/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/combinations/Problem05_label44+token_ring.07.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 07:07:10,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 07:07:10,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 07:07:10,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 07:07:10,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 07:07:10,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 07:07:10,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 07:07:10,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 07:07:10,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 07:07:10,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 07:07:10,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 07:07:10,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 07:07:10,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 07:07:10,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 07:07:10,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 07:07:10,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 07:07:10,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 07:07:10,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 07:07:10,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 07:07:10,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 07:07:10,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 07:07:10,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 07:07:10,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 07:07:10,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 07:07:10,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 07:07:10,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 07:07:10,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 07:07:10,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 07:07:10,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 07:07:10,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 07:07:10,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 07:07:10,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 07:07:10,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 07:07:10,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 07:07:10,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 07:07:10,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 07:07:10,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 07:07:10,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 07:07:10,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 07:07:10,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 07:07:10,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 07:07:10,916 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 07:07:10,941 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 07:07:10,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 07:07:10,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 07:07:10,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 07:07:10,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 07:07:10,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 07:07:10,944 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 07:07:10,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 07:07:10,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 07:07:10,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 07:07:10,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 07:07:10,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 07:07:10,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 07:07:10,946 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 07:07:10,946 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 07:07:10,946 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 07:07:10,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 07:07:10,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 07:07:10,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 07:07:10,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 07:07:10,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 07:07:10,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:07:10,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 07:07:10,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 07:07:10,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 07:07:10,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 07:07:10,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 07:07:10,948 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 07:07:10,948 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 07:07:10,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 07:07:10,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 07:07:10,948 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 07:07:10,950 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 07:07:10,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 07:07:11,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 07:07:11,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 07:07:11,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 07:07:11,258 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 07:07:11,258 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 07:07:11,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.07.cil-1.c [2022-01-11 07:07:11,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ff2aa23/9b9c6a9976974715a20e34802f973a3d/FLAG230d3ad2c [2022-01-11 07:07:12,211 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 07:07:12,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.07.cil-1.c [2022-01-11 07:07:12,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ff2aa23/9b9c6a9976974715a20e34802f973a3d/FLAG230d3ad2c [2022-01-11 07:07:12,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ff2aa23/9b9c6a9976974715a20e34802f973a3d [2022-01-11 07:07:12,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 07:07:12,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 07:07:12,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 07:07:12,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 07:07:12,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 07:07:12,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:07:12" (1/1) ... [2022-01-11 07:07:12,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30383b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:07:12, skipping insertion in model container [2022-01-11 07:07:12,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:07:12" (1/1) ... [2022-01-11 07:07:12,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 07:07:12,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 07:07:13,995 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.07.cil-1.c[377340,377353] [2022-01-11 07:07:14,029 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.07.cil-1.c[383339,383352] [2022-01-11 07:07:14,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:07:14,283 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 07:07:15,010 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.07.cil-1.c[377340,377353] [2022-01-11 07:07:15,018 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.07.cil-1.c[383339,383352] [2022-01-11 07:07:15,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:07:15,099 INFO L208 MainTranslator]: Completed translation [2022-01-11 07:07:15,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:07:15 WrapperNode [2022-01-11 07:07:15,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 07:07:15,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 07:07:15,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 07:07:15,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 07:07:15,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:07:15" (1/1) ... [2022-01-11 07:07:15,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:07:15" (1/1) ... [2022-01-11 07:07:15,616 INFO L137 Inliner]: procedures = 59, calls = 62, calls flagged for inlining = 57, calls inlined = 144, statements flattened = 14324 [2022-01-11 07:07:15,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 07:07:15,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 07:07:15,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 07:07:15,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 07:07:15,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:07:15" (1/1) ... [2022-01-11 07:07:15,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:07:15" (1/1) ... [2022-01-11 07:07:15,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:07:15" (1/1) ... [2022-01-11 07:07:15,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:07:15" (1/1) ... [2022-01-11 07:07:15,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:07:15" (1/1) ... [2022-01-11 07:07:15,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:07:15" (1/1) ... [2022-01-11 07:07:15,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:07:15" (1/1) ... [2022-01-11 07:07:16,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 07:07:16,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 07:07:16,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 07:07:16,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 07:07:16,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:07:15" (1/1) ... [2022-01-11 07:07:16,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:07:16,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 07:07:16,213 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 07:07:16,219 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 07:07:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 07:07:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 07:07:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 07:07:16,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 07:07:16,398 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 07:07:16,399 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 07:07:24,654 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 07:07:24,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 07:07:24,687 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-11 07:07:24,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:07:24 BoogieIcfgContainer [2022-01-11 07:07:24,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 07:07:24,692 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 07:07:24,692 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 07:07:24,693 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 07:07:24,695 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:07:24" (1/1) ... [2022-01-11 07:07:26,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:07:26 BasicIcfg [2022-01-11 07:07:26,173 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 07:07:26,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 07:07:26,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 07:07:26,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 07:07:26,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 07:07:12" (1/4) ... [2022-01-11 07:07:26,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e42856b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:07:26, skipping insertion in model container [2022-01-11 07:07:26,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:07:15" (2/4) ... [2022-01-11 07:07:26,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e42856b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:07:26, skipping insertion in model container [2022-01-11 07:07:26,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:07:24" (3/4) ... [2022-01-11 07:07:26,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e42856b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 07:07:26, skipping insertion in model container [2022-01-11 07:07:26,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:07:26" (4/4) ... [2022-01-11 07:07:26,181 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.07.cil-1.cTransformedIcfg [2022-01-11 07:07:26,187 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 07:07:26,188 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 07:07:26,236 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 07:07:26,242 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 07:07:26,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 07:07:26,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 3020 states, 3017 states have (on average 1.7742790851839576) internal successors, (5353), 3019 states have internal predecessors, (5353), 0 states have call successors, (0), 0 states 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 07:07:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:26,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:26,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:26,461 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:26,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:26,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1298378125, now seen corresponding path program 1 times [2022-01-11 07:07:26,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:26,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577752218] [2022-01-11 07:07:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:26,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:26,750 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 07:07:26,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:26,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577752218] [2022-01-11 07:07:26,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577752218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:26,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:26,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:26,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877624824] [2022-01-11 07:07:26,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:26,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:26,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:26,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:26,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:26,798 INFO L87 Difference]: Start difference. First operand has 3020 states, 3017 states have (on average 1.7742790851839576) internal successors, (5353), 3019 states have internal predecessors, (5353), 0 states have call successors, (0), 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 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:27,148 INFO L93 Difference]: Finished difference Result 6700 states and 11699 transitions. [2022-01-11 07:07:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:27,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:27,182 INFO L225 Difference]: With dead ends: 6700 [2022-01-11 07:07:27,183 INFO L226 Difference]: Without dead ends: 3624 [2022-01-11 07:07:27,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:27,201 INFO L933 BasicCegarLoop]: 5262 mSDtfsCounter, 5166 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 6336 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:27,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5166 Valid, 6336 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2022-01-11 07:07:27,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3622. [2022-01-11 07:07:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7096685082872929) internal successors, (6189), 3621 states have internal predecessors, (6189), 0 states have call successors, (0), 0 states 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 07:07:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6189 transitions. [2022-01-11 07:07:27,395 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6189 transitions. Word has length 110 [2022-01-11 07:07:27,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:27,396 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6189 transitions. [2022-01-11 07:07:27,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:27,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6189 transitions. [2022-01-11 07:07:27,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:27,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:27,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:27,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 07:07:27,401 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:27,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:27,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1120812461, now seen corresponding path program 1 times [2022-01-11 07:07:27,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:27,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571194955] [2022-01-11 07:07:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:27,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:27,556 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 07:07:27,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:27,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571194955] [2022-01-11 07:07:27,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571194955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:27,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:27,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:27,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710071441] [2022-01-11 07:07:27,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:27,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:27,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:27,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:27,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:27,560 INFO L87 Difference]: Start difference. First operand 3622 states and 6189 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:27,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:27,672 INFO L93 Difference]: Finished difference Result 5108 states and 8396 transitions. [2022-01-11 07:07:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:27,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:27,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:27,687 INFO L225 Difference]: With dead ends: 5108 [2022-01-11 07:07:27,689 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 07:07:27,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:27,695 INFO L933 BasicCegarLoop]: 5189 mSDtfsCounter, 5179 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5179 SdHoareTripleChecker+Valid, 5189 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:27,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5179 Valid, 5189 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:27,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 07:07:27,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 07:07:27,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7074585635359116) internal successors, (6181), 3621 states have internal predecessors, (6181), 0 states have call successors, (0), 0 states 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 07:07:27,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6181 transitions. [2022-01-11 07:07:27,802 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6181 transitions. Word has length 110 [2022-01-11 07:07:27,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:27,803 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6181 transitions. [2022-01-11 07:07:27,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:27,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6181 transitions. [2022-01-11 07:07:27,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:27,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:27,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:27,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 07:07:27,816 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:27,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:27,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1796505070, now seen corresponding path program 1 times [2022-01-11 07:07:27,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:27,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537283157] [2022-01-11 07:07:27,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:27,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:27,926 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 07:07:27,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:27,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537283157] [2022-01-11 07:07:27,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537283157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:27,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:27,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:27,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823928053] [2022-01-11 07:07:27,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:27,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:27,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:27,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:27,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:27,931 INFO L87 Difference]: Start difference. First operand 3622 states and 6181 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:28,024 INFO L93 Difference]: Finished difference Result 5107 states and 8379 transitions. [2022-01-11 07:07:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:28,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:28,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:28,041 INFO L225 Difference]: With dead ends: 5107 [2022-01-11 07:07:28,041 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 07:07:28,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:28,053 INFO L933 BasicCegarLoop]: 5184 mSDtfsCounter, 5173 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5173 SdHoareTripleChecker+Valid, 5184 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:28,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5173 Valid, 5184 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:28,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 07:07:28,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 07:07:28,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7052486187845304) internal successors, (6173), 3621 states have internal predecessors, (6173), 0 states have call successors, (0), 0 states 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 07:07:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6173 transitions. [2022-01-11 07:07:28,162 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6173 transitions. Word has length 110 [2022-01-11 07:07:28,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:28,162 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6173 transitions. [2022-01-11 07:07:28,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:28,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6173 transitions. [2022-01-11 07:07:28,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:28,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:28,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:28,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 07:07:28,165 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:28,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:28,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1680119310, now seen corresponding path program 1 times [2022-01-11 07:07:28,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:28,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531989411] [2022-01-11 07:07:28,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:28,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:28,251 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 07:07:28,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:28,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531989411] [2022-01-11 07:07:28,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531989411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:28,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:28,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:28,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696223065] [2022-01-11 07:07:28,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:28,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:28,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:28,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:28,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:28,254 INFO L87 Difference]: Start difference. First operand 3622 states and 6173 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:28,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:28,350 INFO L93 Difference]: Finished difference Result 5105 states and 8360 transitions. [2022-01-11 07:07:28,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:28,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:28,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:28,365 INFO L225 Difference]: With dead ends: 5105 [2022-01-11 07:07:28,365 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 07:07:28,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:28,376 INFO L933 BasicCegarLoop]: 5179 mSDtfsCounter, 5166 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 5179 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:28,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5166 Valid, 5179 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:28,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 07:07:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 07:07:28,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7030386740331491) internal successors, (6165), 3621 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states 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 07:07:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6165 transitions. [2022-01-11 07:07:28,491 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6165 transitions. Word has length 110 [2022-01-11 07:07:28,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:28,492 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6165 transitions. [2022-01-11 07:07:28,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:28,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6165 transitions. [2022-01-11 07:07:28,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:28,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:28,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:28,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 07:07:28,494 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:28,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:28,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1667484114, now seen corresponding path program 1 times [2022-01-11 07:07:28,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:28,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077914105] [2022-01-11 07:07:28,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:28,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:28,571 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 07:07:28,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:28,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077914105] [2022-01-11 07:07:28,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077914105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:28,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:28,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:28,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241201879] [2022-01-11 07:07:28,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:28,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:28,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:28,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:28,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:28,574 INFO L87 Difference]: Start difference. First operand 3622 states and 6165 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:28,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:28,689 INFO L93 Difference]: Finished difference Result 5104 states and 8343 transitions. [2022-01-11 07:07:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:28,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:28,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:28,705 INFO L225 Difference]: With dead ends: 5104 [2022-01-11 07:07:28,705 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 07:07:28,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:28,709 INFO L933 BasicCegarLoop]: 5174 mSDtfsCounter, 5160 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5160 SdHoareTripleChecker+Valid, 5174 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:28,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5160 Valid, 5174 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:28,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 07:07:28,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 07:07:28,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7008287292817679) internal successors, (6157), 3621 states have internal predecessors, (6157), 0 states have call successors, (0), 0 states 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 07:07:28,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6157 transitions. [2022-01-11 07:07:28,846 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6157 transitions. Word has length 110 [2022-01-11 07:07:28,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:28,846 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6157 transitions. [2022-01-11 07:07:28,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:28,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6157 transitions. [2022-01-11 07:07:28,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:28,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:28,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:28,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 07:07:28,849 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:28,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:28,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1688211982, now seen corresponding path program 1 times [2022-01-11 07:07:28,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:28,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6961097] [2022-01-11 07:07:28,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:28,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:28,901 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 07:07:28,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:28,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6961097] [2022-01-11 07:07:28,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6961097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:28,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:28,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:28,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663396567] [2022-01-11 07:07:28,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:28,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:28,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:28,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:28,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:28,904 INFO L87 Difference]: Start difference. First operand 3622 states and 6157 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:29,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:29,061 INFO L93 Difference]: Finished difference Result 5103 states and 8326 transitions. [2022-01-11 07:07:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:29,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:29,076 INFO L225 Difference]: With dead ends: 5103 [2022-01-11 07:07:29,076 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 07:07:29,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:29,080 INFO L933 BasicCegarLoop]: 5169 mSDtfsCounter, 5154 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 5169 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:29,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5154 Valid, 5169 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:29,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 07:07:29,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 07:07:29,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.6986187845303868) internal successors, (6149), 3621 states have internal predecessors, (6149), 0 states have call successors, (0), 0 states 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 07:07:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6149 transitions. [2022-01-11 07:07:29,190 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6149 transitions. Word has length 110 [2022-01-11 07:07:29,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:29,191 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6149 transitions. [2022-01-11 07:07:29,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:29,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6149 transitions. [2022-01-11 07:07:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:29,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:29,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:29,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 07:07:29,193 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:29,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash 549534254, now seen corresponding path program 1 times [2022-01-11 07:07:29,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:29,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989013548] [2022-01-11 07:07:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:29,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:29,241 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 07:07:29,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:29,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989013548] [2022-01-11 07:07:29,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989013548] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:29,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:29,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:29,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69298435] [2022-01-11 07:07:29,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:29,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:29,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:29,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:29,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:29,243 INFO L87 Difference]: Start difference. First operand 3622 states and 6149 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:29,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:29,373 INFO L93 Difference]: Finished difference Result 5101 states and 8307 transitions. [2022-01-11 07:07:29,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:29,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:29,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:29,399 INFO L225 Difference]: With dead ends: 5101 [2022-01-11 07:07:29,399 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 07:07:29,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:29,405 INFO L933 BasicCegarLoop]: 5144 mSDtfsCounter, 5055 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5055 SdHoareTripleChecker+Valid, 5222 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:29,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5055 Valid, 5222 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 07:07:29,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 07:07:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.6914364640883979) internal successors, (6123), 3621 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states 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 07:07:29,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6123 transitions. [2022-01-11 07:07:29,525 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6123 transitions. Word has length 110 [2022-01-11 07:07:29,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:29,526 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6123 transitions. [2022-01-11 07:07:29,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:29,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6123 transitions. [2022-01-11 07:07:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:29,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:29,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:29,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 07:07:29,528 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:29,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:29,529 INFO L85 PathProgramCache]: Analyzing trace with hash 108621773, now seen corresponding path program 1 times [2022-01-11 07:07:29,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:29,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078500464] [2022-01-11 07:07:29,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:29,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:29,583 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 07:07:29,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:29,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078500464] [2022-01-11 07:07:29,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078500464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:29,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:29,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:29,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841545411] [2022-01-11 07:07:29,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:29,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:29,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:29,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:29,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:29,585 INFO L87 Difference]: Start difference. First operand 3622 states and 6123 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:29,704 INFO L93 Difference]: Finished difference Result 5100 states and 8254 transitions. [2022-01-11 07:07:29,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:29,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:29,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:29,715 INFO L225 Difference]: With dead ends: 5100 [2022-01-11 07:07:29,715 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 07:07:29,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:29,719 INFO L933 BasicCegarLoop]: 5129 mSDtfsCounter, 5040 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5040 SdHoareTripleChecker+Valid, 5206 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:29,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5040 Valid, 5206 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:29,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 07:07:29,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 07:07:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.684254143646409) internal successors, (6097), 3621 states have internal predecessors, (6097), 0 states have call successors, (0), 0 states 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 07:07:29,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6097 transitions. [2022-01-11 07:07:29,840 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6097 transitions. Word has length 110 [2022-01-11 07:07:29,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:29,840 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6097 transitions. [2022-01-11 07:07:29,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:29,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6097 transitions. [2022-01-11 07:07:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:29,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:29,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:29,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 07:07:29,841 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:29,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash -953709460, now seen corresponding path program 1 times [2022-01-11 07:07:29,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:29,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861968613] [2022-01-11 07:07:29,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:29,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:29,890 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 07:07:29,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:29,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861968613] [2022-01-11 07:07:29,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861968613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:29,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:29,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:29,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983563568] [2022-01-11 07:07:29,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:29,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:29,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:29,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:29,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:29,893 INFO L87 Difference]: Start difference. First operand 3622 states and 6097 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:30,005 INFO L93 Difference]: Finished difference Result 5099 states and 8201 transitions. [2022-01-11 07:07:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:30,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:30,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:30,014 INFO L225 Difference]: With dead ends: 5099 [2022-01-11 07:07:30,014 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 07:07:30,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:30,020 INFO L933 BasicCegarLoop]: 5114 mSDtfsCounter, 5025 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5025 SdHoareTripleChecker+Valid, 5190 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:30,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5025 Valid, 5190 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:30,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 07:07:30,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 07:07:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.67707182320442) internal successors, (6071), 3621 states have internal predecessors, (6071), 0 states have call successors, (0), 0 states 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 07:07:30,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6071 transitions. [2022-01-11 07:07:30,131 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6071 transitions. Word has length 110 [2022-01-11 07:07:30,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:30,132 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6071 transitions. [2022-01-11 07:07:30,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:30,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6071 transitions. [2022-01-11 07:07:30,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:30,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:30,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:30,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 07:07:30,136 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:30,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:30,137 INFO L85 PathProgramCache]: Analyzing trace with hash -914206581, now seen corresponding path program 1 times [2022-01-11 07:07:30,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:30,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782749339] [2022-01-11 07:07:30,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:30,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:30,180 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 07:07:30,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:30,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782749339] [2022-01-11 07:07:30,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782749339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:30,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:30,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:30,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864508283] [2022-01-11 07:07:30,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:30,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:30,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:30,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:30,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:30,182 INFO L87 Difference]: Start difference. First operand 3622 states and 6071 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:30,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:30,289 INFO L93 Difference]: Finished difference Result 5098 states and 8148 transitions. [2022-01-11 07:07:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:30,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:30,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:30,298 INFO L225 Difference]: With dead ends: 5098 [2022-01-11 07:07:30,298 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 07:07:30,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:30,302 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5010 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5010 SdHoareTripleChecker+Valid, 5174 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:30,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5010 Valid, 5174 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:30,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 07:07:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 07:07:30,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.669889502762431) internal successors, (6045), 3621 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states 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 07:07:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6045 transitions. [2022-01-11 07:07:30,411 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6045 transitions. Word has length 110 [2022-01-11 07:07:30,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:30,411 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6045 transitions. [2022-01-11 07:07:30,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6045 transitions. [2022-01-11 07:07:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:30,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:30,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:30,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 07:07:30,413 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:30,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:30,414 INFO L85 PathProgramCache]: Analyzing trace with hash 797821866, now seen corresponding path program 1 times [2022-01-11 07:07:30,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:30,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992216723] [2022-01-11 07:07:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:30,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:30,448 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 07:07:30,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:30,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992216723] [2022-01-11 07:07:30,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992216723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:30,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:30,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:30,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380937859] [2022-01-11 07:07:30,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:30,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:30,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:30,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:30,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:30,450 INFO L87 Difference]: Start difference. First operand 3622 states and 6045 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:30,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:30,615 INFO L93 Difference]: Finished difference Result 5097 states and 8095 transitions. [2022-01-11 07:07:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:30,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:30,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:30,623 INFO L225 Difference]: With dead ends: 5097 [2022-01-11 07:07:30,623 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 07:07:30,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:30,626 INFO L933 BasicCegarLoop]: 5084 mSDtfsCounter, 4995 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4995 SdHoareTripleChecker+Valid, 5158 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:30,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4995 Valid, 5158 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:30,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 07:07:30,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 07:07:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.662707182320442) internal successors, (6019), 3621 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states 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 07:07:30,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6019 transitions. [2022-01-11 07:07:30,730 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6019 transitions. Word has length 110 [2022-01-11 07:07:30,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:30,730 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6019 transitions. [2022-01-11 07:07:30,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:30,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6019 transitions. [2022-01-11 07:07:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:30,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:30,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:30,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 07:07:30,732 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:30,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:30,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1564287415, now seen corresponding path program 1 times [2022-01-11 07:07:30,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:30,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884721609] [2022-01-11 07:07:30,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:30,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:30,770 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 07:07:30,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:30,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884721609] [2022-01-11 07:07:30,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884721609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:30,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:30,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:30,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143363386] [2022-01-11 07:07:30,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:30,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:30,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:30,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:30,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:30,772 INFO L87 Difference]: Start difference. First operand 3622 states and 6019 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:30,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:30,888 INFO L93 Difference]: Finished difference Result 5096 states and 8042 transitions. [2022-01-11 07:07:30,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:30,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:30,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:30,896 INFO L225 Difference]: With dead ends: 5096 [2022-01-11 07:07:30,896 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 07:07:30,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:30,899 INFO L933 BasicCegarLoop]: 5069 mSDtfsCounter, 4980 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4980 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:30,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4980 Valid, 5142 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:30,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 07:07:30,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 07:07:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.655524861878453) internal successors, (5993), 3621 states have internal predecessors, (5993), 0 states have call successors, (0), 0 states 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 07:07:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 5993 transitions. [2022-01-11 07:07:31,013 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 5993 transitions. Word has length 110 [2022-01-11 07:07:31,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:31,013 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 5993 transitions. [2022-01-11 07:07:31,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:31,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 5993 transitions. [2022-01-11 07:07:31,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:31,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:31,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:31,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 07:07:31,015 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:31,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:31,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2115012632, now seen corresponding path program 1 times [2022-01-11 07:07:31,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:31,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467111198] [2022-01-11 07:07:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:31,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:07:31,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:31,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467111198] [2022-01-11 07:07:31,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467111198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:31,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:31,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:31,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785865806] [2022-01-11 07:07:31,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:31,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:31,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:31,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:31,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:31,054 INFO L87 Difference]: Start difference. First operand 3622 states and 5993 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:31,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:31,166 INFO L93 Difference]: Finished difference Result 5095 states and 7989 transitions. [2022-01-11 07:07:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:31,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:31,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:31,175 INFO L225 Difference]: With dead ends: 5095 [2022-01-11 07:07:31,175 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 07:07:31,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:31,180 INFO L933 BasicCegarLoop]: 5054 mSDtfsCounter, 4965 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:31,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4965 Valid, 5126 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:31,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 07:07:31,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 07:07:31,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.648342541436464) internal successors, (5967), 3621 states have internal predecessors, (5967), 0 states have call successors, (0), 0 states 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 07:07:31,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 5967 transitions. [2022-01-11 07:07:31,297 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 5967 transitions. Word has length 110 [2022-01-11 07:07:31,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:31,297 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 5967 transitions. [2022-01-11 07:07:31,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:31,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 5967 transitions. [2022-01-11 07:07:31,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:31,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:31,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:31,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 07:07:31,299 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:31,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:31,300 INFO L85 PathProgramCache]: Analyzing trace with hash -178874105, now seen corresponding path program 1 times [2022-01-11 07:07:31,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:31,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854727109] [2022-01-11 07:07:31,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:31,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:31,335 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 07:07:31,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:31,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854727109] [2022-01-11 07:07:31,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854727109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:31,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:31,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:31,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519511844] [2022-01-11 07:07:31,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:31,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:31,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:31,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:31,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:31,337 INFO L87 Difference]: Start difference. First operand 3622 states and 5967 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:31,448 INFO L93 Difference]: Finished difference Result 5094 states and 7936 transitions. [2022-01-11 07:07:31,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:31,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:31,456 INFO L225 Difference]: With dead ends: 5094 [2022-01-11 07:07:31,456 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 07:07:31,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:31,459 INFO L933 BasicCegarLoop]: 5039 mSDtfsCounter, 4950 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4950 SdHoareTripleChecker+Valid, 5110 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:31,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4950 Valid, 5110 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:31,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 07:07:31,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 07:07:31,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.6411602209944751) internal successors, (5941), 3621 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states 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 07:07:31,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 5941 transitions. [2022-01-11 07:07:31,562 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 5941 transitions. Word has length 110 [2022-01-11 07:07:31,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:31,562 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 5941 transitions. [2022-01-11 07:07:31,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:31,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 5941 transitions. [2022-01-11 07:07:31,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:31,564 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:31,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:31,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 07:07:31,564 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:31,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:31,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1282928346, now seen corresponding path program 1 times [2022-01-11 07:07:31,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:31,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69240379] [2022-01-11 07:07:31,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:31,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:31,630 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 07:07:31,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:31,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69240379] [2022-01-11 07:07:31,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69240379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:31,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:31,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:07:31,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270256282] [2022-01-11 07:07:31,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:31,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:07:31,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:31,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:07:31,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:07:31,632 INFO L87 Difference]: Start difference. First operand 3622 states and 5941 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:31,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:31,907 INFO L93 Difference]: Finished difference Result 5776 states and 8827 transitions. [2022-01-11 07:07:31,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:07:31,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:31,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:31,918 INFO L225 Difference]: With dead ends: 5776 [2022-01-11 07:07:31,918 INFO L226 Difference]: Without dead ends: 4318 [2022-01-11 07:07:31,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:07:31,923 INFO L933 BasicCegarLoop]: 5128 mSDtfsCounter, 2950 mSDsluCounter, 13365 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2950 SdHoareTripleChecker+Valid, 18493 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:31,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2950 Valid, 18493 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:07:31,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4318 states. [2022-01-11 07:07:32,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4318 to 3628. [2022-01-11 07:07:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3626 states have (on average 1.635135135135135) internal successors, (5929), 3627 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states 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 07:07:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 5929 transitions. [2022-01-11 07:07:32,059 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 5929 transitions. Word has length 110 [2022-01-11 07:07:32,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:32,060 INFO L470 AbstractCegarLoop]: Abstraction has 3628 states and 5929 transitions. [2022-01-11 07:07:32,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:32,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 5929 transitions. [2022-01-11 07:07:32,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:32,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:32,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:32,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 07:07:32,061 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:32,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:32,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1529241433, now seen corresponding path program 1 times [2022-01-11 07:07:32,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:32,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087631460] [2022-01-11 07:07:32,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:32,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:32,116 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 07:07:32,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:32,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087631460] [2022-01-11 07:07:32,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087631460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:32,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:32,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:07:32,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501560879] [2022-01-11 07:07:32,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:32,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:07:32,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:32,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:07:32,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:07:32,120 INFO L87 Difference]: Start difference. First operand 3628 states and 5929 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:32,527 INFO L93 Difference]: Finished difference Result 6245 states and 9385 transitions. [2022-01-11 07:07:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:07:32,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:32,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:32,537 INFO L225 Difference]: With dead ends: 6245 [2022-01-11 07:07:32,537 INFO L226 Difference]: Without dead ends: 4816 [2022-01-11 07:07:32,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:07:32,543 INFO L933 BasicCegarLoop]: 5026 mSDtfsCounter, 2342 mSDsluCounter, 14517 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 19543 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:32,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2342 Valid, 19543 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:07:32,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4816 states. [2022-01-11 07:07:32,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4816 to 3634. [2022-01-11 07:07:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3632 states have (on average 1.6291299559471366) internal successors, (5917), 3633 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states 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 07:07:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5917 transitions. [2022-01-11 07:07:32,704 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5917 transitions. Word has length 110 [2022-01-11 07:07:32,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:32,705 INFO L470 AbstractCegarLoop]: Abstraction has 3634 states and 5917 transitions. [2022-01-11 07:07:32,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:32,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5917 transitions. [2022-01-11 07:07:32,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:32,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:32,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:32,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 07:07:32,707 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:32,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:32,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1843042280, now seen corresponding path program 1 times [2022-01-11 07:07:32,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:32,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18743350] [2022-01-11 07:07:32,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:32,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:32,776 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 07:07:32,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:32,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18743350] [2022-01-11 07:07:32,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18743350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:32,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:32,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:07:32,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942764543] [2022-01-11 07:07:32,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:32,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:07:32,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:32,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:07:32,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:07:32,778 INFO L87 Difference]: Start difference. First operand 3634 states and 5917 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:33,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:33,121 INFO L93 Difference]: Finished difference Result 6354 states and 9471 transitions. [2022-01-11 07:07:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:07:33,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:33,132 INFO L225 Difference]: With dead ends: 6354 [2022-01-11 07:07:33,132 INFO L226 Difference]: Without dead ends: 4926 [2022-01-11 07:07:33,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:07:33,137 INFO L933 BasicCegarLoop]: 4998 mSDtfsCounter, 2206 mSDsluCounter, 14726 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2206 SdHoareTripleChecker+Valid, 19724 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:33,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2206 Valid, 19724 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:07:33,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4926 states. [2022-01-11 07:07:33,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4926 to 3640. [2022-01-11 07:07:33,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3638 states have (on average 1.6231445849367785) internal successors, (5905), 3639 states have internal predecessors, (5905), 0 states have call successors, (0), 0 states 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 07:07:33,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 5905 transitions. [2022-01-11 07:07:33,311 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 5905 transitions. Word has length 110 [2022-01-11 07:07:33,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:33,312 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 5905 transitions. [2022-01-11 07:07:33,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:33,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 5905 transitions. [2022-01-11 07:07:33,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:33,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:33,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:33,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 07:07:33,313 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:33,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:33,314 INFO L85 PathProgramCache]: Analyzing trace with hash -340634647, now seen corresponding path program 1 times [2022-01-11 07:07:33,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:33,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397411869] [2022-01-11 07:07:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:33,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:33,370 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 07:07:33,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:33,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397411869] [2022-01-11 07:07:33,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397411869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:33,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:33,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:33,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27155795] [2022-01-11 07:07:33,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:33,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:33,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:33,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:33,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:33,372 INFO L87 Difference]: Start difference. First operand 3640 states and 5905 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:33,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:33,514 INFO L93 Difference]: Finished difference Result 5142 states and 7826 transitions. [2022-01-11 07:07:33,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:33,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:33,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:33,521 INFO L225 Difference]: With dead ends: 5142 [2022-01-11 07:07:33,521 INFO L226 Difference]: Without dead ends: 3640 [2022-01-11 07:07:33,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:33,525 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 4937 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4937 SdHoareTripleChecker+Valid, 5014 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:33,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4937 Valid, 5014 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:33,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-01-11 07:07:33,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3640. [2022-01-11 07:07:33,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3638 states have (on average 1.620945574491479) internal successors, (5897), 3639 states have internal predecessors, (5897), 0 states have call successors, (0), 0 states 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 07:07:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 5897 transitions. [2022-01-11 07:07:33,695 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 5897 transitions. Word has length 110 [2022-01-11 07:07:33,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:33,696 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 5897 transitions. [2022-01-11 07:07:33,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:33,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 5897 transitions. [2022-01-11 07:07:33,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:33,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:33,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:33,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 07:07:33,698 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:33,698 INFO L85 PathProgramCache]: Analyzing trace with hash -595371192, now seen corresponding path program 1 times [2022-01-11 07:07:33,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:33,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783512109] [2022-01-11 07:07:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:33,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:33,763 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 07:07:33,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:33,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783512109] [2022-01-11 07:07:33,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783512109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:33,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:33,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:33,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615399113] [2022-01-11 07:07:33,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:33,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:33,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:33,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:33,765 INFO L87 Difference]: Start difference. First operand 3640 states and 5897 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:33,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:33,989 INFO L93 Difference]: Finished difference Result 5138 states and 7806 transitions. [2022-01-11 07:07:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:33,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:33,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:33,997 INFO L225 Difference]: With dead ends: 5138 [2022-01-11 07:07:33,997 INFO L226 Difference]: Without dead ends: 3640 [2022-01-11 07:07:34,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:34,000 INFO L933 BasicCegarLoop]: 5009 mSDtfsCounter, 4928 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4928 SdHoareTripleChecker+Valid, 5009 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:34,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4928 Valid, 5009 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:34,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-01-11 07:07:34,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3640. [2022-01-11 07:07:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3638 states have (on average 1.6187465640461791) internal successors, (5889), 3639 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states 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 07:07:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 5889 transitions. [2022-01-11 07:07:34,187 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 5889 transitions. Word has length 110 [2022-01-11 07:07:34,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:34,187 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 5889 transitions. [2022-01-11 07:07:34,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 5889 transitions. [2022-01-11 07:07:34,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 07:07:34,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:34,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:34,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 07:07:34,189 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:34,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:34,189 INFO L85 PathProgramCache]: Analyzing trace with hash -662377945, now seen corresponding path program 1 times [2022-01-11 07:07:34,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:34,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173132239] [2022-01-11 07:07:34,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:34,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:34,243 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 07:07:34,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:34,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173132239] [2022-01-11 07:07:34,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173132239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:34,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:34,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:07:34,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916456311] [2022-01-11 07:07:34,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:34,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:34,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:34,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:34,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:34,245 INFO L87 Difference]: Start difference. First operand 3640 states and 5889 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:34,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:34,597 INFO L93 Difference]: Finished difference Result 6516 states and 9554 transitions. [2022-01-11 07:07:34,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:34,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 07:07:34,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:34,609 INFO L225 Difference]: With dead ends: 6516 [2022-01-11 07:07:34,609 INFO L226 Difference]: Without dead ends: 5028 [2022-01-11 07:07:34,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:07:34,615 INFO L933 BasicCegarLoop]: 5000 mSDtfsCounter, 4877 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4877 SdHoareTripleChecker+Valid, 5907 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:34,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4877 Valid, 5907 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:34,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2022-01-11 07:07:34,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4912. [2022-01-11 07:07:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 4910 states have (on average 1.5268839103869654) internal successors, (7497), 4911 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states 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 07:07:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 7497 transitions. [2022-01-11 07:07:34,955 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 7497 transitions. Word has length 110 [2022-01-11 07:07:34,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:34,955 INFO L470 AbstractCegarLoop]: Abstraction has 4912 states and 7497 transitions. [2022-01-11 07:07:34,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:07:34,956 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 7497 transitions. [2022-01-11 07:07:34,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-11 07:07:34,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:34,965 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:34,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 07:07:34,966 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:34,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:34,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1294335533, now seen corresponding path program 1 times [2022-01-11 07:07:34,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:34,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499395864] [2022-01-11 07:07:34,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:34,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:35,046 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:07:35,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:35,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499395864] [2022-01-11 07:07:35,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499395864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:35,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:35,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:07:35,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269669985] [2022-01-11 07:07:35,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:35,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:35,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:35,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:35,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:35,049 INFO L87 Difference]: Start difference. First operand 4912 states and 7497 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 07:07:35,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:35,530 INFO L93 Difference]: Finished difference Result 10274 states and 14311 transitions. [2022-01-11 07:07:35,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:35,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-01-11 07:07:35,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:35,550 INFO L225 Difference]: With dead ends: 10274 [2022-01-11 07:07:35,551 INFO L226 Difference]: Without dead ends: 7520 [2022-01-11 07:07:35,558 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 07:07:35,559 INFO L933 BasicCegarLoop]: 4997 mSDtfsCounter, 4895 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4895 SdHoareTripleChecker+Valid, 5904 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:35,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4895 Valid, 5904 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:35,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7520 states. [2022-01-11 07:07:36,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7520 to 7318. [2022-01-11 07:07:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7318 states, 7316 states have (on average 1.4402679059595407) internal successors, (10537), 7317 states have internal predecessors, (10537), 0 states have call successors, (0), 0 states 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 07:07:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7318 states to 7318 states and 10537 transitions. [2022-01-11 07:07:36,136 INFO L78 Accepts]: Start accepts. Automaton has 7318 states and 10537 transitions. Word has length 178 [2022-01-11 07:07:36,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:36,136 INFO L470 AbstractCegarLoop]: Abstraction has 7318 states and 10537 transitions. [2022-01-11 07:07:36,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 07:07:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 7318 states and 10537 transitions. [2022-01-11 07:07:36,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-11 07:07:36,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:36,142 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:36,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 07:07:36,143 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:36,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:36,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2045259373, now seen corresponding path program 1 times [2022-01-11 07:07:36,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:36,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729652018] [2022-01-11 07:07:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:36,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:07:36,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:36,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729652018] [2022-01-11 07:07:36,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729652018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:36,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:36,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:07:36,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291378364] [2022-01-11 07:07:36,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:36,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:36,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:36,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:36,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:36,228 INFO L87 Difference]: Start difference. First operand 7318 states and 10537 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 07:07:36,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:36,943 INFO L93 Difference]: Finished difference Result 17195 states and 22939 transitions. [2022-01-11 07:07:36,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:36,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-01-11 07:07:36,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:36,966 INFO L225 Difference]: With dead ends: 17195 [2022-01-11 07:07:36,967 INFO L226 Difference]: Without dead ends: 12099 [2022-01-11 07:07:36,980 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 07:07:36,981 INFO L933 BasicCegarLoop]: 5526 mSDtfsCounter, 4734 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4734 SdHoareTripleChecker+Valid, 6558 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:36,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4734 Valid, 6558 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:36,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12099 states. [2022-01-11 07:07:37,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12099 to 12097. [2022-01-11 07:07:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12097 states, 12095 states have (on average 1.3598181066556427) internal successors, (16447), 12096 states have internal predecessors, (16447), 0 states have call successors, (0), 0 states 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 07:07:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12097 states to 12097 states and 16447 transitions. [2022-01-11 07:07:37,812 INFO L78 Accepts]: Start accepts. Automaton has 12097 states and 16447 transitions. Word has length 178 [2022-01-11 07:07:37,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:37,812 INFO L470 AbstractCegarLoop]: Abstraction has 12097 states and 16447 transitions. [2022-01-11 07:07:37,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 07:07:37,812 INFO L276 IsEmpty]: Start isEmpty. Operand 12097 states and 16447 transitions. [2022-01-11 07:07:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-11 07:07:37,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:37,820 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:37,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 07:07:37,820 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:37,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:37,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1361029068, now seen corresponding path program 1 times [2022-01-11 07:07:37,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:37,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623281125] [2022-01-11 07:07:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:37,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:37,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:07:37,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:37,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623281125] [2022-01-11 07:07:37,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623281125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:37,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:37,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:07:37,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62971421] [2022-01-11 07:07:37,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:37,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:37,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:37,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:37,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:37,866 INFO L87 Difference]: Start difference. First operand 12097 states and 16447 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 07:07:38,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:38,554 INFO L93 Difference]: Finished difference Result 21877 states and 28704 transitions. [2022-01-11 07:07:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:38,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 178 [2022-01-11 07:07:38,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:38,583 INFO L225 Difference]: With dead ends: 21877 [2022-01-11 07:07:38,583 INFO L226 Difference]: Without dead ends: 12002 [2022-01-11 07:07:38,595 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 07:07:38,596 INFO L933 BasicCegarLoop]: 5008 mSDtfsCounter, 1046 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 8966 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:38,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1046 Valid, 8966 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:38,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12002 states. [2022-01-11 07:07:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12002 to 12002. [2022-01-11 07:07:39,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12002 states, 12000 states have (on average 1.3611666666666666) internal successors, (16334), 12001 states have internal predecessors, (16334), 0 states have call successors, (0), 0 states 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 07:07:39,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12002 states to 12002 states and 16334 transitions. [2022-01-11 07:07:39,237 INFO L78 Accepts]: Start accepts. Automaton has 12002 states and 16334 transitions. Word has length 178 [2022-01-11 07:07:39,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:39,238 INFO L470 AbstractCegarLoop]: Abstraction has 12002 states and 16334 transitions. [2022-01-11 07:07:39,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 07:07:39,238 INFO L276 IsEmpty]: Start isEmpty. Operand 12002 states and 16334 transitions. [2022-01-11 07:07:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-11 07:07:39,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:39,244 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:39,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 07:07:39,245 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:39,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:39,245 INFO L85 PathProgramCache]: Analyzing trace with hash -788170566, now seen corresponding path program 1 times [2022-01-11 07:07:39,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:39,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132081043] [2022-01-11 07:07:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:39,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:07:39,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:39,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132081043] [2022-01-11 07:07:39,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132081043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:39,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:39,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:07:39,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228464002] [2022-01-11 07:07:39,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:39,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:39,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:39,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:39,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:39,305 INFO L87 Difference]: Start difference. First operand 12002 states and 16334 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 07:07:40,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:40,550 INFO L93 Difference]: Finished difference Result 31152 states and 40222 transitions. [2022-01-11 07:07:40,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:40,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2022-01-11 07:07:40,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:40,593 INFO L225 Difference]: With dead ends: 31152 [2022-01-11 07:07:40,593 INFO L226 Difference]: Without dead ends: 21372 [2022-01-11 07:07:40,614 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 07:07:40,615 INFO L933 BasicCegarLoop]: 5240 mSDtfsCounter, 4893 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4893 SdHoareTripleChecker+Valid, 6260 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:40,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4893 Valid, 6260 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:07:40,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21372 states. [2022-01-11 07:07:41,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21372 to 20746. [2022-01-11 07:07:41,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20746 states, 20744 states have (on average 1.309101426918627) internal successors, (27156), 20745 states have internal predecessors, (27156), 0 states have call successors, (0), 0 states 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 07:07:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20746 states to 20746 states and 27156 transitions. [2022-01-11 07:07:41,909 INFO L78 Accepts]: Start accepts. Automaton has 20746 states and 27156 transitions. Word has length 179 [2022-01-11 07:07:41,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:41,909 INFO L470 AbstractCegarLoop]: Abstraction has 20746 states and 27156 transitions. [2022-01-11 07:07:41,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 07:07:41,910 INFO L276 IsEmpty]: Start isEmpty. Operand 20746 states and 27156 transitions. [2022-01-11 07:07:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-11 07:07:41,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:41,921 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:41,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 07:07:41,922 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:41,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash -889981673, now seen corresponding path program 1 times [2022-01-11 07:07:41,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:41,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426705286] [2022-01-11 07:07:41,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:41,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:07:41,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:41,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426705286] [2022-01-11 07:07:41,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426705286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:41,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:41,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:07:41,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392880928] [2022-01-11 07:07:41,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:41,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:41,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:41,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:41,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:41,965 INFO L87 Difference]: Start difference. First operand 20746 states and 27156 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 07:07:43,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:43,093 INFO L93 Difference]: Finished difference Result 39229 states and 50186 transitions. [2022-01-11 07:07:43,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:43,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 179 [2022-01-11 07:07:43,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:43,132 INFO L225 Difference]: With dead ends: 39229 [2022-01-11 07:07:43,132 INFO L226 Difference]: Without dead ends: 20652 [2022-01-11 07:07:43,162 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 07:07:43,162 INFO L933 BasicCegarLoop]: 5007 mSDtfsCounter, 1044 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 8965 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:43,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 8965 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20652 states. [2022-01-11 07:07:44,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20652 to 20652. [2022-01-11 07:07:44,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20652 states, 20650 states have (on average 1.309685230024213) internal successors, (27045), 20651 states have internal predecessors, (27045), 0 states have call successors, (0), 0 states 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 07:07:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20652 states to 20652 states and 27045 transitions. [2022-01-11 07:07:44,408 INFO L78 Accepts]: Start accepts. Automaton has 20652 states and 27045 transitions. Word has length 179 [2022-01-11 07:07:44,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:44,409 INFO L470 AbstractCegarLoop]: Abstraction has 20652 states and 27045 transitions. [2022-01-11 07:07:44,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 07:07:44,409 INFO L276 IsEmpty]: Start isEmpty. Operand 20652 states and 27045 transitions. [2022-01-11 07:07:44,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-11 07:07:44,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:44,419 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:44,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 07:07:44,419 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:44,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:44,420 INFO L85 PathProgramCache]: Analyzing trace with hash 546157628, now seen corresponding path program 1 times [2022-01-11 07:07:44,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:44,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402613905] [2022-01-11 07:07:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:44,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:07:44,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:44,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402613905] [2022-01-11 07:07:44,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402613905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:44,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:44,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:07:44,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793554362] [2022-01-11 07:07:44,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:44,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:44,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:44,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:44,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:44,483 INFO L87 Difference]: Start difference. First operand 20652 states and 27045 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 07:07:46,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:46,711 INFO L93 Difference]: Finished difference Result 56517 states and 71619 transitions. [2022-01-11 07:07:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:46,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2022-01-11 07:07:46,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:46,772 INFO L225 Difference]: With dead ends: 56517 [2022-01-11 07:07:46,772 INFO L226 Difference]: Without dead ends: 38087 [2022-01-11 07:07:46,793 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 07:07:46,794 INFO L933 BasicCegarLoop]: 5287 mSDtfsCounter, 4893 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4893 SdHoareTripleChecker+Valid, 6305 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:46,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4893 Valid, 6305 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38087 states. [2022-01-11 07:07:48,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38087 to 37061. [2022-01-11 07:07:48,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37061 states, 37059 states have (on average 1.2775574084567851) internal successors, (47345), 37060 states have internal predecessors, (47345), 0 states have call successors, (0), 0 states 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 07:07:48,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37061 states to 37061 states and 47345 transitions. [2022-01-11 07:07:48,988 INFO L78 Accepts]: Start accepts. Automaton has 37061 states and 47345 transitions. Word has length 180 [2022-01-11 07:07:48,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:48,989 INFO L470 AbstractCegarLoop]: Abstraction has 37061 states and 47345 transitions. [2022-01-11 07:07:48,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 07:07:48,989 INFO L276 IsEmpty]: Start isEmpty. Operand 37061 states and 47345 transitions. [2022-01-11 07:07:49,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-11 07:07:49,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:49,007 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:49,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 07:07:49,007 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:49,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:49,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1784398813, now seen corresponding path program 1 times [2022-01-11 07:07:49,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:49,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635420685] [2022-01-11 07:07:49,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:49,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:07:49,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:49,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635420685] [2022-01-11 07:07:49,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635420685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:49,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:49,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:07:49,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044746805] [2022-01-11 07:07:49,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:49,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:49,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:49,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:49,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:49,045 INFO L87 Difference]: Start difference. First operand 37061 states and 47345 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 07:07:51,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:51,697 INFO L93 Difference]: Finished difference Result 71853 states and 90558 transitions. [2022-01-11 07:07:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:51,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 180 [2022-01-11 07:07:51,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:51,760 INFO L225 Difference]: With dead ends: 71853 [2022-01-11 07:07:51,761 INFO L226 Difference]: Without dead ends: 36968 [2022-01-11 07:07:51,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:51,806 INFO L933 BasicCegarLoop]: 5006 mSDtfsCounter, 1042 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 8964 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:51,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 8964 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:51,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36968 states. [2022-01-11 07:07:54,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36968 to 36968. [2022-01-11 07:07:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36968 states, 36966 states have (on average 1.2778228642536384) internal successors, (47236), 36967 states have internal predecessors, (47236), 0 states have call successors, (0), 0 states 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 07:07:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36968 states to 36968 states and 47236 transitions. [2022-01-11 07:07:54,112 INFO L78 Accepts]: Start accepts. Automaton has 36968 states and 47236 transitions. Word has length 180 [2022-01-11 07:07:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:54,112 INFO L470 AbstractCegarLoop]: Abstraction has 36968 states and 47236 transitions. [2022-01-11 07:07:54,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 07:07:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 36968 states and 47236 transitions. [2022-01-11 07:07:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-11 07:07:54,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:54,124 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:54,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 07:07:54,124 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:54,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1584495378, now seen corresponding path program 1 times [2022-01-11 07:07:54,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:54,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568452747] [2022-01-11 07:07:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:54,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:07:54,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:54,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568452747] [2022-01-11 07:07:54,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568452747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:54,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:54,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:07:54,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965205149] [2022-01-11 07:07:54,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:54,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:54,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:54,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:54,183 INFO L87 Difference]: Start difference. First operand 36968 states and 47236 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 07:07:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:58,427 INFO L93 Difference]: Finished difference Result 104048 states and 130384 transitions. [2022-01-11 07:07:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:58,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2022-01-11 07:07:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:58,535 INFO L225 Difference]: With dead ends: 104048 [2022-01-11 07:07:58,535 INFO L226 Difference]: Without dead ends: 69302 [2022-01-11 07:07:58,565 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 07:07:58,565 INFO L933 BasicCegarLoop]: 5271 mSDtfsCounter, 4893 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4893 SdHoareTripleChecker+Valid, 6287 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:58,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4893 Valid, 6287 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:58,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69302 states. [2022-01-11 07:08:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69302 to 67700. [2022-01-11 07:08:02,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67700 states, 67698 states have (on average 1.2587373334515053) internal successors, (85214), 67699 states have internal predecessors, (85214), 0 states have call successors, (0), 0 states 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 07:08:03,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67700 states to 67700 states and 85214 transitions. [2022-01-11 07:08:03,084 INFO L78 Accepts]: Start accepts. Automaton has 67700 states and 85214 transitions. Word has length 181 [2022-01-11 07:08:03,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:08:03,084 INFO L470 AbstractCegarLoop]: Abstraction has 67700 states and 85214 transitions. [2022-01-11 07:08:03,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 07:08:03,084 INFO L276 IsEmpty]: Start isEmpty. Operand 67700 states and 85214 transitions. [2022-01-11 07:08:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-11 07:08:03,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:08:03,108 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:03,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 07:08:03,109 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:08:03,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:08:03,109 INFO L85 PathProgramCache]: Analyzing trace with hash 2123826891, now seen corresponding path program 1 times [2022-01-11 07:08:03,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:08:03,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243910375] [2022-01-11 07:08:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:08:03,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:08:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:08:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:08:03,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:08:03,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243910375] [2022-01-11 07:08:03,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243910375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:08:03,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:08:03,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:08:03,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453153155] [2022-01-11 07:08:03,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:08:03,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:08:03,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:08:03,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:08:03,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:08:03,148 INFO L87 Difference]: Start difference. First operand 67700 states and 85214 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)