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:34,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136940015] [2022-01-11 06:23:34,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:34,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:35,024 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 06:23:35,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:35,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136940015] [2022-01-11 06:23:35,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136940015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:35,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:35,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:23:35,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339653485] [2022-01-11 06:23:35,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:35,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:23:35,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:35,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:23:35,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:23:35,026 INFO L87 Difference]: Start difference. First operand 384 states and 614 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 06:23:35,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:35,145 INFO L93 Difference]: Finished difference Result 1462 states and 2336 transitions. [2022-01-11 06:23:35,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:23:35,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-11 06:23:35,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:35,151 INFO L225 Difference]: With dead ends: 1462 [2022-01-11 06:23:35,151 INFO L226 Difference]: Without dead ends: 1098 [2022-01-11 06:23:35,152 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 06:23:35,157 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 636 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:35,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 823 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-01-11 06:23:35,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 734. [2022-01-11 06:23:35,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.5907230559345158) internal successors, (1166), 733 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states 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 06:23:35,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1166 transitions. [2022-01-11 06:23:35,228 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1166 transitions. Word has length 54 [2022-01-11 06:23:35,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:35,229 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1166 transitions. [2022-01-11 06:23:35,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 06:23:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1166 transitions. [2022-01-11 06:23:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 06:23:35,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:35,232 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] [2022-01-11 06:23:35,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:23:35,232 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:35,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:35,233 INFO L85 PathProgramCache]: Analyzing trace with hash 58545189, now seen corresponding path program 1 times [2022-01-11 06:23:35,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:35,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334770580] [2022-01-11 06:23:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:35,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:35,369 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 06:23:35,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:35,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334770580] [2022-01-11 06:23:35,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334770580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:35,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:35,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:35,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585774149] [2022-01-11 06:23:35,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:35,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:35,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:35,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:35,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:35,371 INFO L87 Difference]: Start difference. First operand 734 states and 1166 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 06:23:35,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:35,499 INFO L93 Difference]: Finished difference Result 1822 states and 2980 transitions. [2022-01-11 06:23:35,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:35,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-11 06:23:35,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:35,504 INFO L225 Difference]: With dead ends: 1822 [2022-01-11 06:23:35,504 INFO L226 Difference]: Without dead ends: 1244 [2022-01-11 06:23:35,505 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 06:23:35,506 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 115 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:35,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 373 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:35,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2022-01-11 06:23:35,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1234. [2022-01-11 06:23:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 1.5847526358475263) internal successors, (1954), 1233 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states 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 06:23:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1954 transitions. [2022-01-11 06:23:35,637 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1954 transitions. Word has length 54 [2022-01-11 06:23:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:35,639 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1954 transitions. [2022-01-11 06:23:35,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 06:23:35,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1954 transitions. [2022-01-11 06:23:35,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 06:23:35,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:35,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:35,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:23:35,645 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:35,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:35,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2086165835, now seen corresponding path program 1 times [2022-01-11 06:23:35,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:35,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270055476] [2022-01-11 06:23:35,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:35,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:35,750 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 06:23:35,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:35,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270055476] [2022-01-11 06:23:35,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270055476] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:35,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:35,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:23:35,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112260567] [2022-01-11 06:23:35,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:35,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:23:35,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:35,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:23:35,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:23:35,752 INFO L87 Difference]: Start difference. First operand 1234 states and 1954 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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 06:23:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:36,009 INFO L93 Difference]: Finished difference Result 3550 states and 5619 transitions. [2022-01-11 06:23:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:23:36,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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 06:23:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:36,020 INFO L225 Difference]: With dead ends: 3550 [2022-01-11 06:23:36,020 INFO L226 Difference]: Without dead ends: 2380 [2022-01-11 06:23:36,022 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 06:23:36,023 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 450 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 475 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 06:23:36,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 475 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:36,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2022-01-11 06:23:36,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2378. [2022-01-11 06:23:36,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2378 states, 2377 states have (on average 1.573832562053008) internal successors, (3741), 2377 states have internal predecessors, (3741), 0 states have call successors, (0), 0 states 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 06:23:36,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 3741 transitions. [2022-01-11 06:23:36,253 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 3741 transitions. Word has length 56 [2022-01-11 06:23:36,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:36,253 INFO L470 AbstractCegarLoop]: Abstraction has 2378 states and 3741 transitions. [2022-01-11 06:23:36,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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 06:23:36,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 3741 transitions. [2022-01-11 06:23:36,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-11 06:23:36,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:36,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:36,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:23:36,257 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:36,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:36,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1386655367, now seen corresponding path program 1 times [2022-01-11 06:23:36,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:36,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704007366] [2022-01-11 06:23:36,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:36,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:36,312 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 06:23:36,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:36,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704007366] [2022-01-11 06:23:36,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704007366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:36,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:36,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:36,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863213076] [2022-01-11 06:23:36,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:36,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:36,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:36,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:36,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:36,314 INFO L87 Difference]: Start difference. First operand 2378 states and 3741 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 06:23:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:36,785 INFO L93 Difference]: Finished difference Result 7047 states and 11084 transitions. [2022-01-11 06:23:36,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:36,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-11 06:23:36,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:36,800 INFO L225 Difference]: With dead ends: 7047 [2022-01-11 06:23:36,801 INFO L226 Difference]: Without dead ends: 4736 [2022-01-11 06:23:36,806 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 06:23:36,807 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 195 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 595 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 06:23:36,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 595 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:36,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2022-01-11 06:23:37,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 2380. [2022-01-11 06:23:37,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2379 states have (on average 1.573350147120639) internal successors, (3743), 2379 states have internal predecessors, (3743), 0 states have call successors, (0), 0 states 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 06:23:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3743 transitions. [2022-01-11 06:23:37,044 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3743 transitions. Word has length 57 [2022-01-11 06:23:37,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:37,044 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 3743 transitions. [2022-01-11 06:23:37,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 06:23:37,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3743 transitions. [2022-01-11 06:23:37,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-11 06:23:37,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:37,047 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 06:23:37,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:23:37,048 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:37,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:37,048 INFO L85 PathProgramCache]: Analyzing trace with hash -586571758, now seen corresponding path program 1 times [2022-01-11 06:23:37,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:37,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541175590] [2022-01-11 06:23:37,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:37,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:37,107 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 06:23:37,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:37,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541175590] [2022-01-11 06:23:37,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541175590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:37,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:37,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:37,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943715493] [2022-01-11 06:23:37,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:37,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:37,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:37,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:37,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:37,108 INFO L87 Difference]: Start difference. First operand 2380 states and 3743 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 06:23:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:37,362 INFO L93 Difference]: Finished difference Result 4336 states and 7025 transitions. [2022-01-11 06:23:37,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:37,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 06:23:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:37,373 INFO L225 Difference]: With dead ends: 4336 [2022-01-11 06:23:37,373 INFO L226 Difference]: Without dead ends: 3210 [2022-01-11 06:23:37,376 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 06:23:37,376 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 122 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 478 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 06:23:37,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 478 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:37,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2022-01-11 06:23:37,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3208. [2022-01-11 06:23:37,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.5974430932335517) internal successors, (5123), 3207 states have internal predecessors, (5123), 0 states have call successors, (0), 0 states 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 06:23:37,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 5123 transitions. [2022-01-11 06:23:37,630 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 5123 transitions. Word has length 58 [2022-01-11 06:23:37,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:37,630 INFO L470 AbstractCegarLoop]: Abstraction has 3208 states and 5123 transitions. [2022-01-11 06:23:37,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 06:23:37,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 5123 transitions. [2022-01-11 06:23:37,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-11 06:23:37,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:37,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:37,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:23:37,633 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:37,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:37,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1103910438, now seen corresponding path program 1 times [2022-01-11 06:23:37,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:37,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169309574] [2022-01-11 06:23:37,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:37,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:37,739 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 06:23:37,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:37,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169309574] [2022-01-11 06:23:37,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169309574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:37,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:37,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:23:37,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818816660] [2022-01-11 06:23:37,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:37,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:23:37,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:37,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:23:37,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:23:37,742 INFO L87 Difference]: Start difference. First operand 3208 states and 5123 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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 06:23:38,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:38,482 INFO L93 Difference]: Finished difference Result 12410 states and 19883 transitions. [2022-01-11 06:23:38,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:23:38,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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 06:23:38,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:38,514 INFO L225 Difference]: With dead ends: 12410 [2022-01-11 06:23:38,514 INFO L226 Difference]: Without dead ends: 9214 [2022-01-11 06:23:38,522 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 06:23:38,523 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 534 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:38,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 868 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:38,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9214 states. [2022-01-11 06:23:39,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9214 to 6214. [2022-01-11 06:23:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6214 states, 6213 states have (on average 1.5831321422823112) internal successors, (9836), 6213 states have internal predecessors, (9836), 0 states have call successors, (0), 0 states 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 06:23:39,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 9836 transitions. [2022-01-11 06:23:39,078 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 9836 transitions. Word has length 58 [2022-01-11 06:23:39,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:39,079 INFO L470 AbstractCegarLoop]: Abstraction has 6214 states and 9836 transitions. [2022-01-11 06:23:39,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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 06:23:39,079 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 9836 transitions. [2022-01-11 06:23:39,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-11 06:23:39,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:39,082 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 06:23:39,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:23:39,082 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:39,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:39,083 INFO L85 PathProgramCache]: Analyzing trace with hash 815109770, now seen corresponding path program 1 times [2022-01-11 06:23:39,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:39,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242836876] [2022-01-11 06:23:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:39,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:39,215 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 06:23:39,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:39,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242836876] [2022-01-11 06:23:39,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242836876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:39,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:39,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:39,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005102312] [2022-01-11 06:23:39,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:39,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:39,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:39,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:39,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:39,217 INFO L87 Difference]: Start difference. First operand 6214 states and 9836 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 06:23:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:40,213 INFO L93 Difference]: Finished difference Result 16890 states and 27134 transitions. [2022-01-11 06:23:40,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:40,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 06:23:40,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:40,248 INFO L225 Difference]: With dead ends: 16890 [2022-01-11 06:23:40,248 INFO L226 Difference]: Without dead ends: 11264 [2022-01-11 06:23:40,261 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 06:23:40,261 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 113 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 387 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 06:23:40,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 387 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:40,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11264 states. [2022-01-11 06:23:41,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11264 to 11166. [2022-01-11 06:23:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11166 states, 11165 states have (on average 1.5867442901925661) internal successors, (17716), 11165 states have internal predecessors, (17716), 0 states have call successors, (0), 0 states 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 06:23:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11166 states to 11166 states and 17716 transitions. [2022-01-11 06:23:41,247 INFO L78 Accepts]: Start accepts. Automaton has 11166 states and 17716 transitions. Word has length 58 [2022-01-11 06:23:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:41,248 INFO L470 AbstractCegarLoop]: Abstraction has 11166 states and 17716 transitions. [2022-01-11 06:23:41,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 06:23:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 11166 states and 17716 transitions. [2022-01-11 06:23:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 06:23:41,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:41,251 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 06:23:41,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:23:41,252 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:41,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash 162901108, now seen corresponding path program 1 times [2022-01-11 06:23:41,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:41,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292254697] [2022-01-11 06:23:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:41,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:41,330 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 06:23:41,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:41,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292254697] [2022-01-11 06:23:41,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292254697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:41,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:41,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:23:41,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358778700] [2022-01-11 06:23:41,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:41,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:23:41,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:41,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:23:41,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:23:41,333 INFO L87 Difference]: Start difference. First operand 11166 states and 17716 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 06:23:43,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:43,402 INFO L93 Difference]: Finished difference Result 32362 states and 51390 transitions. [2022-01-11 06:23:43,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:23:43,402 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 06:23:43,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:43,487 INFO L225 Difference]: With dead ends: 32362 [2022-01-11 06:23:43,487 INFO L226 Difference]: Without dead ends: 21360 [2022-01-11 06:23:43,521 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 06:23:43,522 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 427 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:43,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 436 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:43,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21360 states. [2022-01-11 06:23:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21360 to 21358. [2022-01-11 06:23:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21358 states, 21357 states have (on average 1.5756894694947792) internal successors, (33652), 21357 states have internal predecessors, (33652), 0 states have call successors, (0), 0 states 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 06:23:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21358 states to 21358 states and 33652 transitions. [2022-01-11 06:23:45,493 INFO L78 Accepts]: Start accepts. Automaton has 21358 states and 33652 transitions. Word has length 60 [2022-01-11 06:23:45,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:45,494 INFO L470 AbstractCegarLoop]: Abstraction has 21358 states and 33652 transitions. [2022-01-11 06:23:45,494 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 06:23:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 21358 states and 33652 transitions. [2022-01-11 06:23:45,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 06:23:45,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:45,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:45,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:23:45,500 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:45,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1534762736, now seen corresponding path program 1 times [2022-01-11 06:23:45,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:45,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473062477] [2022-01-11 06:23:45,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:45,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:45,541 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 06:23:45,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:45,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473062477] [2022-01-11 06:23:45,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473062477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:45,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:45,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:45,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912442381] [2022-01-11 06:23:45,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:45,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:45,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:45,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:45,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:45,543 INFO L87 Difference]: Start difference. First operand 21358 states and 33652 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:23:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:49,315 INFO L93 Difference]: Finished difference Result 63186 states and 99814 transitions. [2022-01-11 06:23:49,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:49,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-11 06:23:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:49,425 INFO L225 Difference]: With dead ends: 63186 [2022-01-11 06:23:49,425 INFO L226 Difference]: Without dead ends: 42480 [2022-01-11 06:23:49,465 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 06:23:49,466 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 167 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 567 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 06:23:49,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 567 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:49,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42480 states. [2022-01-11 06:23:51,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42480 to 21390. [2022-01-11 06:23:51,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21390 states, 21389 states have (on average 1.574828182710739) internal successors, (33684), 21389 states have internal predecessors, (33684), 0 states have call successors, (0), 0 states 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 06:23:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21390 states to 21390 states and 33684 transitions. [2022-01-11 06:23:51,824 INFO L78 Accepts]: Start accepts. Automaton has 21390 states and 33684 transitions. Word has length 61 [2022-01-11 06:23:51,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:51,824 INFO L470 AbstractCegarLoop]: Abstraction has 21390 states and 33684 transitions. [2022-01-11 06:23:51,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:23:51,825 INFO L276 IsEmpty]: Start isEmpty. Operand 21390 states and 33684 transitions. [2022-01-11 06:23:51,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 06:23:51,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:51,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:51,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:23:51,831 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:51,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:51,832 INFO L85 PathProgramCache]: Analyzing trace with hash -485072679, now seen corresponding path program 1 times [2022-01-11 06:23:51,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:51,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21307951] [2022-01-11 06:23:51,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:51,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:51,903 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 06:23:51,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:51,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21307951] [2022-01-11 06:23:51,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21307951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:51,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:51,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:51,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184764357] [2022-01-11 06:23:51,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:51,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:51,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:51,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:51,905 INFO L87 Difference]: Start difference. First operand 21390 states and 33684 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 06:23:54,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:54,600 INFO L93 Difference]: Finished difference Result 40546 states and 64582 transitions. [2022-01-11 06:23:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:54,601 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 06:23:54,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:54,653 INFO L225 Difference]: With dead ends: 40546 [2022-01-11 06:23:54,653 INFO L226 Difference]: Without dead ends: 29648 [2022-01-11 06:23:54,675 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 06:23:54,676 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 112 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 434 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 06:23:54,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 434 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29648 states. [2022-01-11 06:23:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29648 to 29646. [2022-01-11 06:23:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29646 states, 29645 states have (on average 1.5777365491651205) internal successors, (46772), 29645 states have internal predecessors, (46772), 0 states have call successors, (0), 0 states 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 06:23:57,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29646 states to 29646 states and 46772 transitions. [2022-01-11 06:23:57,513 INFO L78 Accepts]: Start accepts. Automaton has 29646 states and 46772 transitions. Word has length 62 [2022-01-11 06:23:57,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:57,514 INFO L470 AbstractCegarLoop]: Abstraction has 29646 states and 46772 transitions. [2022-01-11 06:23:57,514 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 06:23:57,514 INFO L276 IsEmpty]: Start isEmpty. Operand 29646 states and 46772 transitions. [2022-01-11 06:23:57,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 06:23:57,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:57,519 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 06:23:57,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:23:57,519 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:57,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:57,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1027466734, now seen corresponding path program 1 times [2022-01-11 06:23:57,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:57,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926361565] [2022-01-11 06:23:57,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:57,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:23:57,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:57,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926361565] [2022-01-11 06:23:57,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926361565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:57,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:57,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:23:57,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81881119] [2022-01-11 06:23:57,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:57,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:23:57,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:57,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:23:57,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:23:57,639 INFO L87 Difference]: Start difference. First operand 29646 states and 46772 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:06,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:24:06,245 INFO L93 Difference]: Finished difference Result 115103 states and 182028 transitions. [2022-01-11 06:24:06,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:24:06,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-11 06:24:06,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:24:06,496 INFO L225 Difference]: With dead ends: 115103 [2022-01-11 06:24:06,496 INFO L226 Difference]: Without dead ends: 85725 [2022-01-11 06:24:06,542 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 06:24:06,543 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 510 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:24:06,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 857 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:24:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85725 states. [2022-01-11 06:24:12,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85725 to 57193. [2022-01-11 06:24:12,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57193 states, 57192 states have (on average 1.5654112463281578) internal successors, (89529), 57192 states have internal predecessors, (89529), 0 states have call successors, (0), 0 states 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 06:24:13,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57193 states to 57193 states and 89529 transitions. [2022-01-11 06:24:13,147 INFO L78 Accepts]: Start accepts. Automaton has 57193 states and 89529 transitions. Word has length 62 [2022-01-11 06:24:13,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:24:13,148 INFO L470 AbstractCegarLoop]: Abstraction has 57193 states and 89529 transitions. [2022-01-11 06:24:13,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:13,148 INFO L276 IsEmpty]: Start isEmpty. Operand 57193 states and 89529 transitions. [2022-01-11 06:24:13,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 06:24:13,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:24:13,156 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 06:24:13,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:24:13,156 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:24:13,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:24:13,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1442331827, now seen corresponding path program 1 times [2022-01-11 06:24:13,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:24:13,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101321773] [2022-01-11 06:24:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:24:13,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:24:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:24:13,314 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 06:24:13,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:24:13,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101321773] [2022-01-11 06:24:13,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101321773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:24:13,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:24:13,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:24:13,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269779664] [2022-01-11 06:24:13,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:24:13,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:24:13,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:24:13,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:24:13,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:24:13,315 INFO L87 Difference]: Start difference. First operand 57193 states and 89529 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)