/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:32:05,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:32:05,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:32:05,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:32:05,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:32:05,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:32:05,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:32:05,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:32:05,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:32:05,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:32:05,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:32:05,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:32:05,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:32:05,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:32:05,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:32:05,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:32:05,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:32:05,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:32:05,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:32:05,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:32:05,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:32:05,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:32:05,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:32:05,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:32:05,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:32:05,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:32:05,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:32:05,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:32:05,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:32:05,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:32:05,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:32:05,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:32:05,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:32:05,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:32:05,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:32:05,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:32:05,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:32:05,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:32:05,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:32:05,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:32:05,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:32:05,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:32:05,922 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:32:05,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:32:05,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:32:05,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:32:05,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:32:05,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:32:05,924 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:32:05,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:32:05,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:32:05,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:32:05,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:32:05,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:32:05,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:32:05,925 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:32:05,925 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:32:05,925 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:32:05,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:32:05,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:32:05,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:32:05,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:32:05,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:32:05,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:32:05,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:32:05,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:32:05,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:32:05,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:32:05,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:32:05,927 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:32:05,927 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:32:05,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:32:05,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:32:05,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:32:05,928 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:32:05,928 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:32:06,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:32:06,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:32:06,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:32:06,145 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:32:06,146 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:32:06,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-11 06:32:06,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8b43815d/2981ba4b66894eb9a31f4a322b52be96/FLAGbddaa4ef5 [2022-01-11 06:32:06,649 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:32:06,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-11 06:32:06,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8b43815d/2981ba4b66894eb9a31f4a322b52be96/FLAGbddaa4ef5 [2022-01-11 06:32:07,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8b43815d/2981ba4b66894eb9a31f4a322b52be96 [2022-01-11 06:32:07,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:32:07,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:32:07,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:32:07,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:32:07,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:32:07,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:32:07" (1/1) ... [2022-01-11 06:32:07,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@670e5093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:07, skipping insertion in model container [2022-01-11 06:32:07,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:32:07" (1/1) ... [2022-01-11 06:32:07,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:32:07,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:32:07,273 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7253,7266] [2022-01-11 06:32:07,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:32:07,354 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:32:07,408 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7253,7266] [2022-01-11 06:32:07,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:32:07,447 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:32:07,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:07 WrapperNode [2022-01-11 06:32:07,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:32:07,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:32:07,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:32:07,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:32:07,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:07" (1/1) ... [2022-01-11 06:32:07,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:07" (1/1) ... [2022-01-11 06:32:07,517 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 636 [2022-01-11 06:32:07,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:32:07,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:32:07,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:32:07,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:32:07,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:07" (1/1) ... [2022-01-11 06:32:07,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:07" (1/1) ... [2022-01-11 06:32:07,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:07" (1/1) ... [2022-01-11 06:32:07,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:07" (1/1) ... [2022-01-11 06:32:07,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:07" (1/1) ... [2022-01-11 06:32:07,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:07" (1/1) ... [2022-01-11 06:32:07,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:07" (1/1) ... [2022-01-11 06:32:07,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:32:07,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:32:07,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:32:07,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:32:07,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:07" (1/1) ... [2022-01-11 06:32:07,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:32:07,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:32:07,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 06:32:07,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 06:32:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:32:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:32:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:32:07,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:32:07,799 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:32:07,800 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:32:08,413 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:32:08,426 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:32:08,427 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:32:08,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:08 BoogieIcfgContainer [2022-01-11 06:32:08,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:32:08,430 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:32:08,430 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:32:08,431 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:32:08,433 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:08" (1/1) ... [2022-01-11 06:32:09,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:32:09 BasicIcfg [2022-01-11 06:32:09,019 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:32:09,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:32:09,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:32:09,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:32:09,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:32:07" (1/4) ... [2022-01-11 06:32:09,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c2dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:32:09, skipping insertion in model container [2022-01-11 06:32:09,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:07" (2/4) ... [2022-01-11 06:32:09,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c2dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:32:09, skipping insertion in model container [2022-01-11 06:32:09,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:08" (3/4) ... [2022-01-11 06:32:09,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c2dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:32:09, skipping insertion in model container [2022-01-11 06:32:09,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:32:09" (4/4) ... [2022-01-11 06:32:09,027 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 06:32:09,032 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:32:09,032 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:32:09,069 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:32:09,075 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 06:32:09,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:32:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 169 states have (on average 1.7218934911242603) internal successors, (291), 170 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:09,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 06:32:09,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:09,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:09,096 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:09,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:09,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1774879326, now seen corresponding path program 1 times [2022-01-11 06:32:09,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:09,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781877772] [2022-01-11 06:32:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:09,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:09,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:09,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781877772] [2022-01-11 06:32:09,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781877772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:09,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:09,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:09,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209645547] [2022-01-11 06:32:09,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:09,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:09,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:09,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:09,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:09,711 INFO L87 Difference]: Start difference. First operand has 171 states, 169 states have (on average 1.7218934911242603) internal successors, (291), 170 states have internal predecessors, (291), 0 states have call successors, (0), 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 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:10,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:10,191 INFO L93 Difference]: Finished difference Result 346 states and 569 transitions. [2022-01-11 06:32:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:10,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-11 06:32:10,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:10,203 INFO L225 Difference]: With dead ends: 346 [2022-01-11 06:32:10,204 INFO L226 Difference]: Without dead ends: 261 [2022-01-11 06:32:10,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:10,209 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 148 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:10,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 538 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 06:32:10,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-01-11 06:32:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 259. [2022-01-11 06:32:10,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.5) internal successors, (387), 258 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 387 transitions. [2022-01-11 06:32:10,292 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 387 transitions. Word has length 64 [2022-01-11 06:32:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:10,293 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 387 transitions. [2022-01-11 06:32:10,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 387 transitions. [2022-01-11 06:32:10,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:32:10,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:10,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:10,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:32:10,295 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:10,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:10,296 INFO L85 PathProgramCache]: Analyzing trace with hash -814300912, now seen corresponding path program 1 times [2022-01-11 06:32:10,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:10,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326535489] [2022-01-11 06:32:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:10,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:10,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:10,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326535489] [2022-01-11 06:32:10,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326535489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:10,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:10,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:32:10,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431918704] [2022-01-11 06:32:10,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:10,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:32:10,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:10,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:32:10,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:32:10,514 INFO L87 Difference]: Start difference. First operand 259 states and 387 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:10,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:10,618 INFO L93 Difference]: Finished difference Result 398 states and 603 transitions. [2022-01-11 06:32:10,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:32:10,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-11 06:32:10,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:10,621 INFO L225 Difference]: With dead ends: 398 [2022-01-11 06:32:10,621 INFO L226 Difference]: Without dead ends: 396 [2022-01-11 06:32:10,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:32:10,622 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 338 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:10,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 613 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:10,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-01-11 06:32:10,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 261. [2022-01-11 06:32:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.4961538461538462) internal successors, (389), 260 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 389 transitions. [2022-01-11 06:32:10,668 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 389 transitions. Word has length 65 [2022-01-11 06:32:10,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:10,669 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 389 transitions. [2022-01-11 06:32:10,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:10,669 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 389 transitions. [2022-01-11 06:32:10,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:32:10,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:10,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:10,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:32:10,678 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash 527456540, now seen corresponding path program 1 times [2022-01-11 06:32:10,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:10,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007311415] [2022-01-11 06:32:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:10,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:10,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:10,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007311415] [2022-01-11 06:32:10,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007311415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:10,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:10,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:32:10,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557586804] [2022-01-11 06:32:10,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:10,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:32:10,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:10,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:32:10,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:32:10,978 INFO L87 Difference]: Start difference. First operand 261 states and 389 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:11,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:11,674 INFO L93 Difference]: Finished difference Result 1476 states and 2281 transitions. [2022-01-11 06:32:11,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:32:11,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 06:32:11,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:11,681 INFO L225 Difference]: With dead ends: 1476 [2022-01-11 06:32:11,681 INFO L226 Difference]: Without dead ends: 1274 [2022-01-11 06:32:11,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-11 06:32:11,691 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 1737 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:11,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1737 Valid, 1209 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 06:32:11,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-01-11 06:32:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 818. [2022-01-11 06:32:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 1.5287637698898409) internal successors, (1249), 817 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:11,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1249 transitions. [2022-01-11 06:32:11,911 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1249 transitions. Word has length 66 [2022-01-11 06:32:11,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:11,913 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 1249 transitions. [2022-01-11 06:32:11,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1249 transitions. [2022-01-11 06:32:11,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:32:11,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:11,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:11,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:32:11,918 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:11,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1634677299, now seen corresponding path program 1 times [2022-01-11 06:32:11,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:11,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244622804] [2022-01-11 06:32:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:11,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:12,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:12,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244622804] [2022-01-11 06:32:12,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244622804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:12,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:12,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:32:12,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277343245] [2022-01-11 06:32:12,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:12,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:32:12,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:12,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:32:12,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:32:12,339 INFO L87 Difference]: Start difference. First operand 818 states and 1249 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:14,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:16,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:16,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:16,966 INFO L93 Difference]: Finished difference Result 1822 states and 2815 transitions. [2022-01-11 06:32:16,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:32:16,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-11 06:32:16,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:16,975 INFO L225 Difference]: With dead ends: 1822 [2022-01-11 06:32:16,975 INFO L226 Difference]: Without dead ends: 1294 [2022-01-11 06:32:16,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:32:16,984 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 212 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:16,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 687 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-11 06:32:16,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-01-11 06:32:17,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1292. [2022-01-11 06:32:17,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1291 states have (on average 1.5344694035631294) internal successors, (1981), 1291 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:17,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1981 transitions. [2022-01-11 06:32:17,227 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1981 transitions. Word has length 67 [2022-01-11 06:32:17,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:17,227 INFO L470 AbstractCegarLoop]: Abstraction has 1292 states and 1981 transitions. [2022-01-11 06:32:17,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1981 transitions. [2022-01-11 06:32:17,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 06:32:17,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:17,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:17,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:32:17,229 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:17,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:17,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1266438025, now seen corresponding path program 1 times [2022-01-11 06:32:17,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:17,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746788567] [2022-01-11 06:32:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:17,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:17,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:17,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746788567] [2022-01-11 06:32:17,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746788567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:17,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:17,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:17,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528610571] [2022-01-11 06:32:17,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:17,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:17,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:17,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:17,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:17,346 INFO L87 Difference]: Start difference. First operand 1292 states and 1981 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:17,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:17,668 INFO L93 Difference]: Finished difference Result 2379 states and 3663 transitions. [2022-01-11 06:32:17,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:17,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 06:32:17,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:17,675 INFO L225 Difference]: With dead ends: 2379 [2022-01-11 06:32:17,676 INFO L226 Difference]: Without dead ends: 1524 [2022-01-11 06:32:17,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:17,678 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 170 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:17,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 470 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:17,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2022-01-11 06:32:17,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1522. [2022-01-11 06:32:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1521 states have (on average 1.5161078238001315) internal successors, (2306), 1521 states have internal predecessors, (2306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:17,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2306 transitions. [2022-01-11 06:32:17,985 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2306 transitions. Word has length 68 [2022-01-11 06:32:17,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:17,985 INFO L470 AbstractCegarLoop]: Abstraction has 1522 states and 2306 transitions. [2022-01-11 06:32:17,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:17,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2306 transitions. [2022-01-11 06:32:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 06:32:17,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:17,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:17,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:32:17,987 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:17,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:17,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1902624580, now seen corresponding path program 1 times [2022-01-11 06:32:17,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:17,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498320824] [2022-01-11 06:32:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:17,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:18,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:18,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498320824] [2022-01-11 06:32:18,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498320824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:18,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:18,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:18,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258674581] [2022-01-11 06:32:18,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:18,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:18,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:18,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:18,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:18,087 INFO L87 Difference]: Start difference. First operand 1522 states and 2306 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:18,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:18,565 INFO L93 Difference]: Finished difference Result 3812 states and 5805 transitions. [2022-01-11 06:32:18,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:18,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 06:32:18,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:18,574 INFO L225 Difference]: With dead ends: 3812 [2022-01-11 06:32:18,575 INFO L226 Difference]: Without dead ends: 2475 [2022-01-11 06:32:18,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:18,577 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 162 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:18,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 456 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:18,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2022-01-11 06:32:18,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2464. [2022-01-11 06:32:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2463 states have (on average 1.4961429151441332) internal successors, (3685), 2463 states have internal predecessors, (3685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3685 transitions. [2022-01-11 06:32:18,997 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 3685 transitions. Word has length 68 [2022-01-11 06:32:18,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:18,998 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 3685 transitions. [2022-01-11 06:32:18,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:18,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 3685 transitions. [2022-01-11 06:32:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 06:32:18,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:18,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:18,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:32:19,000 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:19,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:19,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1690427753, now seen corresponding path program 1 times [2022-01-11 06:32:19,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:19,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078829605] [2022-01-11 06:32:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:19,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:19,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:19,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078829605] [2022-01-11 06:32:19,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078829605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:19,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:19,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:32:19,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997243335] [2022-01-11 06:32:19,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:19,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:32:19,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:19,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:32:19,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:32:19,299 INFO L87 Difference]: Start difference. First operand 2464 states and 3685 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:22,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:24,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:26,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:31,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:31,775 INFO L93 Difference]: Finished difference Result 19059 states and 28622 transitions. [2022-01-11 06:32:31,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:32:31,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 06:32:31,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:31,836 INFO L225 Difference]: With dead ends: 19059 [2022-01-11 06:32:31,837 INFO L226 Difference]: Without dead ends: 16694 [2022-01-11 06:32:31,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-11 06:32:31,846 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 1561 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 28 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:31,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1561 Valid, 856 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 551 Invalid, 3 Unknown, 0 Unchecked, 8.5s Time] [2022-01-11 06:32:31,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16694 states. [2022-01-11 06:32:34,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16694 to 8748. [2022-01-11 06:32:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8748 states, 8747 states have (on average 1.4856522236195266) internal successors, (12995), 8747 states have internal predecessors, (12995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:34,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8748 states to 8748 states and 12995 transitions. [2022-01-11 06:32:34,555 INFO L78 Accepts]: Start accepts. Automaton has 8748 states and 12995 transitions. Word has length 68 [2022-01-11 06:32:34,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:34,556 INFO L470 AbstractCegarLoop]: Abstraction has 8748 states and 12995 transitions. [2022-01-11 06:32:34,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand 8748 states and 12995 transitions. [2022-01-11 06:32:34,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 06:32:34,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:34,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:34,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:32:34,559 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:34,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:34,560 INFO L85 PathProgramCache]: Analyzing trace with hash -837072037, now seen corresponding path program 1 times [2022-01-11 06:32:34,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:34,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750697514] [2022-01-11 06:32:34,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:34,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:34,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:34,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750697514] [2022-01-11 06:32:34,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750697514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:34,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:34,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:34,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639068938] [2022-01-11 06:32:34,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:34,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:34,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:34,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:34,651 INFO L87 Difference]: Start difference. First operand 8748 states and 12995 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:37,103 INFO L93 Difference]: Finished difference Result 13172 states and 19513 transitions. [2022-01-11 06:32:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:37,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 06:32:37,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:37,132 INFO L225 Difference]: With dead ends: 13172 [2022-01-11 06:32:37,132 INFO L226 Difference]: Without dead ends: 9462 [2022-01-11 06:32:37,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:37,141 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 137 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:37,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 453 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:37,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9462 states. [2022-01-11 06:32:39,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9462 to 9460. [2022-01-11 06:32:39,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9460 states, 9459 states have (on average 1.4577650914472988) internal successors, (13789), 9459 states have internal predecessors, (13789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:39,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9460 states to 9460 states and 13789 transitions. [2022-01-11 06:32:39,844 INFO L78 Accepts]: Start accepts. Automaton has 9460 states and 13789 transitions. Word has length 68 [2022-01-11 06:32:39,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:39,844 INFO L470 AbstractCegarLoop]: Abstraction has 9460 states and 13789 transitions. [2022-01-11 06:32:39,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand 9460 states and 13789 transitions. [2022-01-11 06:32:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 06:32:39,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:39,848 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] [2022-01-11 06:32:39,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:32:39,848 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:39,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:39,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2032891240, now seen corresponding path program 1 times [2022-01-11 06:32:39,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:39,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423578672] [2022-01-11 06:32:39,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:39,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:39,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:39,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423578672] [2022-01-11 06:32:39,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423578672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:39,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:39,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:39,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437288741] [2022-01-11 06:32:39,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:39,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:39,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:39,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:39,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:39,951 INFO L87 Difference]: Start difference. First operand 9460 states and 13789 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:43,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:43,784 INFO L93 Difference]: Finished difference Result 24991 states and 36464 transitions. [2022-01-11 06:32:43,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:43,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 06:32:43,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:43,815 INFO L225 Difference]: With dead ends: 24991 [2022-01-11 06:32:43,815 INFO L226 Difference]: Without dead ends: 16307 [2022-01-11 06:32:43,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:43,827 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 141 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:43,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 543 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16307 states. [2022-01-11 06:32:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16307 to 16201. [2022-01-11 06:32:47,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16201 states, 16200 states have (on average 1.4380246913580248) internal successors, (23296), 16200 states have internal predecessors, (23296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16201 states to 16201 states and 23296 transitions. [2022-01-11 06:32:47,906 INFO L78 Accepts]: Start accepts. Automaton has 16201 states and 23296 transitions. Word has length 68 [2022-01-11 06:32:47,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:47,907 INFO L470 AbstractCegarLoop]: Abstraction has 16201 states and 23296 transitions. [2022-01-11 06:32:47,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 16201 states and 23296 transitions. [2022-01-11 06:32:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 06:32:47,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:47,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:47,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:32:47,912 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:47,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:47,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1179535524, now seen corresponding path program 1 times [2022-01-11 06:32:47,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:47,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618087501] [2022-01-11 06:32:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:47,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:48,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:48,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618087501] [2022-01-11 06:32:48,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618087501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:48,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:48,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 06:32:48,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250508569] [2022-01-11 06:32:48,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:48,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 06:32:48,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 06:32:48,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 06:32:48,276 INFO L87 Difference]: Start difference. First operand 16201 states and 23296 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:50,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:55,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:55,049 INFO L93 Difference]: Finished difference Result 32224 states and 46351 transitions. [2022-01-11 06:32:55,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:32:55,050 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 06:32:55,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:55,086 INFO L225 Difference]: With dead ends: 32224 [2022-01-11 06:32:55,086 INFO L226 Difference]: Without dead ends: 16201 [2022-01-11 06:32:55,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-11 06:32:55,106 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 206 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:55,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 943 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 502 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-01-11 06:32:55,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16201 states. [2022-01-11 06:32:59,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16201 to 16201. [2022-01-11 06:32:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16201 states, 16200 states have (on average 1.4366049382716048) internal successors, (23273), 16200 states have internal predecessors, (23273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16201 states to 16201 states and 23273 transitions. [2022-01-11 06:32:59,179 INFO L78 Accepts]: Start accepts. Automaton has 16201 states and 23273 transitions. Word has length 68 [2022-01-11 06:32:59,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:59,179 INFO L470 AbstractCegarLoop]: Abstraction has 16201 states and 23273 transitions. [2022-01-11 06:32:59,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:59,180 INFO L276 IsEmpty]: Start isEmpty. Operand 16201 states and 23273 transitions. [2022-01-11 06:32:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 06:32:59,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:59,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:59,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:32:59,185 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:59,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:59,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1812577595, now seen corresponding path program 1 times [2022-01-11 06:32:59,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:59,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17453140] [2022-01-11 06:32:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:59,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:59,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:59,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17453140] [2022-01-11 06:32:59,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17453140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:59,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:59,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:32:59,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196432479] [2022-01-11 06:32:59,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:59,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:32:59,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:59,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:32:59,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:32:59,473 INFO L87 Difference]: Start difference. First operand 16201 states and 23273 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:03,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:05,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:07,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:09,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []