/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/systemc/kundu2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:04:04,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:04:04,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:04:04,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:04:04,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:04:04,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:04:04,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:04:04,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:04:04,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:04:04,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:04:04,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:04:04,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:04:04,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:04:04,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:04:04,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:04:04,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:04:04,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:04:04,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:04:04,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:04:04,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:04:04,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:04:04,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:04:04,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:04:04,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:04:04,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:04:04,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:04:04,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:04:04,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:04:04,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:04:04,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:04:04,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:04:04,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:04:04,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:04:04,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:04:04,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:04:04,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:04:04,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:04:04,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:04:04,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:04:04,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:04:04,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:04:04,964 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 06:04:04,982 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:04:04,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:04:04,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:04:04,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:04:04,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:04:04,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:04:04,983 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:04:04,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:04:04,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:04:04,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:04:04,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:04:04,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:04:04,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:04:04,984 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:04:04,984 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:04:04,984 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:04:04,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:04:04,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:04:04,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:04:04,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:04:04,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:04:04,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:04:04,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:04:04,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:04:04,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:04:04,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:04:04,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:04:04,985 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:04:04,985 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:04:04,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:04:04,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:04:04,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:04:04,986 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:04:04,986 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:04:05,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:04:05,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:04:05,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:04:05,206 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:04:05,206 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:04:05,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/kundu2.cil.c [2022-01-11 06:04:05,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6114210ee/4582d879f2dc4205a5e2d1a5ccacf6b4/FLAG531bce019 [2022-01-11 06:04:05,646 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:04:05,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/kundu2.cil.c [2022-01-11 06:04:05,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6114210ee/4582d879f2dc4205a5e2d1a5ccacf6b4/FLAG531bce019 [2022-01-11 06:04:05,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6114210ee/4582d879f2dc4205a5e2d1a5ccacf6b4 [2022-01-11 06:04:05,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:04:05,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:04:05,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:04:05,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:04:05,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:04:05,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:04:05" (1/1) ... [2022-01-11 06:04:05,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b04de07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:05, skipping insertion in model container [2022-01-11 06:04:05,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:04:05" (1/1) ... [2022-01-11 06:04:05,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:04:05,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:04:05,843 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/kundu2.cil.c[636,649] [2022-01-11 06:04:05,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:04:05,881 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:04:05,889 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/kundu2.cil.c[636,649] [2022-01-11 06:04:05,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:04:05,920 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:04:05,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:05 WrapperNode [2022-01-11 06:04:05,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:04:05,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:04:05,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:04:05,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:04:05,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:05" (1/1) ... [2022-01-11 06:04:05,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:05" (1/1) ... [2022-01-11 06:04:05,957 INFO L137 Inliner]: procedures = 34, calls = 40, calls flagged for inlining = 35, calls inlined = 45, statements flattened = 529 [2022-01-11 06:04:05,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:04:05,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:04:05,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:04:05,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:04:05,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:05" (1/1) ... [2022-01-11 06:04:05,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:05" (1/1) ... [2022-01-11 06:04:05,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:05" (1/1) ... [2022-01-11 06:04:05,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:05" (1/1) ... [2022-01-11 06:04:05,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:05" (1/1) ... [2022-01-11 06:04:05,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:05" (1/1) ... [2022-01-11 06:04:05,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:05" (1/1) ... [2022-01-11 06:04:05,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:04:05,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:04:05,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:04:05,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:04:05,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:05" (1/1) ... [2022-01-11 06:04:05,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:04:06,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:04:06,015 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 06:04:06,020 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 06:04:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:04:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:04:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:04:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:04:06,090 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:04:06,091 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:04:06,379 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:04:06,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:04:06,385 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-11 06:04:06,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:04:06 BoogieIcfgContainer [2022-01-11 06:04:06,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:04:06,387 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:04:06,387 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:04:06,388 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:04:06,390 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:04:06" (1/1) ... [2022-01-11 06:04:06,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:04:06 BasicIcfg [2022-01-11 06:04:06,528 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:04:06,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:04:06,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:04:06,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:04:06,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:04:05" (1/4) ... [2022-01-11 06:04:06,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ba1cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:04:06, skipping insertion in model container [2022-01-11 06:04:06,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:05" (2/4) ... [2022-01-11 06:04:06,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ba1cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:04:06, skipping insertion in model container [2022-01-11 06:04:06,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:04:06" (3/4) ... [2022-01-11 06:04:06,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ba1cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:04:06, skipping insertion in model container [2022-01-11 06:04:06,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:04:06" (4/4) ... [2022-01-11 06:04:06,534 INFO L111 eAbstractionObserver]: Analyzing ICFG kundu2.cil.cTransformedIcfg [2022-01-11 06:04:06,537 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:04:06,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-11 06:04:06,575 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:04:06,580 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 06:04:06,580 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-11 06:04:06,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 189 states have (on average 1.5238095238095237) internal successors, (288), 193 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 06:04:06,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 06:04:06,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:06,602 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] [2022-01-11 06:04:06,602 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:06,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:06,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1966922198, now seen corresponding path program 1 times [2022-01-11 06:04:06,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:06,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301511495] [2022-01-11 06:04:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:06,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:06,811 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 06:04:06,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:06,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301511495] [2022-01-11 06:04:06,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301511495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:06,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:06,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:06,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544160656] [2022-01-11 06:04:06,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:06,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:06,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:06,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:06,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:06,848 INFO L87 Difference]: Start difference. First operand has 194 states, 189 states have (on average 1.5238095238095237) internal successors, (288), 193 states have internal predecessors, (288), 0 states have call successors, (0), 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 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 06:04:06,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:06,914 INFO L93 Difference]: Finished difference Result 378 states and 564 transitions. [2022-01-11 06:04:06,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:06,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 06:04:06,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:06,932 INFO L225 Difference]: With dead ends: 378 [2022-01-11 06:04:06,933 INFO L226 Difference]: Without dead ends: 186 [2022-01-11 06:04:06,936 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 06:04:06,939 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 267 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:06,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 271 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:06,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-01-11 06:04:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-01-11 06:04:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 1.4725274725274726) internal successors, (268), 185 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 06:04:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 268 transitions. [2022-01-11 06:04:06,995 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 268 transitions. Word has length 44 [2022-01-11 06:04:06,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:06,996 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 268 transitions. [2022-01-11 06:04:06,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 06:04:06,996 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 268 transitions. [2022-01-11 06:04:06,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 06:04:06,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:06,998 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] [2022-01-11 06:04:06,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:04:06,999 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:07,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:07,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1044238615, now seen corresponding path program 1 times [2022-01-11 06:04:07,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:07,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604869489] [2022-01-11 06:04:07,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:07,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:07,094 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 06:04:07,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:07,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604869489] [2022-01-11 06:04:07,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604869489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:07,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:07,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:07,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778131430] [2022-01-11 06:04:07,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:07,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:07,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:07,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:07,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:07,096 INFO L87 Difference]: Start difference. First operand 186 states and 268 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 06:04:07,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:07,147 INFO L93 Difference]: Finished difference Result 510 states and 735 transitions. [2022-01-11 06:04:07,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:07,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 06:04:07,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:07,150 INFO L225 Difference]: With dead ends: 510 [2022-01-11 06:04:07,150 INFO L226 Difference]: Without dead ends: 334 [2022-01-11 06:04:07,155 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 06:04:07,155 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 243 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:07,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 471 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:07,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-11 06:04:07,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 322. [2022-01-11 06:04:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 318 states have (on average 1.4622641509433962) internal successors, (465), 321 states have internal predecessors, (465), 0 states have call successors, (0), 0 states 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 06:04:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 465 transitions. [2022-01-11 06:04:07,178 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 465 transitions. Word has length 44 [2022-01-11 06:04:07,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:07,178 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 465 transitions. [2022-01-11 06:04:07,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 06:04:07,179 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 465 transitions. [2022-01-11 06:04:07,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 06:04:07,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:07,184 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] [2022-01-11 06:04:07,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:04:07,186 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:07,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:07,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1562741016, now seen corresponding path program 1 times [2022-01-11 06:04:07,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:07,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200914894] [2022-01-11 06:04:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:07,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:07,273 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 06:04:07,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:07,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200914894] [2022-01-11 06:04:07,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200914894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:07,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:07,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:07,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270711390] [2022-01-11 06:04:07,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:07,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:07,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:07,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:07,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:07,275 INFO L87 Difference]: Start difference. First operand 322 states and 465 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 06:04:07,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:07,336 INFO L93 Difference]: Finished difference Result 893 states and 1286 transitions. [2022-01-11 06:04:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:07,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 06:04:07,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:07,338 INFO L225 Difference]: With dead ends: 893 [2022-01-11 06:04:07,338 INFO L226 Difference]: Without dead ends: 594 [2022-01-11 06:04:07,341 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 06:04:07,343 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 213 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:07,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 452 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:07,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-01-11 06:04:07,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 570. [2022-01-11 06:04:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 566 states have (on average 1.4257950530035335) internal successors, (807), 569 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 06:04:07,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 807 transitions. [2022-01-11 06:04:07,382 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 807 transitions. Word has length 44 [2022-01-11 06:04:07,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:07,383 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 807 transitions. [2022-01-11 06:04:07,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 06:04:07,383 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 807 transitions. [2022-01-11 06:04:07,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 06:04:07,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:07,383 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] [2022-01-11 06:04:07,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:04:07,384 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:07,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:07,384 INFO L85 PathProgramCache]: Analyzing trace with hash 309809518, now seen corresponding path program 1 times [2022-01-11 06:04:07,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:07,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891490324] [2022-01-11 06:04:07,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:07,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:07,461 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 06:04:07,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:07,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891490324] [2022-01-11 06:04:07,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891490324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:07,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:07,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:04:07,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132646214] [2022-01-11 06:04:07,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:07,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:04:07,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:07,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:04:07,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:04:07,463 INFO L87 Difference]: Start difference. First operand 570 states and 807 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 06:04:07,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:07,583 INFO L93 Difference]: Finished difference Result 1800 states and 2573 transitions. [2022-01-11 06:04:07,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:04:07,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-11 06:04:07,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:07,587 INFO L225 Difference]: With dead ends: 1800 [2022-01-11 06:04:07,588 INFO L226 Difference]: Without dead ends: 1244 [2022-01-11 06:04:07,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:04:07,593 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 852 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:07,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 1295 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:07,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2022-01-11 06:04:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 588. [2022-01-11 06:04:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 584 states have (on average 1.4006849315068493) internal successors, (818), 587 states have internal predecessors, (818), 0 states have call successors, (0), 0 states 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 06:04:07,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 818 transitions. [2022-01-11 06:04:07,634 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 818 transitions. Word has length 45 [2022-01-11 06:04:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:07,634 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 818 transitions. [2022-01-11 06:04:07,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 06:04:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 818 transitions. [2022-01-11 06:04:07,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 06:04:07,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:07,636 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] [2022-01-11 06:04:07,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:04:07,637 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:07,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:07,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1700294323, now seen corresponding path program 1 times [2022-01-11 06:04:07,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:07,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605664671] [2022-01-11 06:04:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:07,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:07,700 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 06:04:07,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:07,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605664671] [2022-01-11 06:04:07,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605664671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:07,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:07,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:04:07,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033171799] [2022-01-11 06:04:07,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:07,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:04:07,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:07,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:04:07,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:04:07,702 INFO L87 Difference]: Start difference. First operand 588 states and 818 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 06:04:07,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:07,855 INFO L93 Difference]: Finished difference Result 2088 states and 2916 transitions. [2022-01-11 06:04:07,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:04:07,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-11 06:04:07,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:07,861 INFO L225 Difference]: With dead ends: 2088 [2022-01-11 06:04:07,861 INFO L226 Difference]: Without dead ends: 1521 [2022-01-11 06:04:07,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:04:07,862 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 732 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:07,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 1406 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:07,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2022-01-11 06:04:07,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 627. [2022-01-11 06:04:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 623 states have (on average 1.375601926163724) internal successors, (857), 626 states have internal predecessors, (857), 0 states have call successors, (0), 0 states 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 06:04:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 857 transitions. [2022-01-11 06:04:07,933 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 857 transitions. Word has length 45 [2022-01-11 06:04:07,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:07,933 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 857 transitions. [2022-01-11 06:04:07,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 06:04:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 857 transitions. [2022-01-11 06:04:07,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 06:04:07,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:07,933 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] [2022-01-11 06:04:07,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:04:07,934 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:07,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:07,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1669274516, now seen corresponding path program 1 times [2022-01-11 06:04:07,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:07,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202779245] [2022-01-11 06:04:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:07,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:08,001 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 06:04:08,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:08,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202779245] [2022-01-11 06:04:08,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202779245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:08,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:08,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:04:08,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829147178] [2022-01-11 06:04:08,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:08,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:04:08,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:08,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:04:08,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:04:08,003 INFO L87 Difference]: Start difference. First operand 627 states and 857 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 06:04:08,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:08,147 INFO L93 Difference]: Finished difference Result 1897 states and 2626 transitions. [2022-01-11 06:04:08,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:04:08,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-11 06:04:08,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:08,152 INFO L225 Difference]: With dead ends: 1897 [2022-01-11 06:04:08,152 INFO L226 Difference]: Without dead ends: 1301 [2022-01-11 06:04:08,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:04:08,154 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 630 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:08,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 1016 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:08,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2022-01-11 06:04:08,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 645. [2022-01-11 06:04:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 641 states have (on average 1.3541341653666146) internal successors, (868), 644 states have internal predecessors, (868), 0 states have call successors, (0), 0 states 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 06:04:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 868 transitions. [2022-01-11 06:04:08,202 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 868 transitions. Word has length 45 [2022-01-11 06:04:08,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:08,203 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 868 transitions. [2022-01-11 06:04:08,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 06:04:08,203 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 868 transitions. [2022-01-11 06:04:08,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 06:04:08,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:08,203 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] [2022-01-11 06:04:08,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:04:08,204 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:08,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:08,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1781220909, now seen corresponding path program 1 times [2022-01-11 06:04:08,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:08,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450976642] [2022-01-11 06:04:08,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:08,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:08,257 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 06:04:08,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:08,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450976642] [2022-01-11 06:04:08,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450976642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:08,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:08,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:04:08,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812621441] [2022-01-11 06:04:08,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:08,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:04:08,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:08,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:04:08,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:04:08,259 INFO L87 Difference]: Start difference. First operand 645 states and 868 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 06:04:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:08,473 INFO L93 Difference]: Finished difference Result 2769 states and 3768 transitions. [2022-01-11 06:04:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:04:08,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-11 06:04:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:08,480 INFO L225 Difference]: With dead ends: 2769 [2022-01-11 06:04:08,480 INFO L226 Difference]: Without dead ends: 2157 [2022-01-11 06:04:08,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:04:08,482 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 397 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:08,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 1003 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:08,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2022-01-11 06:04:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1101. [2022-01-11 06:04:08,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1097 states have (on average 1.3618960802187785) internal successors, (1494), 1100 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states 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 06:04:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1494 transitions. [2022-01-11 06:04:08,589 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1494 transitions. Word has length 45 [2022-01-11 06:04:08,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:08,591 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 1494 transitions. [2022-01-11 06:04:08,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 06:04:08,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1494 transitions. [2022-01-11 06:04:08,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 06:04:08,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:08,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:08,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:04:08,592 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:08,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:08,592 INFO L85 PathProgramCache]: Analyzing trace with hash 619946939, now seen corresponding path program 1 times [2022-01-11 06:04:08,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:08,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614139731] [2022-01-11 06:04:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:08,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:08,663 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 06:04:08,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:08,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614139731] [2022-01-11 06:04:08,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614139731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:08,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:08,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:04:08,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299107891] [2022-01-11 06:04:08,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:08,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:04:08,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:08,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:04:08,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:04:08,664 INFO L87 Difference]: Start difference. First operand 1101 states and 1494 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:09,061 INFO L93 Difference]: Finished difference Result 3205 states and 4346 transitions. [2022-01-11 06:04:09,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:04:09,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-11 06:04:09,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:09,070 INFO L225 Difference]: With dead ends: 3205 [2022-01-11 06:04:09,071 INFO L226 Difference]: Without dead ends: 3201 [2022-01-11 06:04:09,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-11 06:04:09,073 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 1036 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:09,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 2257 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:04:09,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2022-01-11 06:04:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 1689. [2022-01-11 06:04:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1685 states have (on average 1.3590504451038576) internal successors, (2290), 1688 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states 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 06:04:09,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2290 transitions. [2022-01-11 06:04:09,220 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2290 transitions. Word has length 53 [2022-01-11 06:04:09,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:09,220 INFO L470 AbstractCegarLoop]: Abstraction has 1689 states and 2290 transitions. [2022-01-11 06:04:09,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:09,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2290 transitions. [2022-01-11 06:04:09,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 06:04:09,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:09,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:09,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:04:09,221 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:09,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:09,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1285432550, now seen corresponding path program 1 times [2022-01-11 06:04:09,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:09,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246776082] [2022-01-11 06:04:09,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:09,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:09,246 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 06:04:09,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:09,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246776082] [2022-01-11 06:04:09,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246776082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:09,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:09,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:09,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381855189] [2022-01-11 06:04:09,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:09,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:09,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:09,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:09,248 INFO L87 Difference]: Start difference. First operand 1689 states and 2290 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:09,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:09,504 INFO L93 Difference]: Finished difference Result 4707 states and 6361 transitions. [2022-01-11 06:04:09,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:09,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-11 06:04:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:09,513 INFO L225 Difference]: With dead ends: 4707 [2022-01-11 06:04:09,513 INFO L226 Difference]: Without dead ends: 3051 [2022-01-11 06:04:09,515 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 06:04:09,531 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 165 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:09,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 463 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:09,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2022-01-11 06:04:09,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2945. [2022-01-11 06:04:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2941 states have (on average 1.3390003400204011) internal successors, (3938), 2944 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states 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 06:04:09,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 3938 transitions. [2022-01-11 06:04:09,782 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 3938 transitions. Word has length 54 [2022-01-11 06:04:09,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:09,782 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 3938 transitions. [2022-01-11 06:04:09,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:09,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 3938 transitions. [2022-01-11 06:04:09,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 06:04:09,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:09,783 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] [2022-01-11 06:04:09,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:04:09,783 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:09,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:09,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1422160413, now seen corresponding path program 1 times [2022-01-11 06:04:09,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:09,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076941258] [2022-01-11 06:04:09,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:09,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:09,885 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 06:04:09,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:09,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076941258] [2022-01-11 06:04:09,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076941258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:09,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:09,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:04:09,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141141639] [2022-01-11 06:04:09,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:09,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:04:09,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:09,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:04:09,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:04:09,887 INFO L87 Difference]: Start difference. First operand 2945 states and 3938 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 06:04:10,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:10,476 INFO L93 Difference]: Finished difference Result 8803 states and 11801 transitions. [2022-01-11 06:04:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:04:10,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-11 06:04:10,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:10,492 INFO L225 Difference]: With dead ends: 8803 [2022-01-11 06:04:10,492 INFO L226 Difference]: Without dead ends: 5891 [2022-01-11 06:04:10,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:04:10,496 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 1188 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:10,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1188 Valid, 1305 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:04:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5891 states. [2022-01-11 06:04:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5891 to 4827. [2022-01-11 06:04:10,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4823 states have (on average 1.3410740203193032) internal successors, (6468), 4826 states have internal predecessors, (6468), 0 states have call successors, (0), 0 states 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 06:04:10,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6468 transitions. [2022-01-11 06:04:10,836 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6468 transitions. Word has length 55 [2022-01-11 06:04:10,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:10,836 INFO L470 AbstractCegarLoop]: Abstraction has 4827 states and 6468 transitions. [2022-01-11 06:04:10,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 06:04:10,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6468 transitions. [2022-01-11 06:04:10,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-11 06:04:10,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:10,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:10,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:04:10,837 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:10,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:10,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2025311159, now seen corresponding path program 1 times [2022-01-11 06:04:10,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:10,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163980411] [2022-01-11 06:04:10,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:10,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:10,889 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 06:04:10,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:10,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163980411] [2022-01-11 06:04:10,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163980411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:10,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:10,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:04:10,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465973494] [2022-01-11 06:04:10,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:10,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:04:10,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:04:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:04:10,891 INFO L87 Difference]: Start difference. First operand 4827 states and 6468 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:11,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:11,625 INFO L93 Difference]: Finished difference Result 12591 states and 16857 transitions. [2022-01-11 06:04:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 06:04:11,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-11 06:04:11,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:11,648 INFO L225 Difference]: With dead ends: 12591 [2022-01-11 06:04:11,649 INFO L226 Difference]: Without dead ends: 7797 [2022-01-11 06:04:11,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:04:11,656 INFO L933 BasicCegarLoop]: 769 mSDtfsCounter, 1041 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:11,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 2190 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:04:11,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7797 states. [2022-01-11 06:04:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7797 to 4823. [2022-01-11 06:04:12,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4823 states, 4819 states have (on average 1.3396970325793733) internal successors, (6456), 4822 states have internal predecessors, (6456), 0 states have call successors, (0), 0 states 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 06:04:12,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4823 states to 4823 states and 6456 transitions. [2022-01-11 06:04:12,072 INFO L78 Accepts]: Start accepts. Automaton has 4823 states and 6456 transitions. Word has length 58 [2022-01-11 06:04:12,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:12,072 INFO L470 AbstractCegarLoop]: Abstraction has 4823 states and 6456 transitions. [2022-01-11 06:04:12,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 4823 states and 6456 transitions. [2022-01-11 06:04:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 06:04:12,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:12,073 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:12,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:04:12,073 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:12,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:12,074 INFO L85 PathProgramCache]: Analyzing trace with hash 351960840, now seen corresponding path program 1 times [2022-01-11 06:04:12,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:12,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349893607] [2022-01-11 06:04:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:12,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-11 06:04:12,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:12,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349893607] [2022-01-11 06:04:12,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349893607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:12,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:12,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:12,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555689973] [2022-01-11 06:04:12,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:12,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:12,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:12,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:12,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:12,096 INFO L87 Difference]: Start difference. First operand 4823 states and 6456 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:12,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:12,855 INFO L93 Difference]: Finished difference Result 13973 states and 18607 transitions. [2022-01-11 06:04:12,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:12,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-11 06:04:12,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:12,871 INFO L225 Difference]: With dead ends: 13973 [2022-01-11 06:04:12,871 INFO L226 Difference]: Without dead ends: 9183 [2022-01-11 06:04:12,877 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 06:04:12,878 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 187 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:12,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 510 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9183 states. [2022-01-11 06:04:13,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9183 to 9177. [2022-01-11 06:04:13,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9177 states, 9173 states have (on average 1.311021476071078) internal successors, (12026), 9176 states have internal predecessors, (12026), 0 states have call successors, (0), 0 states 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 06:04:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9177 states to 9177 states and 12026 transitions. [2022-01-11 06:04:13,666 INFO L78 Accepts]: Start accepts. Automaton has 9177 states and 12026 transitions. Word has length 62 [2022-01-11 06:04:13,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:13,666 INFO L470 AbstractCegarLoop]: Abstraction has 9177 states and 12026 transitions. [2022-01-11 06:04:13,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:13,666 INFO L276 IsEmpty]: Start isEmpty. Operand 9177 states and 12026 transitions. [2022-01-11 06:04:13,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:04:13,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:13,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:13,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:04:13,668 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:13,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:13,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1669559612, now seen corresponding path program 1 times [2022-01-11 06:04:13,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:13,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793270946] [2022-01-11 06:04:13,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:13,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:13,715 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 06:04:13,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:13,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793270946] [2022-01-11 06:04:13,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793270946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:13,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:13,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:04:13,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725711045] [2022-01-11 06:04:13,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:13,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:04:13,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:13,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:04:13,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:04:13,716 INFO L87 Difference]: Start difference. First operand 9177 states and 12026 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:15,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:15,784 INFO L93 Difference]: Finished difference Result 32629 states and 42790 transitions. [2022-01-11 06:04:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:04:15,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 06:04:15,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:15,829 INFO L225 Difference]: With dead ends: 32629 [2022-01-11 06:04:15,829 INFO L226 Difference]: Without dead ends: 23513 [2022-01-11 06:04:15,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 06:04:15,844 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 624 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:15,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 2464 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:04:15,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23513 states. [2022-01-11 06:04:16,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23513 to 12733. [2022-01-11 06:04:16,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12733 states, 12729 states have (on average 1.310550710974939) internal successors, (16682), 12732 states have internal predecessors, (16682), 0 states have call successors, (0), 0 states 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 06:04:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12733 states to 12733 states and 16682 transitions. [2022-01-11 06:04:17,014 INFO L78 Accepts]: Start accepts. Automaton has 12733 states and 16682 transitions. Word has length 63 [2022-01-11 06:04:17,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:17,014 INFO L470 AbstractCegarLoop]: Abstraction has 12733 states and 16682 transitions. [2022-01-11 06:04:17,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:17,015 INFO L276 IsEmpty]: Start isEmpty. Operand 12733 states and 16682 transitions. [2022-01-11 06:04:17,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 06:04:17,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:17,016 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 06:04:17,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:04:17,016 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:17,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:17,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1441584847, now seen corresponding path program 1 times [2022-01-11 06:04:17,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:17,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162376169] [2022-01-11 06:04:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:17,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:17,110 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 06:04:17,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:17,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162376169] [2022-01-11 06:04:17,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162376169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:17,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:17,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:04:17,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236881100] [2022-01-11 06:04:17,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:17,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:04:17,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:17,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:04:17,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:04:17,112 INFO L87 Difference]: Start difference. First operand 12733 states and 16682 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 06:04:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:19,591 INFO L93 Difference]: Finished difference Result 36537 states and 47932 transitions. [2022-01-11 06:04:19,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:04:19,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 06:04:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:19,635 INFO L225 Difference]: With dead ends: 36537 [2022-01-11 06:04:19,635 INFO L226 Difference]: Without dead ends: 23865 [2022-01-11 06:04:19,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:04:19,653 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 1050 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:19,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 2083 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:04:19,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23865 states. [2022-01-11 06:04:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23865 to 21817. [2022-01-11 06:04:21,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21817 states, 21813 states have (on average 1.3116031724201165) internal successors, (28610), 21816 states have internal predecessors, (28610), 0 states have call successors, (0), 0 states 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 06:04:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21817 states to 21817 states and 28610 transitions. [2022-01-11 06:04:21,789 INFO L78 Accepts]: Start accepts. Automaton has 21817 states and 28610 transitions. Word has length 64 [2022-01-11 06:04:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:21,789 INFO L470 AbstractCegarLoop]: Abstraction has 21817 states and 28610 transitions. [2022-01-11 06:04:21,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 06:04:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand 21817 states and 28610 transitions. [2022-01-11 06:04:21,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 06:04:21,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:21,791 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:21,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:04:21,791 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:21,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:21,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1133298376, now seen corresponding path program 1 times [2022-01-11 06:04:21,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:21,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598697999] [2022-01-11 06:04:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:21,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:21,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:21,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598697999] [2022-01-11 06:04:21,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598697999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:21,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:21,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:21,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346815098] [2022-01-11 06:04:21,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:21,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:21,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:21,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:21,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:21,815 INFO L87 Difference]: Start difference. First operand 21817 states and 28610 transitions. 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 06:04:25,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:25,326 INFO L93 Difference]: Finished difference Result 57048 states and 74845 transitions. [2022-01-11 06:04:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:25,327 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 06:04:25,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:25,389 INFO L225 Difference]: With dead ends: 57048 [2022-01-11 06:04:25,389 INFO L226 Difference]: Without dead ends: 35292 [2022-01-11 06:04:25,415 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 06:04:25,416 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 205 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:25,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 695 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:25,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35292 states. [2022-01-11 06:04:28,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35292 to 29584. [2022-01-11 06:04:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29584 states, 29580 states have (on average 1.315314401622718) internal successors, (38907), 29583 states have internal predecessors, (38907), 0 states have call successors, (0), 0 states 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 06:04:28,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29584 states to 29584 states and 38907 transitions. [2022-01-11 06:04:28,419 INFO L78 Accepts]: Start accepts. Automaton has 29584 states and 38907 transitions. Word has length 64 [2022-01-11 06:04:28,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:28,420 INFO L470 AbstractCegarLoop]: Abstraction has 29584 states and 38907 transitions. [2022-01-11 06:04:28,420 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 06:04:28,420 INFO L276 IsEmpty]: Start isEmpty. Operand 29584 states and 38907 transitions. [2022-01-11 06:04:28,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:04:28,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:28,423 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 06:04:28,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:04:28,423 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:28,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:28,423 INFO L85 PathProgramCache]: Analyzing trace with hash -874329053, now seen corresponding path program 1 times [2022-01-11 06:04:28,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:28,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691366154] [2022-01-11 06:04:28,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:28,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:28,495 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 06:04:28,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:28,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691366154] [2022-01-11 06:04:28,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691366154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:28,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:28,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 06:04:28,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678778872] [2022-01-11 06:04:28,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:28,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 06:04:28,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:28,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 06:04:28,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:04:28,498 INFO L87 Difference]: Start difference. First operand 29584 states and 38907 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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 06:04:38,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:38,618 INFO L93 Difference]: Finished difference Result 90824 states and 119164 transitions. [2022-01-11 06:04:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-11 06:04:38,618 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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 06:04:38,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:38,765 INFO L225 Difference]: With dead ends: 90824 [2022-01-11 06:04:38,765 INFO L226 Difference]: Without dead ends: 90822 [2022-01-11 06:04:38,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-01-11 06:04:38,789 INFO L933 BasicCegarLoop]: 1509 mSDtfsCounter, 2771 mSDsluCounter, 3515 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2771 SdHoareTripleChecker+Valid, 5024 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:38,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2771 Valid, 5024 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:04:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90822 states. [2022-01-11 06:04:43,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90822 to 38960. [2022-01-11 06:04:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38960 states, 38956 states have (on average 1.3207978231851318) internal successors, (51453), 38959 states have internal predecessors, (51453), 0 states have call successors, (0), 0 states 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 06:04:43,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38960 states to 38960 states and 51453 transitions. [2022-01-11 06:04:43,737 INFO L78 Accepts]: Start accepts. Automaton has 38960 states and 51453 transitions. Word has length 67 [2022-01-11 06:04:43,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:43,737 INFO L470 AbstractCegarLoop]: Abstraction has 38960 states and 51453 transitions. [2022-01-11 06:04:43,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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 06:04:43,737 INFO L276 IsEmpty]: Start isEmpty. Operand 38960 states and 51453 transitions. [2022-01-11 06:04:43,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 06:04:43,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:43,741 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:43,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:04:43,741 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:43,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:43,742 INFO L85 PathProgramCache]: Analyzing trace with hash -37336765, now seen corresponding path program 1 times [2022-01-11 06:04:43,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:43,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456572872] [2022-01-11 06:04:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:43,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:43,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:43,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456572872] [2022-01-11 06:04:43,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456572872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:43,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:43,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:43,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534809947] [2022-01-11 06:04:43,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:43,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:43,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:43,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:43,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:43,765 INFO L87 Difference]: Start difference. First operand 38960 states and 51453 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:48,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:48,645 INFO L93 Difference]: Finished difference Result 77811 states and 102780 transitions. [2022-01-11 06:04:48,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:48,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-11 06:04:48,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:48,698 INFO L225 Difference]: With dead ends: 77811 [2022-01-11 06:04:48,698 INFO L226 Difference]: Without dead ends: 38964 [2022-01-11 06:04:48,722 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 06:04:48,723 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 173 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:48,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 520 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:48,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38964 states. [2022-01-11 06:04:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38964 to 38960. [2022-01-11 06:04:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38960 states, 38956 states have (on average 1.3134305370161208) internal successors, (51166), 38959 states have internal predecessors, (51166), 0 states have call successors, (0), 0 states 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 06:04:53,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38960 states to 38960 states and 51166 transitions. [2022-01-11 06:04:53,178 INFO L78 Accepts]: Start accepts. Automaton has 38960 states and 51166 transitions. Word has length 71 [2022-01-11 06:04:53,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:53,178 INFO L470 AbstractCegarLoop]: Abstraction has 38960 states and 51166 transitions. [2022-01-11 06:04:53,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:53,178 INFO L276 IsEmpty]: Start isEmpty. Operand 38960 states and 51166 transitions. [2022-01-11 06:04:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 06:04:53,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:53,182 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:53,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:04:53,182 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:04:53,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:53,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1267056964, now seen corresponding path program 1 times [2022-01-11 06:04:53,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:53,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174594917] [2022-01-11 06:04:53,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:53,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-11 06:04:53,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:53,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174594917] [2022-01-11 06:04:53,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174594917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:53,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:53,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:53,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855355138] [2022-01-11 06:04:53,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:53,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:53,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:53,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:53,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:53,200 INFO L87 Difference]: Start difference. First operand 38960 states and 51166 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:57,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:57,856 INFO L93 Difference]: Finished difference Result 40965 states and 53632 transitions. [2022-01-11 06:04:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:57,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-11 06:04:57,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:57,912 INFO L225 Difference]: With dead ends: 40965 [2022-01-11 06:04:57,913 INFO L226 Difference]: Without dead ends: 38908 [2022-01-11 06:04:57,926 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 06:04:57,927 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 250 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:57,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 255 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38908 states. [2022-01-11 06:05:02,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38908 to 38908. [2022-01-11 06:05:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38908 states, 38904 states have (on average 1.3136438412502571) internal successors, (51106), 38907 states have internal predecessors, (51106), 0 states have call successors, (0), 0 states 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 06:05:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38908 states to 38908 states and 51106 transitions. [2022-01-11 06:05:02,676 INFO L78 Accepts]: Start accepts. Automaton has 38908 states and 51106 transitions. Word has length 71 [2022-01-11 06:05:02,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:02,676 INFO L470 AbstractCegarLoop]: Abstraction has 38908 states and 51106 transitions. [2022-01-11 06:05:02,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:02,676 INFO L276 IsEmpty]: Start isEmpty. Operand 38908 states and 51106 transitions. [2022-01-11 06:05:02,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 06:05:02,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:02,680 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:02,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 06:05:02,680 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:05:02,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:02,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2127246708, now seen corresponding path program 1 times [2022-01-11 06:05:02,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:02,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577103540] [2022-01-11 06:05:02,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:02,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:02,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:02,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577103540] [2022-01-11 06:05:02,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577103540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:02,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:02,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:02,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88093704] [2022-01-11 06:05:02,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:02,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:02,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:02,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:02,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:02,703 INFO L87 Difference]: Start difference. First operand 38908 states and 51106 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:07,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:07,308 INFO L93 Difference]: Finished difference Result 77761 states and 102147 transitions. [2022-01-11 06:05:07,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:07,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-11 06:05:07,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:07,485 INFO L225 Difference]: With dead ends: 77761 [2022-01-11 06:05:07,486 INFO L226 Difference]: Without dead ends: 38914 [2022-01-11 06:05:07,526 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 06:05:07,527 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 211 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:07,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 666 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:07,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38914 states. [2022-01-11 06:05:12,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38914 to 38908. [2022-01-11 06:05:12,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38908 states, 38904 states have (on average 1.296164918774419) internal successors, (50426), 38907 states have internal predecessors, (50426), 0 states have call successors, (0), 0 states 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 06:05:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38908 states to 38908 states and 50426 transitions. [2022-01-11 06:05:12,276 INFO L78 Accepts]: Start accepts. Automaton has 38908 states and 50426 transitions. Word has length 72 [2022-01-11 06:05:12,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:12,276 INFO L470 AbstractCegarLoop]: Abstraction has 38908 states and 50426 transitions. [2022-01-11 06:05:12,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:12,277 INFO L276 IsEmpty]: Start isEmpty. Operand 38908 states and 50426 transitions. [2022-01-11 06:05:12,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 06:05:12,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:12,280 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:12,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 06:05:12,280 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 06:05:12,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:12,280 INFO L85 PathProgramCache]: Analyzing trace with hash 268474128, now seen corresponding path program 1 times [2022-01-11 06:05:12,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:12,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960670408] [2022-01-11 06:05:12,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:12,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:12,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:12,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960670408] [2022-01-11 06:05:12,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960670408] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:12,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:12,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:12,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556615405] [2022-01-11 06:05:12,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:12,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:12,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:12,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:12,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:12,317 INFO L87 Difference]: Start difference. First operand 38908 states and 50426 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)