/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_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:04:15,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:04:15,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:04:15,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:04:15,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:04:15,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:04:15,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:04:15,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:04:15,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:04:15,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:04:15,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:04:15,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:04:15,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:04:15,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:04:15,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:04:15,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:04:15,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:04:15,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:04:15,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:04:15,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:04:15,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:04:15,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:04:15,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:04:15,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:04:15,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:04:15,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:04:15,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:04:15,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:04:15,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:04:15,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:04:15,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:04:15,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:04:15,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:04:15,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:04:15,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:04:15,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:04:15,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:04:15,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:04:15,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:04:15,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:04:15,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:04:15,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:04:16,001 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:04:16,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:04:16,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:04:16,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:04:16,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:04:16,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:04:16,004 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:04:16,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:04:16,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:04:16,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:04:16,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:04:16,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:04:16,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:04:16,005 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:04:16,005 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:04:16,006 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:04:16,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:04:16,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:04:16,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:04:16,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:04:16,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:04:16,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:04:16,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:04:16,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:04:16,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:04:16,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:04:16,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:04:16,007 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:04:16,007 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:04:16,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:04:16,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:04:16,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:04:16,009 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:04:16,010 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:04:16,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:04:16,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:04:16,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:04:16,302 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:04:16,303 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:04:16,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c [2022-01-10 12:04:16,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0e47bdcf/db29324482aa4a36925092dccf2c9e10/FLAG962f79f6e [2022-01-10 12:04:16,911 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:04:16,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c [2022-01-10 12:04:16,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0e47bdcf/db29324482aa4a36925092dccf2c9e10/FLAG962f79f6e [2022-01-10 12:04:17,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0e47bdcf/db29324482aa4a36925092dccf2c9e10 [2022-01-10 12:04:17,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:04:17,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:04:17,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:04:17,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:04:17,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:04:17,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:04:17" (1/1) ... [2022-01-10 12:04:17,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e072d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:04:17, skipping insertion in model container [2022-01-10 12:04:17,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:04:17" (1/1) ... [2022-01-10 12:04:17,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:04:17,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:04:17,377 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2022-01-10 12:04:17,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:04:17,697 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:04:17,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:04:17,723 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2022-01-10 12:04:17,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:04:17,864 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:04:17,875 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2022-01-10 12:04:17,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:04:17,984 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:04:17,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:04:17 WrapperNode [2022-01-10 12:04:17,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:04:17,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:04:17,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:04:17,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:04:17,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:04:17" (1/1) ... [2022-01-10 12:04:18,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:04:17" (1/1) ... [2022-01-10 12:04:18,233 INFO L137 Inliner]: procedures = 94, calls = 339, calls flagged for inlining = 191, calls inlined = 496, statements flattened = 16018 [2022-01-10 12:04:18,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:04:18,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:04:18,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:04:18,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:04:18,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:04:17" (1/1) ... [2022-01-10 12:04:18,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:04:17" (1/1) ... [2022-01-10 12:04:18,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:04:17" (1/1) ... [2022-01-10 12:04:18,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:04:17" (1/1) ... [2022-01-10 12:04:18,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:04:17" (1/1) ... [2022-01-10 12:04:18,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:04:17" (1/1) ... [2022-01-10 12:04:18,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:04:17" (1/1) ... [2022-01-10 12:04:18,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:04:18,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:04:18,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:04:18,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:04:18,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:04:17" (1/1) ... [2022-01-10 12:04:18,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:04:18,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:04:18,689 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) [2022-01-10 12:04:18,714 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 [2022-01-10 12:04:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:04:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:04:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:04:18,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:04:18,974 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:04:18,976 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:04:25,400 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:04:25,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:04:25,440 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:04:25,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:04:25 BoogieIcfgContainer [2022-01-10 12:04:25,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:04:25,446 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:04:25,446 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:04:25,447 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:04:25,450 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:04:25" (1/1) ... [2022-01-10 12:04:26,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:04:26 BasicIcfg [2022-01-10 12:04:26,671 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:04:26,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:04:26,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:04:26,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:04:26,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:04:17" (1/4) ... [2022-01-10 12:04:26,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec8d5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:04:26, skipping insertion in model container [2022-01-10 12:04:26,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:04:17" (2/4) ... [2022-01-10 12:04:26,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec8d5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:04:26, skipping insertion in model container [2022-01-10 12:04:26,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:04:25" (3/4) ... [2022-01-10 12:04:26,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec8d5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:04:26, skipping insertion in model container [2022-01-10 12:04:26,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:04:26" (4/4) ... [2022-01-10 12:04:26,681 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product18.cil.cTransformedIcfg [2022-01-10 12:04:26,686 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:04:26,687 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 12:04:26,741 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:04:26,747 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 [2022-01-10 12:04:26,748 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 12:04:26,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 4697 states, 4691 states have (on average 1.875506288637817) internal successors, (8798), 4696 states have internal predecessors, (8798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:26,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 12:04:26,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:26,835 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] [2022-01-10 12:04:26,835 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:26,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:26,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2118720141, now seen corresponding path program 1 times [2022-01-10 12:04:26,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:26,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106056942] [2022-01-10 12:04:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:26,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:27,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:27,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106056942] [2022-01-10 12:04:27,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106056942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:27,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:27,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:04:27,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076795784] [2022-01-10 12:04:27,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:27,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:04:27,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:04:27,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:04:27,346 INFO L87 Difference]: Start difference. First operand has 4697 states, 4691 states have (on average 1.875506288637817) internal successors, (8798), 4696 states have internal predecessors, (8798), 0 states have call successors, (0), 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 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:27,732 INFO L93 Difference]: Finished difference Result 13996 states and 26234 transitions. [2022-01-10 12:04:27,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:04:27,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-01-10 12:04:27,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:27,805 INFO L225 Difference]: With dead ends: 13996 [2022-01-10 12:04:27,805 INFO L226 Difference]: Without dead ends: 9301 [2022-01-10 12:04:27,825 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 [2022-01-10 12:04:27,831 INFO L933 BasicCegarLoop]: 17431 mSDtfsCounter, 8759 mSDsluCounter, 8665 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8759 SdHoareTripleChecker+Valid, 26096 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:27,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8759 Valid, 26096 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:04:27,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9301 states. [2022-01-10 12:04:28,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9301 to 4686. [2022-01-10 12:04:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4686 states, 4681 states have (on average 1.8743858149967956) internal successors, (8774), 4685 states have internal predecessors, (8774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 8774 transitions. [2022-01-10 12:04:28,077 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 8774 transitions. Word has length 46 [2022-01-10 12:04:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:28,078 INFO L470 AbstractCegarLoop]: Abstraction has 4686 states and 8774 transitions. [2022-01-10 12:04:28,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 8774 transitions. [2022-01-10 12:04:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 12:04:28,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:28,085 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] [2022-01-10 12:04:28,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:04:28,086 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:28,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:28,088 INFO L85 PathProgramCache]: Analyzing trace with hash -808571897, now seen corresponding path program 1 times [2022-01-10 12:04:28,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:28,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551316448] [2022-01-10 12:04:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:28,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:28,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:28,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551316448] [2022-01-10 12:04:28,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551316448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:28,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:28,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:04:28,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839655696] [2022-01-10 12:04:28,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:28,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:04:28,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:04:28,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:04:28,179 INFO L87 Difference]: Start difference. First operand 4686 states and 8774 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:28,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:28,622 INFO L93 Difference]: Finished difference Result 13901 states and 26042 transitions. [2022-01-10 12:04:28,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:04:28,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 12:04:28,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:28,661 INFO L225 Difference]: With dead ends: 13901 [2022-01-10 12:04:28,661 INFO L226 Difference]: Without dead ends: 9265 [2022-01-10 12:04:28,671 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 [2022-01-10 12:04:28,672 INFO L933 BasicCegarLoop]: 17294 mSDtfsCounter, 8661 mSDsluCounter, 8605 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8661 SdHoareTripleChecker+Valid, 25899 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:28,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8661 Valid, 25899 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:04:28,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9265 states. [2022-01-10 12:04:28,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9265 to 4686. [2022-01-10 12:04:28,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4686 states, 4681 states have (on average 1.869045075838496) internal successors, (8749), 4685 states have internal predecessors, (8749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:28,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 8749 transitions. [2022-01-10 12:04:28,823 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 8749 transitions. Word has length 53 [2022-01-10 12:04:28,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:28,824 INFO L470 AbstractCegarLoop]: Abstraction has 4686 states and 8749 transitions. [2022-01-10 12:04:28,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:28,828 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 8749 transitions. [2022-01-10 12:04:28,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 12:04:28,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:28,837 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] [2022-01-10 12:04:28,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:04:28,838 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:28,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:28,839 INFO L85 PathProgramCache]: Analyzing trace with hash 266492404, now seen corresponding path program 1 times [2022-01-10 12:04:28,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:28,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234697025] [2022-01-10 12:04:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:28,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:28,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:28,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234697025] [2022-01-10 12:04:28,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234697025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:28,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:28,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:04:28,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10826990] [2022-01-10 12:04:28,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:28,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:04:28,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:28,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:04:28,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:04:28,939 INFO L87 Difference]: Start difference. First operand 4686 states and 8749 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:29,070 INFO L93 Difference]: Finished difference Result 9301 states and 17400 transitions. [2022-01-10 12:04:29,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:04:29,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 12:04:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:29,104 INFO L225 Difference]: With dead ends: 9301 [2022-01-10 12:04:29,104 INFO L226 Difference]: Without dead ends: 4686 [2022-01-10 12:04:29,117 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 [2022-01-10 12:04:29,120 INFO L933 BasicCegarLoop]: 8730 mSDtfsCounter, 8738 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8738 SdHoareTripleChecker+Valid, 8737 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:29,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8738 Valid, 8737 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:04:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2022-01-10 12:04:29,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 4686. [2022-01-10 12:04:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4686 states, 4681 states have (on average 1.868617816705832) internal successors, (8747), 4685 states have internal predecessors, (8747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 8747 transitions. [2022-01-10 12:04:29,261 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 8747 transitions. Word has length 56 [2022-01-10 12:04:29,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:29,261 INFO L470 AbstractCegarLoop]: Abstraction has 4686 states and 8747 transitions. [2022-01-10 12:04:29,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:29,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 8747 transitions. [2022-01-10 12:04:29,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:04:29,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:29,264 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] [2022-01-10 12:04:29,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:04:29,264 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:29,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:29,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1082464538, now seen corresponding path program 1 times [2022-01-10 12:04:29,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:29,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071799510] [2022-01-10 12:04:29,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:29,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:29,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:29,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071799510] [2022-01-10 12:04:29,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071799510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:29,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:29,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:04:29,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222060688] [2022-01-10 12:04:29,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:29,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:04:29,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:29,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:04:29,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:04:29,348 INFO L87 Difference]: Start difference. First operand 4686 states and 8747 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) [2022-01-10 12:04:29,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:29,597 INFO L93 Difference]: Finished difference Result 9265 states and 17327 transitions. [2022-01-10 12:04:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:04:29,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 12:04:29,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:29,659 INFO L225 Difference]: With dead ends: 9265 [2022-01-10 12:04:29,660 INFO L226 Difference]: Without dead ends: 4686 [2022-01-10 12:04:29,666 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 [2022-01-10 12:04:29,667 INFO L933 BasicCegarLoop]: 8652 mSDtfsCounter, 8719 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8719 SdHoareTripleChecker+Valid, 8667 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:29,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8719 Valid, 8667 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:04:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2022-01-10 12:04:29,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 4686. [2022-01-10 12:04:29,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4686 states, 4681 states have (on average 1.8664815210425123) internal successors, (8737), 4685 states have internal predecessors, (8737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:29,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 8737 transitions. [2022-01-10 12:04:29,803 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 8737 transitions. Word has length 58 [2022-01-10 12:04:29,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:29,803 INFO L470 AbstractCegarLoop]: Abstraction has 4686 states and 8737 transitions. [2022-01-10 12:04:29,803 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) [2022-01-10 12:04:29,804 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 8737 transitions. [2022-01-10 12:04:29,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:04:29,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:29,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:29,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:04:29,806 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:29,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:29,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1577560560, now seen corresponding path program 1 times [2022-01-10 12:04:29,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:29,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561555116] [2022-01-10 12:04:29,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:29,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:29,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:29,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561555116] [2022-01-10 12:04:29,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561555116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:29,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:29,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:04:29,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998123852] [2022-01-10 12:04:29,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:29,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:04:29,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:29,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:04:29,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:04:29,878 INFO L87 Difference]: Start difference. First operand 4686 states and 8737 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) [2022-01-10 12:04:30,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:30,147 INFO L93 Difference]: Finished difference Result 11633 states and 21746 transitions. [2022-01-10 12:04:30,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:04:30,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 12:04:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:30,175 INFO L225 Difference]: With dead ends: 11633 [2022-01-10 12:04:30,175 INFO L226 Difference]: Without dead ends: 9298 [2022-01-10 12:04:30,183 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 [2022-01-10 12:04:30,184 INFO L933 BasicCegarLoop]: 13064 mSDtfsCounter, 8715 mSDsluCounter, 8645 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8715 SdHoareTripleChecker+Valid, 21709 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:30,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8715 Valid, 21709 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:04:30,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9298 states. [2022-01-10 12:04:30,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9298 to 9298. [2022-01-10 12:04:30,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9298 states, 9293 states have (on average 1.8703325083396105) internal successors, (17381), 9297 states have internal predecessors, (17381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:30,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9298 states to 9298 states and 17381 transitions. [2022-01-10 12:04:30,473 INFO L78 Accepts]: Start accepts. Automaton has 9298 states and 17381 transitions. Word has length 60 [2022-01-10 12:04:30,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:30,474 INFO L470 AbstractCegarLoop]: Abstraction has 9298 states and 17381 transitions. [2022-01-10 12:04:30,474 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) [2022-01-10 12:04:30,474 INFO L276 IsEmpty]: Start isEmpty. Operand 9298 states and 17381 transitions. [2022-01-10 12:04:30,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:04:30,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:30,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:30,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:04:30,478 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:30,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:30,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1659713146, now seen corresponding path program 1 times [2022-01-10 12:04:30,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:30,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283816745] [2022-01-10 12:04:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:30,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:30,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:30,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283816745] [2022-01-10 12:04:30,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283816745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:30,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:30,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:04:30,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130640488] [2022-01-10 12:04:30,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:30,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:04:30,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:30,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:04:30,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:04:30,545 INFO L87 Difference]: Start difference. First operand 9298 states and 17381 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:30,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:30,980 INFO L93 Difference]: Finished difference Result 23110 states and 43266 transitions. [2022-01-10 12:04:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:04:30,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 12:04:30,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:31,038 INFO L225 Difference]: With dead ends: 23110 [2022-01-10 12:04:31,038 INFO L226 Difference]: Without dead ends: 18464 [2022-01-10 12:04:31,049 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 [2022-01-10 12:04:31,053 INFO L933 BasicCegarLoop]: 8734 mSDtfsCounter, 8671 mSDsluCounter, 8648 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8671 SdHoareTripleChecker+Valid, 17382 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:31,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8671 Valid, 17382 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:04:31,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18464 states. [2022-01-10 12:04:31,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18464 to 18462. [2022-01-10 12:04:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18462 states, 18457 states have (on average 1.872839573061711) internal successors, (34567), 18461 states have internal predecessors, (34567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:31,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18462 states to 18462 states and 34567 transitions. [2022-01-10 12:04:31,502 INFO L78 Accepts]: Start accepts. Automaton has 18462 states and 34567 transitions. Word has length 61 [2022-01-10 12:04:31,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:31,502 INFO L470 AbstractCegarLoop]: Abstraction has 18462 states and 34567 transitions. [2022-01-10 12:04:31,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:31,502 INFO L276 IsEmpty]: Start isEmpty. Operand 18462 states and 34567 transitions. [2022-01-10 12:04:31,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:04:31,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:31,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:31,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:04:31,510 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:31,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:31,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1157574234, now seen corresponding path program 1 times [2022-01-10 12:04:31,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:31,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404703850] [2022-01-10 12:04:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:31,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:31,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:31,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404703850] [2022-01-10 12:04:31,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404703850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:31,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:31,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:04:31,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086631340] [2022-01-10 12:04:31,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:31,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:04:31,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:31,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:04:31,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:04:31,652 INFO L87 Difference]: Start difference. First operand 18462 states and 34567 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:33,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:33,805 INFO L93 Difference]: Finished difference Result 109988 states and 206197 transitions. [2022-01-10 12:04:33,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:04:33,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 12:04:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:34,154 INFO L225 Difference]: With dead ends: 109988 [2022-01-10 12:04:34,154 INFO L226 Difference]: Without dead ends: 91555 [2022-01-10 12:04:34,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:04:34,210 INFO L933 BasicCegarLoop]: 34495 mSDtfsCounter, 25912 mSDsluCounter, 43128 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25912 SdHoareTripleChecker+Valid, 77623 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:34,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25912 Valid, 77623 Invalid, 65 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:04:34,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91555 states. [2022-01-10 12:04:35,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91555 to 18450. [2022-01-10 12:04:35,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18450 states, 18445 states have (on average 1.8731905665492004) internal successors, (34551), 18449 states have internal predecessors, (34551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18450 states to 18450 states and 34551 transitions. [2022-01-10 12:04:35,573 INFO L78 Accepts]: Start accepts. Automaton has 18450 states and 34551 transitions. Word has length 61 [2022-01-10 12:04:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:35,574 INFO L470 AbstractCegarLoop]: Abstraction has 18450 states and 34551 transitions. [2022-01-10 12:04:35,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 18450 states and 34551 transitions. [2022-01-10 12:04:35,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:04:35,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:35,579 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] [2022-01-10 12:04:35,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:04:35,579 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:35,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:35,580 INFO L85 PathProgramCache]: Analyzing trace with hash 724291997, now seen corresponding path program 1 times [2022-01-10 12:04:35,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:35,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937604824] [2022-01-10 12:04:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:35,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:35,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:35,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937604824] [2022-01-10 12:04:35,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937604824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:35,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:35,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:04:35,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466487983] [2022-01-10 12:04:35,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:35,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:04:35,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:35,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:04:35,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:04:35,657 INFO L87 Difference]: Start difference. First operand 18450 states and 34551 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:37,336 INFO L93 Difference]: Finished difference Result 73512 states and 137754 transitions. [2022-01-10 12:04:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:04:37,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 12:04:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:37,674 INFO L225 Difference]: With dead ends: 73512 [2022-01-10 12:04:37,674 INFO L226 Difference]: Without dead ends: 55085 [2022-01-10 12:04:37,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:04:37,726 INFO L933 BasicCegarLoop]: 8729 mSDtfsCounter, 25961 mSDsluCounter, 25911 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25961 SdHoareTripleChecker+Valid, 34640 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:37,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25961 Valid, 34640 Invalid, 45 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:04:37,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55085 states. [2022-01-10 12:04:38,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55085 to 18458. [2022-01-10 12:04:38,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18458 states, 18453 states have (on average 1.872649433696418) internal successors, (34556), 18457 states have internal predecessors, (34556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:38,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18458 states to 18458 states and 34556 transitions. [2022-01-10 12:04:38,736 INFO L78 Accepts]: Start accepts. Automaton has 18458 states and 34556 transitions. Word has length 63 [2022-01-10 12:04:38,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:38,736 INFO L470 AbstractCegarLoop]: Abstraction has 18458 states and 34556 transitions. [2022-01-10 12:04:38,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:38,737 INFO L276 IsEmpty]: Start isEmpty. Operand 18458 states and 34556 transitions. [2022-01-10 12:04:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:04:38,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:38,741 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] [2022-01-10 12:04:38,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:04:38,742 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:38,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:38,742 INFO L85 PathProgramCache]: Analyzing trace with hash -677076921, now seen corresponding path program 1 times [2022-01-10 12:04:38,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:38,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460492085] [2022-01-10 12:04:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:38,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:38,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:38,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460492085] [2022-01-10 12:04:38,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460492085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:38,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:38,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:04:38,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413201216] [2022-01-10 12:04:38,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:38,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:04:38,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:38,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:04:38,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:04:38,876 INFO L87 Difference]: Start difference. First operand 18458 states and 34556 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2022-01-10 12:04:41,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:41,242 INFO L93 Difference]: Finished difference Result 91717 states and 171907 transitions. [2022-01-10 12:04:41,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:04:41,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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 [2022-01-10 12:04:41,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:41,401 INFO L225 Difference]: With dead ends: 91717 [2022-01-10 12:04:41,402 INFO L226 Difference]: Without dead ends: 73275 [2022-01-10 12:04:41,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:04:41,461 INFO L933 BasicCegarLoop]: 34463 mSDtfsCounter, 51941 mSDsluCounter, 34464 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51941 SdHoareTripleChecker+Valid, 68927 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:41,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51941 Valid, 68927 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:04:41,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73275 states. [2022-01-10 12:04:42,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73275 to 18450. [2022-01-10 12:04:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18450 states, 18445 states have (on average 1.8727026294388722) internal successors, (34542), 18449 states have internal predecessors, (34542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18450 states to 18450 states and 34542 transitions. [2022-01-10 12:04:42,557 INFO L78 Accepts]: Start accepts. Automaton has 18450 states and 34542 transitions. Word has length 64 [2022-01-10 12:04:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:42,557 INFO L470 AbstractCegarLoop]: Abstraction has 18450 states and 34542 transitions. [2022-01-10 12:04:42,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2022-01-10 12:04:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 18450 states and 34542 transitions. [2022-01-10 12:04:42,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:04:42,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:42,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:42,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:04:42,562 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:42,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:42,711 INFO L85 PathProgramCache]: Analyzing trace with hash -847284011, now seen corresponding path program 1 times [2022-01-10 12:04:42,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:42,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644654631] [2022-01-10 12:04:42,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:42,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:42,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:42,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644654631] [2022-01-10 12:04:42,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644654631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:42,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:42,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:04:42,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335186505] [2022-01-10 12:04:42,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:42,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:04:42,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:42,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:04:42,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:04:42,782 INFO L87 Difference]: Start difference. First operand 18450 states and 34542 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:44,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:44,517 INFO L93 Difference]: Finished difference Result 73317 states and 137419 transitions. [2022-01-10 12:04:44,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:04:44,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 12:04:44,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:44,626 INFO L225 Difference]: With dead ends: 73317 [2022-01-10 12:04:44,626 INFO L226 Difference]: Without dead ends: 54914 [2022-01-10 12:04:44,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:04:44,650 INFO L933 BasicCegarLoop]: 8666 mSDtfsCounter, 34493 mSDsluCounter, 25758 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34493 SdHoareTripleChecker+Valid, 34424 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:44,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34493 Valid, 34424 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:04:44,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54914 states. [2022-01-10 12:04:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54914 to 18476. [2022-01-10 12:04:45,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18476 states, 18471 states have (on average 1.872123869850035) internal successors, (34580), 18475 states have internal predecessors, (34580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:45,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18476 states to 18476 states and 34580 transitions. [2022-01-10 12:04:45,740 INFO L78 Accepts]: Start accepts. Automaton has 18476 states and 34580 transitions. Word has length 65 [2022-01-10 12:04:45,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:45,740 INFO L470 AbstractCegarLoop]: Abstraction has 18476 states and 34580 transitions. [2022-01-10 12:04:45,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:45,741 INFO L276 IsEmpty]: Start isEmpty. Operand 18476 states and 34580 transitions. [2022-01-10 12:04:45,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:04:45,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:45,745 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] [2022-01-10 12:04:45,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:04:45,746 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:45,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:45,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1575117147, now seen corresponding path program 1 times [2022-01-10 12:04:45,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:45,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934641106] [2022-01-10 12:04:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:45,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:45,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:45,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934641106] [2022-01-10 12:04:45,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934641106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:45,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:45,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:04:45,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176240801] [2022-01-10 12:04:45,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:45,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:04:45,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:45,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:04:45,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:04:45,826 INFO L87 Difference]: Start difference. First operand 18476 states and 34580 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:46,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:46,906 INFO L93 Difference]: Finished difference Result 41338 states and 77441 transitions. [2022-01-10 12:04:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:04:46,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 12:04:46,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:46,948 INFO L225 Difference]: With dead ends: 41338 [2022-01-10 12:04:46,948 INFO L226 Difference]: Without dead ends: 27503 [2022-01-10 12:04:46,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:04:46,964 INFO L933 BasicCegarLoop]: 8659 mSDtfsCounter, 25783 mSDsluCounter, 8647 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25783 SdHoareTripleChecker+Valid, 17306 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:46,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25783 Valid, 17306 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:04:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27503 states. [2022-01-10 12:04:47,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27503 to 18396. [2022-01-10 12:04:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18396 states, 18391 states have (on average 1.872926975150889) internal successors, (34445), 18395 states have internal predecessors, (34445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18396 states to 18396 states and 34445 transitions. [2022-01-10 12:04:47,739 INFO L78 Accepts]: Start accepts. Automaton has 18396 states and 34445 transitions. Word has length 67 [2022-01-10 12:04:47,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:47,739 INFO L470 AbstractCegarLoop]: Abstraction has 18396 states and 34445 transitions. [2022-01-10 12:04:47,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:47,739 INFO L276 IsEmpty]: Start isEmpty. Operand 18396 states and 34445 transitions. [2022-01-10 12:04:47,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:04:47,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:47,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:47,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:04:47,744 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:47,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:47,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1968191204, now seen corresponding path program 1 times [2022-01-10 12:04:47,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:47,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221281019] [2022-01-10 12:04:47,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:47,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:47,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:47,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221281019] [2022-01-10 12:04:47,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221281019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:47,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:47,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:04:47,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563848934] [2022-01-10 12:04:47,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:47,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:04:47,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:47,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:04:47,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:04:47,834 INFO L87 Difference]: Start difference. First operand 18396 states and 34445 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:48,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:48,355 INFO L93 Difference]: Finished difference Result 27539 states and 51583 transitions. [2022-01-10 12:04:48,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:04:48,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 12:04:48,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:48,371 INFO L225 Difference]: With dead ends: 27539 [2022-01-10 12:04:48,371 INFO L226 Difference]: Without dead ends: 9244 [2022-01-10 12:04:48,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:04:48,388 INFO L933 BasicCegarLoop]: 8665 mSDtfsCounter, 17241 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17241 SdHoareTripleChecker+Valid, 8743 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:48,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17241 Valid, 8743 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:04:48,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9244 states. [2022-01-10 12:04:48,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9244 to 9244. [2022-01-10 12:04:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9244 states, 9240 states have (on average 1.8705627705627705) internal successors, (17284), 9243 states have internal predecessors, (17284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:48,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9244 states to 9244 states and 17284 transitions. [2022-01-10 12:04:48,869 INFO L78 Accepts]: Start accepts. Automaton has 9244 states and 17284 transitions. Word has length 68 [2022-01-10 12:04:48,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:48,869 INFO L470 AbstractCegarLoop]: Abstraction has 9244 states and 17284 transitions. [2022-01-10 12:04:48,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:48,870 INFO L276 IsEmpty]: Start isEmpty. Operand 9244 states and 17284 transitions. [2022-01-10 12:04:48,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:04:48,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:48,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:48,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:04:48,873 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:48,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:48,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1116668255, now seen corresponding path program 1 times [2022-01-10 12:04:48,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:48,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059248371] [2022-01-10 12:04:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:48,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:48,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:48,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059248371] [2022-01-10 12:04:48,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059248371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:48,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:48,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:04:48,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838979176] [2022-01-10 12:04:48,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:48,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:04:48,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:48,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:04:48,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:04:48,942 INFO L87 Difference]: Start difference. First operand 9244 states and 17284 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:49,362 INFO L93 Difference]: Finished difference Result 18375 states and 34402 transitions. [2022-01-10 12:04:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:04:49,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 12:04:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:49,377 INFO L225 Difference]: With dead ends: 18375 [2022-01-10 12:04:49,377 INFO L226 Difference]: Without dead ends: 9232 [2022-01-10 12:04:49,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:04:49,384 INFO L933 BasicCegarLoop]: 8647 mSDtfsCounter, 17212 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17212 SdHoareTripleChecker+Valid, 8738 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:49,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17212 Valid, 8738 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:04:49,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9232 states. [2022-01-10 12:04:49,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9232 to 9232. [2022-01-10 12:04:49,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9232 states, 9228 states have (on average 1.8706111833550065) internal successors, (17262), 9231 states have internal predecessors, (17262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:49,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9232 states to 9232 states and 17262 transitions. [2022-01-10 12:04:49,712 INFO L78 Accepts]: Start accepts. Automaton has 9232 states and 17262 transitions. Word has length 70 [2022-01-10 12:04:49,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:49,712 INFO L470 AbstractCegarLoop]: Abstraction has 9232 states and 17262 transitions. [2022-01-10 12:04:49,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:49,712 INFO L276 IsEmpty]: Start isEmpty. Operand 9232 states and 17262 transitions. [2022-01-10 12:04:49,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:04:49,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:49,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:49,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:04:49,716 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:49,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:49,716 INFO L85 PathProgramCache]: Analyzing trace with hash 690163579, now seen corresponding path program 1 times [2022-01-10 12:04:49,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:49,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585251161] [2022-01-10 12:04:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:49,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:49,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:49,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585251161] [2022-01-10 12:04:49,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585251161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:49,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:49,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:04:49,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718916498] [2022-01-10 12:04:49,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:49,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:04:49,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:49,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:04:49,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:04:49,788 INFO L87 Difference]: Start difference. First operand 9232 states and 17262 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:50,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:50,245 INFO L93 Difference]: Finished difference Result 18401 states and 34432 transitions. [2022-01-10 12:04:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:04:50,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 12:04:50,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:50,262 INFO L225 Difference]: With dead ends: 18401 [2022-01-10 12:04:50,262 INFO L226 Difference]: Without dead ends: 9294 [2022-01-10 12:04:50,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:04:50,268 INFO L933 BasicCegarLoop]: 8673 mSDtfsCounter, 17285 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17285 SdHoareTripleChecker+Valid, 8808 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:50,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17285 Valid, 8808 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:04:50,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9294 states. [2022-01-10 12:04:50,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9294 to 9232. [2022-01-10 12:04:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9232 states, 9228 states have (on average 1.870394451668834) internal successors, (17260), 9231 states have internal predecessors, (17260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9232 states to 9232 states and 17260 transitions. [2022-01-10 12:04:50,598 INFO L78 Accepts]: Start accepts. Automaton has 9232 states and 17260 transitions. Word has length 70 [2022-01-10 12:04:50,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:50,598 INFO L470 AbstractCegarLoop]: Abstraction has 9232 states and 17260 transitions. [2022-01-10 12:04:50,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:50,598 INFO L276 IsEmpty]: Start isEmpty. Operand 9232 states and 17260 transitions. [2022-01-10 12:04:50,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:04:50,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:50,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:50,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:04:50,600 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:50,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:50,601 INFO L85 PathProgramCache]: Analyzing trace with hash 671906836, now seen corresponding path program 1 times [2022-01-10 12:04:50,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:50,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971619963] [2022-01-10 12:04:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:50,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:50,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:50,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971619963] [2022-01-10 12:04:50,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971619963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:50,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:50,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:04:50,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073423202] [2022-01-10 12:04:50,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:50,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:04:50,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:50,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:04:50,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:04:50,687 INFO L87 Difference]: Start difference. First operand 9232 states and 17260 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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) [2022-01-10 12:04:51,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:51,998 INFO L93 Difference]: Finished difference Result 36641 states and 68626 transitions. [2022-01-10 12:04:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:04:51,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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 [2022-01-10 12:04:51,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:52,052 INFO L225 Difference]: With dead ends: 36641 [2022-01-10 12:04:52,053 INFO L226 Difference]: Without dead ends: 27534 [2022-01-10 12:04:52,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:04:52,071 INFO L933 BasicCegarLoop]: 8674 mSDtfsCounter, 51527 mSDsluCounter, 25865 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51527 SdHoareTripleChecker+Valid, 34539 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:52,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51527 Valid, 34539 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:04:52,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27534 states. [2022-01-10 12:04:52,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27534 to 9252. [2022-01-10 12:04:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9252 states, 9248 states have (on average 1.8693771626297577) internal successors, (17288), 9251 states have internal predecessors, (17288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:52,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9252 states to 9252 states and 17288 transitions. [2022-01-10 12:04:52,623 INFO L78 Accepts]: Start accepts. Automaton has 9252 states and 17288 transitions. Word has length 71 [2022-01-10 12:04:52,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:52,623 INFO L470 AbstractCegarLoop]: Abstraction has 9252 states and 17288 transitions. [2022-01-10 12:04:52,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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) [2022-01-10 12:04:52,623 INFO L276 IsEmpty]: Start isEmpty. Operand 9252 states and 17288 transitions. [2022-01-10 12:04:52,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:04:52,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:52,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:52,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:04:52,626 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:52,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:52,626 INFO L85 PathProgramCache]: Analyzing trace with hash -765139986, now seen corresponding path program 1 times [2022-01-10 12:04:52,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:52,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231184400] [2022-01-10 12:04:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:52,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:52,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:52,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231184400] [2022-01-10 12:04:52,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231184400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:52,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:52,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:04:52,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692150273] [2022-01-10 12:04:52,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:52,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:04:52,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:52,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:04:52,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:04:52,710 INFO L87 Difference]: Start difference. First operand 9252 states and 17288 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 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) [2022-01-10 12:04:55,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:55,494 INFO L93 Difference]: Finished difference Result 54881 states and 102818 transitions. [2022-01-10 12:04:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 12:04:55,495 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 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 [2022-01-10 12:04:55,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:55,563 INFO L225 Difference]: With dead ends: 54881 [2022-01-10 12:04:55,563 INFO L226 Difference]: Without dead ends: 45774 [2022-01-10 12:04:55,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:04:55,574 INFO L933 BasicCegarLoop]: 17224 mSDtfsCounter, 60076 mSDsluCounter, 51570 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60076 SdHoareTripleChecker+Valid, 68794 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:55,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60076 Valid, 68794 Invalid, 95 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:04:55,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45774 states. [2022-01-10 12:04:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45774 to 9274. [2022-01-10 12:04:56,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9274 states, 9270 states have (on average 1.8681769147788565) internal successors, (17318), 9273 states have internal predecessors, (17318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9274 states to 9274 states and 17318 transitions. [2022-01-10 12:04:56,115 INFO L78 Accepts]: Start accepts. Automaton has 9274 states and 17318 transitions. Word has length 72 [2022-01-10 12:04:56,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:56,116 INFO L470 AbstractCegarLoop]: Abstraction has 9274 states and 17318 transitions. [2022-01-10 12:04:56,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 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) [2022-01-10 12:04:56,116 INFO L276 IsEmpty]: Start isEmpty. Operand 9274 states and 17318 transitions. [2022-01-10 12:04:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:04:56,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:56,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:56,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:04:56,119 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:56,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash 407212631, now seen corresponding path program 1 times [2022-01-10 12:04:56,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:56,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463807773] [2022-01-10 12:04:56,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:56,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:56,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:56,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463807773] [2022-01-10 12:04:56,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463807773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:56,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:56,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:04:56,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417718409] [2022-01-10 12:04:56,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:56,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:04:56,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:56,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:04:56,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:04:56,210 INFO L87 Difference]: Start difference. First operand 9274 states and 17318 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2022-01-10 12:04:56,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:56,806 INFO L93 Difference]: Finished difference Result 16252 states and 30348 transitions. [2022-01-10 12:04:56,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:04:56,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 [2022-01-10 12:04:56,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:56,817 INFO L225 Difference]: With dead ends: 16252 [2022-01-10 12:04:56,818 INFO L226 Difference]: Without dead ends: 9304 [2022-01-10 12:04:56,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:04:56,821 INFO L933 BasicCegarLoop]: 8621 mSDtfsCounter, 8774 mSDsluCounter, 8621 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8774 SdHoareTripleChecker+Valid, 17242 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:56,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8774 Valid, 17242 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:04:56,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9304 states. [2022-01-10 12:04:57,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9304 to 9271. [2022-01-10 12:04:57,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9271 states, 9267 states have (on average 1.8673788712636237) internal successors, (17305), 9270 states have internal predecessors, (17305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:57,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9271 states to 9271 states and 17305 transitions. [2022-01-10 12:04:57,214 INFO L78 Accepts]: Start accepts. Automaton has 9271 states and 17305 transitions. Word has length 72 [2022-01-10 12:04:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:57,214 INFO L470 AbstractCegarLoop]: Abstraction has 9271 states and 17305 transitions. [2022-01-10 12:04:57,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2022-01-10 12:04:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 9271 states and 17305 transitions. [2022-01-10 12:04:57,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:04:57,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:57,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:57,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:04:57,217 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:57,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:57,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1707760476, now seen corresponding path program 1 times [2022-01-10 12:04:57,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:57,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84532046] [2022-01-10 12:04:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:57,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:04:57,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:57,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84532046] [2022-01-10 12:04:57,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84532046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:57,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:57,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:04:57,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468853310] [2022-01-10 12:04:57,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:57,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:04:57,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:57,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:04:57,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:04:57,294 INFO L87 Difference]: Start difference. First operand 9271 states and 17305 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:59,501 INFO L93 Difference]: Finished difference Result 23708 states and 44271 transitions. [2022-01-10 12:04:59,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:04:59,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 12:04:59,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:59,527 INFO L225 Difference]: With dead ends: 23708 [2022-01-10 12:04:59,528 INFO L226 Difference]: Without dead ends: 17977 [2022-01-10 12:04:59,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:04:59,534 INFO L933 BasicCegarLoop]: 8437 mSDtfsCounter, 19408 mSDsluCounter, 28640 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19408 SdHoareTripleChecker+Valid, 37077 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:59,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19408 Valid, 37077 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 12:04:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17977 states. [2022-01-10 12:05:00,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17977 to 12711. [2022-01-10 12:05:00,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12711 states, 12707 states have (on average 1.849138270244747) internal successors, (23497), 12710 states have internal predecessors, (23497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 23497 transitions. [2022-01-10 12:05:00,137 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 23497 transitions. Word has length 73 [2022-01-10 12:05:00,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:00,137 INFO L470 AbstractCegarLoop]: Abstraction has 12711 states and 23497 transitions. [2022-01-10 12:05:00,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:00,137 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 23497 transitions. [2022-01-10 12:05:00,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 12:05:00,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:00,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:05:00,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:05:00,139 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:00,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1181624239, now seen corresponding path program 1 times [2022-01-10 12:05:00,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:00,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680583358] [2022-01-10 12:05:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:00,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:00,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:00,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680583358] [2022-01-10 12:05:00,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680583358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:00,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:00,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:05:00,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696697545] [2022-01-10 12:05:00,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:00,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:05:00,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:00,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:05:00,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:00,326 INFO L87 Difference]: Start difference. First operand 12711 states and 23497 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:02,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:02,103 INFO L93 Difference]: Finished difference Result 21307 states and 39479 transitions. [2022-01-10 12:05:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:05:02,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 12:05:02,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:02,139 INFO L225 Difference]: With dead ends: 21307 [2022-01-10 12:05:02,139 INFO L226 Difference]: Without dead ends: 21288 [2022-01-10 12:05:02,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:05:02,148 INFO L933 BasicCegarLoop]: 8066 mSDtfsCounter, 20964 mSDsluCounter, 16125 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20964 SdHoareTripleChecker+Valid, 24191 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:02,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20964 Valid, 24191 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:02,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21288 states. [2022-01-10 12:05:02,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21288 to 12723. [2022-01-10 12:05:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12723 states, 12719 states have (on average 1.8483371334224388) internal successors, (23509), 12722 states have internal predecessors, (23509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12723 states to 12723 states and 23509 transitions. [2022-01-10 12:05:02,955 INFO L78 Accepts]: Start accepts. Automaton has 12723 states and 23509 transitions. Word has length 74 [2022-01-10 12:05:02,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:02,956 INFO L470 AbstractCegarLoop]: Abstraction has 12723 states and 23509 transitions. [2022-01-10 12:05:02,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand 12723 states and 23509 transitions. [2022-01-10 12:05:02,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 12:05:02,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:02,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:05:02,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:05:02,958 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:02,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:02,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1381016301, now seen corresponding path program 1 times [2022-01-10 12:05:02,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:02,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610092560] [2022-01-10 12:05:02,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:02,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:03,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:03,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610092560] [2022-01-10 12:05:03,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610092560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:03,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:03,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:05:03,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487611323] [2022-01-10 12:05:03,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:03,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:03,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:03,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:03,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:03,053 INFO L87 Difference]: Start difference. First operand 12723 states and 23509 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:04,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:04,483 INFO L93 Difference]: Finished difference Result 32969 states and 61345 transitions. [2022-01-10 12:05:04,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:04,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-10 12:05:04,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:04,519 INFO L225 Difference]: With dead ends: 32969 [2022-01-10 12:05:04,520 INFO L226 Difference]: Without dead ends: 24366 [2022-01-10 12:05:04,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:04,532 INFO L933 BasicCegarLoop]: 8018 mSDtfsCounter, 7916 mSDsluCounter, 7285 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7916 SdHoareTripleChecker+Valid, 15303 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:04,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7916 Valid, 15303 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:04,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24366 states. [2022-01-10 12:05:05,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24366 to 18355. [2022-01-10 12:05:05,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18355 states, 18351 states have (on average 1.8520516593101193) internal successors, (33987), 18354 states have internal predecessors, (33987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:05,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18355 states to 18355 states and 33987 transitions. [2022-01-10 12:05:05,664 INFO L78 Accepts]: Start accepts. Automaton has 18355 states and 33987 transitions. Word has length 76 [2022-01-10 12:05:05,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:05,664 INFO L470 AbstractCegarLoop]: Abstraction has 18355 states and 33987 transitions. [2022-01-10 12:05:05,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:05,665 INFO L276 IsEmpty]: Start isEmpty. Operand 18355 states and 33987 transitions. [2022-01-10 12:05:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 12:05:05,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:05,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:05:05,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:05:05,670 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:05,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:05,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1656284204, now seen corresponding path program 1 times [2022-01-10 12:05:05,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:05,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135155872] [2022-01-10 12:05:05,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:05,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:05,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:05,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135155872] [2022-01-10 12:05:05,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135155872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:05,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:05,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:05:05,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258331126] [2022-01-10 12:05:05,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:05,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:05:05,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:05,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:05:05,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:05,741 INFO L87 Difference]: Start difference. First operand 18355 states and 33987 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:07,655 INFO L93 Difference]: Finished difference Result 36348 states and 66827 transitions. [2022-01-10 12:05:07,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:05:07,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-10 12:05:07,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:07,683 INFO L225 Difference]: With dead ends: 36348 [2022-01-10 12:05:07,683 INFO L226 Difference]: Without dead ends: 20701 [2022-01-10 12:05:07,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:05:07,693 INFO L933 BasicCegarLoop]: 9412 mSDtfsCounter, 14048 mSDsluCounter, 9436 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14048 SdHoareTripleChecker+Valid, 18848 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:07,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14048 Valid, 18848 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:07,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20701 states.