/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_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:54:11,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:54:11,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:54:11,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:54:11,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:54:11,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:54:11,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:54:11,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:54:11,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:54:11,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:54:11,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:54:11,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:54:11,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:54:11,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:54:11,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:54:11,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:54:11,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:54:11,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:54:11,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:54:11,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:54:11,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:54:11,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:54:11,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:54:11,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:54:11,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:54:11,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:54:11,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:54:11,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:54:11,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:54:11,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:54:11,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:54:11,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:54:11,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:54:11,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:54:11,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:54:11,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:54:11,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:54:11,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:54:11,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:54:11,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:54:11,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:54:11,892 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 17:54:11,919 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:54:11,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:54:11,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:54:11,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:54:11,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:54:11,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:54:11,921 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:54:11,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:54:11,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:54:11,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:54:11,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:54:11,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:54:11,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:54:11,922 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:54:11,922 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:54:11,922 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:54:11,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:54:11,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:54:11,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:54:11,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:54:11,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:54:11,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:54:11,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:54:11,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:54:11,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:54:11,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:54:11,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:54:11,923 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:54:11,924 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:54:11,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:54:11,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:54:11,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:54:11,925 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:54:11,925 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:54:12,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:54:12,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:54:12,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:54:12,135 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:54:12,136 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:54:12,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product11.cil.c [2022-01-10 17:54:12,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b1080f16/0af0187d85fd4baa900a3537940f7ed8/FLAG7e860bfc5 [2022-01-10 17:54:12,635 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:54:12,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product11.cil.c [2022-01-10 17:54:12,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b1080f16/0af0187d85fd4baa900a3537940f7ed8/FLAG7e860bfc5 [2022-01-10 17:54:12,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b1080f16/0af0187d85fd4baa900a3537940f7ed8 [2022-01-10 17:54:12,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:54:12,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:54:12,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:54:12,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:54:12,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:54:12,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:54:12" (1/1) ... [2022-01-10 17:54:12,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65858159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:12, skipping insertion in model container [2022-01-10 17:54:12,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:54:12" (1/1) ... [2022-01-10 17:54:12,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:54:13,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:54:13,343 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_product11.cil.c[40826,40839] [2022-01-10 17:54:13,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:54:13,475 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:54:13,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:54:13,534 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_product11.cil.c[40826,40839] [2022-01-10 17:54:13,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:54:13,577 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:54:13,619 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_product11.cil.c[40826,40839] [2022-01-10 17:54:13,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:54:13,663 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:54:13,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:13 WrapperNode [2022-01-10 17:54:13,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:54:13,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:54:13,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:54:13,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:54:13,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:13" (1/1) ... [2022-01-10 17:54:13,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:13" (1/1) ... [2022-01-10 17:54:13,843 INFO L137 Inliner]: procedures = 95, calls = 339, calls flagged for inlining = 192, calls inlined = 276, statements flattened = 8603 [2022-01-10 17:54:13,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:54:13,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:54:13,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:54:13,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:54:13,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:13" (1/1) ... [2022-01-10 17:54:13,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:13" (1/1) ... [2022-01-10 17:54:13,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:13" (1/1) ... [2022-01-10 17:54:13,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:13" (1/1) ... [2022-01-10 17:54:13,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:13" (1/1) ... [2022-01-10 17:54:13,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:13" (1/1) ... [2022-01-10 17:54:14,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:13" (1/1) ... [2022-01-10 17:54:14,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:54:14,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:54:14,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:54:14,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:54:14,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:13" (1/1) ... [2022-01-10 17:54:14,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:54:14,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:54:14,071 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 17:54:14,081 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 17:54:14,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:54:14,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:54:14,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:54:14,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:54:14,233 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:54:14,234 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:54:18,170 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:54:18,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:54:18,249 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:54:18,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:54:18 BoogieIcfgContainer [2022-01-10 17:54:18,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:54:18,258 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:54:18,258 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:54:18,259 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:54:18,262 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:54:18" (1/1) ... [2022-01-10 17:54:18,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:54:18 BasicIcfg [2022-01-10 17:54:18,888 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:54:18,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:54:18,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:54:18,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:54:18,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:54:12" (1/4) ... [2022-01-10 17:54:18,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d97c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:54:18, skipping insertion in model container [2022-01-10 17:54:18,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:13" (2/4) ... [2022-01-10 17:54:18,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d97c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:54:18, skipping insertion in model container [2022-01-10 17:54:18,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:54:18" (3/4) ... [2022-01-10 17:54:18,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d97c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:54:18, skipping insertion in model container [2022-01-10 17:54:18,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:54:18" (4/4) ... [2022-01-10 17:54:18,894 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product11.cil.cTransformedIcfg [2022-01-10 17:54:18,899 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:54:18,899 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 17:54:18,943 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:54:18,948 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 17:54:18,948 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 17:54:18,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 2475 states, 2469 states have (on average 1.8687727825030376) internal successors, (4614), 2474 states have internal predecessors, (4614), 0 states have call successors, (0), 0 states 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 17:54:19,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 17:54:19,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:19,005 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 17:54:19,005 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 17:54:19,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:19,009 INFO L85 PathProgramCache]: Analyzing trace with hash -907861502, now seen corresponding path program 1 times [2022-01-10 17:54:19,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:19,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673241068] [2022-01-10 17:54:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:19,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:19,328 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 17:54:19,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:19,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673241068] [2022-01-10 17:54:19,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673241068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:19,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:19,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:19,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556312995] [2022-01-10 17:54:19,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:19,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:19,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:19,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:19,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:19,390 INFO L87 Difference]: Start difference. First operand has 2475 states, 2469 states have (on average 1.8687727825030376) internal successors, (4614), 2474 states have internal predecessors, (4614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:19,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:19,708 INFO L93 Difference]: Finished difference Result 7330 states and 13682 transitions. [2022-01-10 17:54:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:19,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 17:54:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:19,755 INFO L225 Difference]: With dead ends: 7330 [2022-01-10 17:54:19,755 INFO L226 Difference]: Without dead ends: 4857 [2022-01-10 17:54:19,768 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 17:54:19,775 INFO L933 BasicCegarLoop]: 9063 mSDtfsCounter, 4575 mSDsluCounter, 4481 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4575 SdHoareTripleChecker+Valid, 13544 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 17:54:19,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4575 Valid, 13544 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:19,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2022-01-10 17:54:20,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 2464. [2022-01-10 17:54:20,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2459 states have (on average 1.8666124440829606) internal successors, (4590), 2463 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states 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 17:54:20,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 4590 transitions. [2022-01-10 17:54:20,030 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 4590 transitions. Word has length 64 [2022-01-10 17:54:20,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:20,030 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 4590 transitions. [2022-01-10 17:54:20,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 4590 transitions. [2022-01-10 17:54:20,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 17:54:20,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:20,036 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 17:54:20,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:54:20,037 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 17:54:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:20,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1550514612, now seen corresponding path program 1 times [2022-01-10 17:54:20,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:20,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714217064] [2022-01-10 17:54:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:20,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:20,252 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 17:54:20,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:20,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714217064] [2022-01-10 17:54:20,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714217064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:20,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:20,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:20,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312628268] [2022-01-10 17:54:20,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:20,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:20,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:20,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:20,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:20,262 INFO L87 Difference]: Start difference. First operand 2464 states and 4590 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:20,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:20,549 INFO L93 Difference]: Finished difference Result 7235 states and 13490 transitions. [2022-01-10 17:54:20,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:20,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 17:54:20,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:20,571 INFO L225 Difference]: With dead ends: 7235 [2022-01-10 17:54:20,571 INFO L226 Difference]: Without dead ends: 4821 [2022-01-10 17:54:20,579 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 17:54:20,580 INFO L933 BasicCegarLoop]: 8926 mSDtfsCounter, 4477 mSDsluCounter, 4421 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4477 SdHoareTripleChecker+Valid, 13347 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 17:54:20,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4477 Valid, 13347 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2022-01-10 17:54:20,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 2464. [2022-01-10 17:54:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2459 states have (on average 1.8564457096380642) internal successors, (4565), 2463 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states 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 17:54:20,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 4565 transitions. [2022-01-10 17:54:20,669 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 4565 transitions. Word has length 71 [2022-01-10 17:54:20,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:20,671 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 4565 transitions. [2022-01-10 17:54:20,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:20,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 4565 transitions. [2022-01-10 17:54:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 17:54:20,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:20,684 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 17:54:20,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:54:20,684 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 17:54:20,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:20,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1577274261, now seen corresponding path program 1 times [2022-01-10 17:54:20,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:20,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880520363] [2022-01-10 17:54:20,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:20,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:20,805 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 17:54:20,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:20,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880520363] [2022-01-10 17:54:20,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880520363] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:20,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:20,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:20,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537327545] [2022-01-10 17:54:20,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:20,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:20,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:20,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:20,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:20,808 INFO L87 Difference]: Start difference. First operand 2464 states and 4565 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:20,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:20,898 INFO L93 Difference]: Finished difference Result 4857 states and 9032 transitions. [2022-01-10 17:54:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:20,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 17:54:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:20,910 INFO L225 Difference]: With dead ends: 4857 [2022-01-10 17:54:20,911 INFO L226 Difference]: Without dead ends: 2464 [2022-01-10 17:54:20,917 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 17:54:20,921 INFO L933 BasicCegarLoop]: 4546 mSDtfsCounter, 4554 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4554 SdHoareTripleChecker+Valid, 4553 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 17:54:20,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4554 Valid, 4553 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:20,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2022-01-10 17:54:20,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2464. [2022-01-10 17:54:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2459 states have (on average 1.8556323708824725) internal successors, (4563), 2463 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states 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 17:54:20,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 4563 transitions. [2022-01-10 17:54:20,985 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 4563 transitions. Word has length 74 [2022-01-10 17:54:20,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:20,986 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 4563 transitions. [2022-01-10 17:54:20,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:20,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 4563 transitions. [2022-01-10 17:54:21,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 17:54:21,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:21,008 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 17:54:21,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:54:21,009 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 17:54:21,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:21,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1993619781, now seen corresponding path program 1 times [2022-01-10 17:54:21,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:21,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352086421] [2022-01-10 17:54:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:21,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:21,131 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 17:54:21,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:21,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352086421] [2022-01-10 17:54:21,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352086421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:21,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:21,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:21,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945368913] [2022-01-10 17:54:21,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:21,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:21,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:21,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:21,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:21,134 INFO L87 Difference]: Start difference. First operand 2464 states and 4563 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 17:54:21,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:21,297 INFO L93 Difference]: Finished difference Result 4821 states and 8959 transitions. [2022-01-10 17:54:21,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:21,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 17:54:21,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:21,308 INFO L225 Difference]: With dead ends: 4821 [2022-01-10 17:54:21,308 INFO L226 Difference]: Without dead ends: 2464 [2022-01-10 17:54:21,311 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 17:54:21,317 INFO L933 BasicCegarLoop]: 4468 mSDtfsCounter, 4535 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4535 SdHoareTripleChecker+Valid, 4483 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 17:54:21,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4535 Valid, 4483 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2022-01-10 17:54:21,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2464. [2022-01-10 17:54:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2459 states have (on average 1.8515656771045141) internal successors, (4553), 2463 states have internal predecessors, (4553), 0 states have call successors, (0), 0 states 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 17:54:21,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 4553 transitions. [2022-01-10 17:54:21,388 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 4553 transitions. Word has length 76 [2022-01-10 17:54:21,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:21,389 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 4553 transitions. [2022-01-10 17:54:21,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 17:54:21,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 4553 transitions. [2022-01-10 17:54:21,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 17:54:21,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:21,391 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] [2022-01-10 17:54:21,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:54:21,392 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 17:54:21,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:21,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1644786767, now seen corresponding path program 1 times [2022-01-10 17:54:21,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:21,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670848917] [2022-01-10 17:54:21,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:21,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:21,479 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 17:54:21,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:21,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670848917] [2022-01-10 17:54:21,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670848917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:21,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:21,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:21,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691534317] [2022-01-10 17:54:21,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:21,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:21,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:21,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:21,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:21,481 INFO L87 Difference]: Start difference. First operand 2464 states and 4553 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 17:54:22,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:22,032 INFO L93 Difference]: Finished difference Result 8768 states and 16204 transitions. [2022-01-10 17:54:22,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:54:22,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 17:54:22,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:22,064 INFO L225 Difference]: With dead ends: 8768 [2022-01-10 17:54:22,064 INFO L226 Difference]: Without dead ends: 7562 [2022-01-10 17:54:22,068 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 17:54:22,069 INFO L933 BasicCegarLoop]: 8991 mSDtfsCounter, 9589 mSDsluCounter, 22709 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9589 SdHoareTripleChecker+Valid, 31700 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:22,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9589 Valid, 31700 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:22,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7562 states. [2022-01-10 17:54:22,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7562 to 3194. [2022-01-10 17:54:22,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 3189 states have (on average 1.8466603951081844) internal successors, (5889), 3193 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 5889 transitions. [2022-01-10 17:54:22,213 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 5889 transitions. Word has length 78 [2022-01-10 17:54:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:22,214 INFO L470 AbstractCegarLoop]: Abstraction has 3194 states and 5889 transitions. [2022-01-10 17:54:22,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 17:54:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 5889 transitions. [2022-01-10 17:54:22,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 17:54:22,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:22,218 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] [2022-01-10 17:54:22,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:54:22,218 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:22,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1899523312, now seen corresponding path program 1 times [2022-01-10 17:54:22,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:22,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655990993] [2022-01-10 17:54:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:22,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:22,300 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 17:54:22,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:22,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655990993] [2022-01-10 17:54:22,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655990993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:22,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:22,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:54:22,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335209659] [2022-01-10 17:54:22,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:22,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:22,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:22,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:22,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:22,302 INFO L87 Difference]: Start difference. First operand 3194 states and 5889 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 17:54:22,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:22,411 INFO L93 Difference]: Finished difference Result 4555 states and 8381 transitions. [2022-01-10 17:54:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:22,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 17:54:22,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:22,420 INFO L225 Difference]: With dead ends: 4555 [2022-01-10 17:54:22,420 INFO L226 Difference]: Without dead ends: 2621 [2022-01-10 17:54:22,423 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 17:54:22,423 INFO L933 BasicCegarLoop]: 4793 mSDtfsCounter, 3399 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3399 SdHoareTripleChecker+Valid, 6133 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:22,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3399 Valid, 6133 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:22,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2022-01-10 17:54:22,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2604. [2022-01-10 17:54:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2604 states, 2599 states have (on average 1.8426317814544055) internal successors, (4789), 2603 states have internal predecessors, (4789), 0 states have call successors, (0), 0 states 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 17:54:22,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 4789 transitions. [2022-01-10 17:54:22,501 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 4789 transitions. Word has length 78 [2022-01-10 17:54:22,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:22,501 INFO L470 AbstractCegarLoop]: Abstraction has 2604 states and 4789 transitions. [2022-01-10 17:54:22,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 17:54:22,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 4789 transitions. [2022-01-10 17:54:22,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 17:54:22,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:22,504 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] [2022-01-10 17:54:22,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:54:22,504 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 17:54:22,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:22,505 INFO L85 PathProgramCache]: Analyzing trace with hash -885198506, now seen corresponding path program 1 times [2022-01-10 17:54:22,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:22,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028599307] [2022-01-10 17:54:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:22,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:22,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:22,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028599307] [2022-01-10 17:54:22,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028599307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:22,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:22,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:22,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191409948] [2022-01-10 17:54:22,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:22,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:22,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:22,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:22,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:22,573 INFO L87 Difference]: Start difference. First operand 2604 states and 4789 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 17:54:22,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:22,738 INFO L93 Difference]: Finished difference Result 6485 states and 11973 transitions. [2022-01-10 17:54:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:22,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 17:54:22,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:22,759 INFO L225 Difference]: With dead ends: 6485 [2022-01-10 17:54:22,759 INFO L226 Difference]: Without dead ends: 5133 [2022-01-10 17:54:22,764 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 17:54:22,765 INFO L933 BasicCegarLoop]: 4549 mSDtfsCounter, 4478 mSDsluCounter, 4463 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4478 SdHoareTripleChecker+Valid, 9012 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 17:54:22,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4478 Valid, 9012 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:22,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5133 states. [2022-01-10 17:54:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5133 to 5131. [2022-01-10 17:54:22,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5126 states have (on average 1.8492001560671087) internal successors, (9479), 5130 states have internal predecessors, (9479), 0 states have call successors, (0), 0 states 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 17:54:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 9479 transitions. [2022-01-10 17:54:22,949 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 9479 transitions. Word has length 79 [2022-01-10 17:54:22,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:22,950 INFO L470 AbstractCegarLoop]: Abstraction has 5131 states and 9479 transitions. [2022-01-10 17:54:22,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 17:54:22,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 9479 transitions. [2022-01-10 17:54:22,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 17:54:22,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:22,956 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] [2022-01-10 17:54:22,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:54:22,956 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 17:54:22,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:22,957 INFO L85 PathProgramCache]: Analyzing trace with hash -568305230, now seen corresponding path program 1 times [2022-01-10 17:54:22,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:22,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783789682] [2022-01-10 17:54:22,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:22,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:23,057 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 17:54:23,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:23,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783789682] [2022-01-10 17:54:23,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783789682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:23,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:23,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:23,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654777275] [2022-01-10 17:54:23,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:23,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:23,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:23,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:23,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:23,059 INFO L87 Difference]: Start difference. First operand 5131 states and 9479 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 17:54:23,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:23,875 INFO L93 Difference]: Finished difference Result 30174 states and 55958 transitions. [2022-01-10 17:54:23,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 17:54:23,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 17:54:23,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:23,948 INFO L225 Difference]: With dead ends: 30174 [2022-01-10 17:54:23,949 INFO L226 Difference]: Without dead ends: 25072 [2022-01-10 17:54:23,967 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 17:54:23,968 INFO L933 BasicCegarLoop]: 17755 mSDtfsCounter, 13357 mSDsluCounter, 22203 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13357 SdHoareTripleChecker+Valid, 39958 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:23,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13357 Valid, 39958 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:23,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25072 states. [2022-01-10 17:54:24,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25072 to 5116. [2022-01-10 17:54:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5116 states, 5111 states have (on average 1.8507141459596947) internal successors, (9459), 5115 states have internal predecessors, (9459), 0 states have call successors, (0), 0 states 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 17:54:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5116 states to 5116 states and 9459 transitions. [2022-01-10 17:54:24,435 INFO L78 Accepts]: Start accepts. Automaton has 5116 states and 9459 transitions. Word has length 79 [2022-01-10 17:54:24,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:24,435 INFO L470 AbstractCegarLoop]: Abstraction has 5116 states and 9459 transitions. [2022-01-10 17:54:24,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 17:54:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5116 states and 9459 transitions. [2022-01-10 17:54:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 17:54:24,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:24,442 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] [2022-01-10 17:54:24,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:54:24,442 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 17:54:24,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:24,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1818536904, now seen corresponding path program 1 times [2022-01-10 17:54:24,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:24,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187854410] [2022-01-10 17:54:24,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:24,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:24,552 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 17:54:24,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:24,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187854410] [2022-01-10 17:54:24,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187854410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:24,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:24,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:54:24,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072725752] [2022-01-10 17:54:24,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:24,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:54:24,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:24,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:54:24,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:24,556 INFO L87 Difference]: Start difference. First operand 5116 states and 9459 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 17:54:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:25,605 INFO L93 Difference]: Finished difference Result 25122 states and 46596 transitions. [2022-01-10 17:54:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:54:25,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-10 17:54:25,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:25,664 INFO L225 Difference]: With dead ends: 25122 [2022-01-10 17:54:25,665 INFO L226 Difference]: Without dead ends: 20035 [2022-01-10 17:54:25,684 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 17:54:25,685 INFO L933 BasicCegarLoop]: 17645 mSDtfsCounter, 26670 mSDsluCounter, 17615 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26670 SdHoareTripleChecker+Valid, 35260 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:25,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26670 Valid, 35260 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:25,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20035 states. [2022-01-10 17:54:26,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20035 to 5116. [2022-01-10 17:54:26,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5116 states, 5111 states have (on average 1.8483662688319311) internal successors, (9447), 5115 states have internal predecessors, (9447), 0 states have call successors, (0), 0 states 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 17:54:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5116 states to 5116 states and 9447 transitions. [2022-01-10 17:54:26,062 INFO L78 Accepts]: Start accepts. Automaton has 5116 states and 9447 transitions. Word has length 81 [2022-01-10 17:54:26,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:26,062 INFO L470 AbstractCegarLoop]: Abstraction has 5116 states and 9447 transitions. [2022-01-10 17:54:26,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 17:54:26,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5116 states and 9447 transitions. [2022-01-10 17:54:26,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 17:54:26,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:26,067 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] [2022-01-10 17:54:26,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 17:54:26,067 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 17:54:26,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1717624937, now seen corresponding path program 1 times [2022-01-10 17:54:26,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:26,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409641612] [2022-01-10 17:54:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:26,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:26,128 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 17:54:26,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:26,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409641612] [2022-01-10 17:54:26,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409641612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:26,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:26,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:26,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717826677] [2022-01-10 17:54:26,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:26,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:26,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:26,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:26,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:26,130 INFO L87 Difference]: Start difference. First operand 5116 states and 9447 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 17:54:26,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:26,811 INFO L93 Difference]: Finished difference Result 20248 states and 37483 transitions. [2022-01-10 17:54:26,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:26,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-10 17:54:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:26,852 INFO L225 Difference]: With dead ends: 20248 [2022-01-10 17:54:26,852 INFO L226 Difference]: Without dead ends: 15155 [2022-01-10 17:54:26,862 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 17:54:26,863 INFO L933 BasicCegarLoop]: 4537 mSDtfsCounter, 13394 mSDsluCounter, 13350 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13394 SdHoareTripleChecker+Valid, 17887 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:26,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13394 Valid, 17887 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:26,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15155 states. [2022-01-10 17:54:27,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15155 to 5122. [2022-01-10 17:54:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5122 states, 5117 states have (on average 1.8469806527262067) internal successors, (9451), 5121 states have internal predecessors, (9451), 0 states have call successors, (0), 0 states 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 17:54:27,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5122 states to 5122 states and 9451 transitions. [2022-01-10 17:54:27,178 INFO L78 Accepts]: Start accepts. Automaton has 5122 states and 9451 transitions. Word has length 81 [2022-01-10 17:54:27,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:27,178 INFO L470 AbstractCegarLoop]: Abstraction has 5122 states and 9451 transitions. [2022-01-10 17:54:27,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 17:54:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand 5122 states and 9451 transitions. [2022-01-10 17:54:27,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 17:54:27,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:27,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:27,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 17:54:27,184 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 17:54:27,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:27,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1398893753, now seen corresponding path program 1 times [2022-01-10 17:54:27,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:27,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430409046] [2022-01-10 17:54:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:27,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:27,302 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 17:54:27,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:27,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430409046] [2022-01-10 17:54:27,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430409046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:27,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:27,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:54:27,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559044356] [2022-01-10 17:54:27,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:27,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:54:27,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:27,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:54:27,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:27,304 INFO L87 Difference]: Start difference. First operand 5122 states and 9451 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 17:54:28,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:28,115 INFO L93 Difference]: Finished difference Result 25183 states and 46649 transitions. [2022-01-10 17:54:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:54:28,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-10 17:54:28,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:28,168 INFO L225 Difference]: With dead ends: 25183 [2022-01-10 17:54:28,168 INFO L226 Difference]: Without dead ends: 20077 [2022-01-10 17:54:28,181 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 17:54:28,182 INFO L933 BasicCegarLoop]: 17714 mSDtfsCounter, 26648 mSDsluCounter, 17720 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26648 SdHoareTripleChecker+Valid, 35434 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:28,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26648 Valid, 35434 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20077 states. [2022-01-10 17:54:28,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20077 to 5114. [2022-01-10 17:54:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5114 states, 5109 states have (on average 1.8475239772949696) internal successors, (9439), 5113 states have internal predecessors, (9439), 0 states have call successors, (0), 0 states 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 17:54:28,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 9439 transitions. [2022-01-10 17:54:28,532 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 9439 transitions. Word has length 82 [2022-01-10 17:54:28,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:28,532 INFO L470 AbstractCegarLoop]: Abstraction has 5114 states and 9439 transitions. [2022-01-10 17:54:28,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 17:54:28,532 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 9439 transitions. [2022-01-10 17:54:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 17:54:28,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:28,536 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] [2022-01-10 17:54:28,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 17:54:28,537 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:28,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1678933983, now seen corresponding path program 1 times [2022-01-10 17:54:28,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:28,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888756957] [2022-01-10 17:54:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:28,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:28,613 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 17:54:28,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:28,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888756957] [2022-01-10 17:54:28,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888756957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:28,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:28,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:28,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297754979] [2022-01-10 17:54:28,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:28,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:28,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:28,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:28,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:28,615 INFO L87 Difference]: Start difference. First operand 5114 states and 9439 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 17:54:29,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:29,437 INFO L93 Difference]: Finished difference Result 20109 states and 37252 transitions. [2022-01-10 17:54:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:54:29,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 17:54:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:29,475 INFO L225 Difference]: With dead ends: 20109 [2022-01-10 17:54:29,475 INFO L226 Difference]: Without dead ends: 15036 [2022-01-10 17:54:29,488 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 17:54:29,490 INFO L933 BasicCegarLoop]: 4475 mSDtfsCounter, 22213 mSDsluCounter, 13187 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22213 SdHoareTripleChecker+Valid, 17662 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:29,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22213 Valid, 17662 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:29,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15036 states. [2022-01-10 17:54:29,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15036 to 5130. [2022-01-10 17:54:29,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5130 states, 5125 states have (on average 1.846439024390244) internal successors, (9463), 5129 states have internal predecessors, (9463), 0 states have call successors, (0), 0 states 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 17:54:29,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5130 states to 5130 states and 9463 transitions. [2022-01-10 17:54:29,858 INFO L78 Accepts]: Start accepts. Automaton has 5130 states and 9463 transitions. Word has length 83 [2022-01-10 17:54:29,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:29,859 INFO L470 AbstractCegarLoop]: Abstraction has 5130 states and 9463 transitions. [2022-01-10 17:54:29,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 17:54:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand 5130 states and 9463 transitions. [2022-01-10 17:54:29,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 17:54:29,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:29,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:54:29,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 17:54:29,864 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:29,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:29,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1072723855, now seen corresponding path program 1 times [2022-01-10 17:54:29,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:29,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030075519] [2022-01-10 17:54:29,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:29,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:29,944 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 17:54:29,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:29,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030075519] [2022-01-10 17:54:29,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030075519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:29,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:29,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:29,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388776052] [2022-01-10 17:54:29,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:29,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:29,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:29,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:29,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:29,961 INFO L87 Difference]: Start difference. First operand 5130 states and 9463 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 17:54:30,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:30,548 INFO L93 Difference]: Finished difference Result 15120 states and 27990 transitions. [2022-01-10 17:54:30,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:54:30,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 17:54:30,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:30,566 INFO L225 Difference]: With dead ends: 15120 [2022-01-10 17:54:30,566 INFO L226 Difference]: Without dead ends: 10083 [2022-01-10 17:54:30,574 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 17:54:30,574 INFO L933 BasicCegarLoop]: 4468 mSDtfsCounter, 13233 mSDsluCounter, 4466 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13233 SdHoareTripleChecker+Valid, 8934 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 17:54:30,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13233 Valid, 8934 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:30,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10083 states. [2022-01-10 17:54:30,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10083 to 5134. [2022-01-10 17:54:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5134 states, 5129 states have (on average 1.8451939949307856) internal successors, (9464), 5133 states have internal predecessors, (9464), 0 states have call successors, (0), 0 states 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 17:54:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5134 states to 5134 states and 9464 transitions. [2022-01-10 17:54:30,918 INFO L78 Accepts]: Start accepts. Automaton has 5134 states and 9464 transitions. Word has length 85 [2022-01-10 17:54:30,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:30,918 INFO L470 AbstractCegarLoop]: Abstraction has 5134 states and 9464 transitions. [2022-01-10 17:54:30,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 17:54:30,918 INFO L276 IsEmpty]: Start isEmpty. Operand 5134 states and 9464 transitions. [2022-01-10 17:54:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 17:54:30,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:30,922 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] [2022-01-10 17:54:30,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 17:54:30,923 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:30,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:30,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1831995240, now seen corresponding path program 1 times [2022-01-10 17:54:30,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:30,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556087083] [2022-01-10 17:54:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:30,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:31,036 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 17:54:31,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:31,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556087083] [2022-01-10 17:54:31,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556087083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:31,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:31,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:31,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472219569] [2022-01-10 17:54:31,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:31,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:31,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:31,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:31,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:31,038 INFO L87 Difference]: Start difference. First operand 5134 states and 9464 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 17:54:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:31,376 INFO L93 Difference]: Finished difference Result 10119 states and 18715 transitions. [2022-01-10 17:54:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:31,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-10 17:54:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:31,384 INFO L225 Difference]: With dead ends: 10119 [2022-01-10 17:54:31,384 INFO L226 Difference]: Without dead ends: 5086 [2022-01-10 17:54:31,390 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 17:54:31,391 INFO L933 BasicCegarLoop]: 4485 mSDtfsCounter, 8884 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8884 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:31,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8884 Valid, 4523 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:31,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2022-01-10 17:54:31,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 5086. [2022-01-10 17:54:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 5081 states have (on average 1.84806140523519) internal successors, (9390), 5085 states have internal predecessors, (9390), 0 states have call successors, (0), 0 states 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 17:54:31,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 9390 transitions. [2022-01-10 17:54:31,709 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 9390 transitions. Word has length 86 [2022-01-10 17:54:31,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:31,709 INFO L470 AbstractCegarLoop]: Abstraction has 5086 states and 9390 transitions. [2022-01-10 17:54:31,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 17:54:31,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 9390 transitions. [2022-01-10 17:54:31,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 17:54:31,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:31,713 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] [2022-01-10 17:54:31,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 17:54:31,714 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:31,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:31,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1480547975, now seen corresponding path program 1 times [2022-01-10 17:54:31,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:31,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298354347] [2022-01-10 17:54:31,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:31,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:31,821 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 17:54:31,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:31,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298354347] [2022-01-10 17:54:31,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298354347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:31,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:31,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:31,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687242732] [2022-01-10 17:54:31,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:31,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:31,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:31,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:31,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:31,823 INFO L87 Difference]: Start difference. First operand 5086 states and 9390 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 17:54:32,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:32,146 INFO L93 Difference]: Finished difference Result 7767 states and 14344 transitions. [2022-01-10 17:54:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:32,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 17:54:32,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:32,156 INFO L225 Difference]: With dead ends: 7767 [2022-01-10 17:54:32,156 INFO L226 Difference]: Without dead ends: 5068 [2022-01-10 17:54:32,161 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 17:54:32,162 INFO L933 BasicCegarLoop]: 4475 mSDtfsCounter, 4398 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4398 SdHoareTripleChecker+Valid, 4475 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:32,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4398 Valid, 4475 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:32,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5068 states. [2022-01-10 17:54:32,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5068 to 5068. [2022-01-10 17:54:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5068 states, 5064 states have (on average 1.8481437598736177) internal successors, (9359), 5067 states have internal predecessors, (9359), 0 states have call successors, (0), 0 states 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 17:54:32,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5068 states to 5068 states and 9359 transitions. [2022-01-10 17:54:32,478 INFO L78 Accepts]: Start accepts. Automaton has 5068 states and 9359 transitions. Word has length 87 [2022-01-10 17:54:32,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:32,478 INFO L470 AbstractCegarLoop]: Abstraction has 5068 states and 9359 transitions. [2022-01-10 17:54:32,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 17:54:32,478 INFO L276 IsEmpty]: Start isEmpty. Operand 5068 states and 9359 transitions. [2022-01-10 17:54:32,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 17:54:32,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:32,483 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] [2022-01-10 17:54:32,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 17:54:32,483 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 17:54:32,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:32,483 INFO L85 PathProgramCache]: Analyzing trace with hash -113881767, now seen corresponding path program 1 times [2022-01-10 17:54:32,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:32,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555781966] [2022-01-10 17:54:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:32,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:32,553 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 17:54:32,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:32,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555781966] [2022-01-10 17:54:32,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555781966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:32,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:32,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:32,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816148675] [2022-01-10 17:54:32,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:32,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:32,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:32,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:32,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:32,556 INFO L87 Difference]: Start difference. First operand 5068 states and 9359 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 17:54:32,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:32,940 INFO L93 Difference]: Finished difference Result 10023 states and 18561 transitions. [2022-01-10 17:54:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:54:32,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 17:54:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:32,947 INFO L225 Difference]: With dead ends: 10023 [2022-01-10 17:54:32,947 INFO L226 Difference]: Without dead ends: 5056 [2022-01-10 17:54:32,952 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 17:54:32,952 INFO L933 BasicCegarLoop]: 4458 mSDtfsCounter, 8836 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8836 SdHoareTripleChecker+Valid, 4547 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 17:54:32,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8836 Valid, 4547 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:32,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2022-01-10 17:54:33,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 5056. [2022-01-10 17:54:33,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5056 states, 5052 states have (on average 1.8485748218527316) internal successors, (9339), 5055 states have internal predecessors, (9339), 0 states have call successors, (0), 0 states 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 17:54:33,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5056 states to 5056 states and 9339 transitions. [2022-01-10 17:54:33,310 INFO L78 Accepts]: Start accepts. Automaton has 5056 states and 9339 transitions. Word has length 88 [2022-01-10 17:54:33,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:33,310 INFO L470 AbstractCegarLoop]: Abstraction has 5056 states and 9339 transitions. [2022-01-10 17:54:33,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 17:54:33,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5056 states and 9339 transitions. [2022-01-10 17:54:33,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 17:54:33,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:33,315 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] [2022-01-10 17:54:33,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 17:54:33,316 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 17:54:33,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:33,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1295676299, now seen corresponding path program 1 times [2022-01-10 17:54:33,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:33,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865009657] [2022-01-10 17:54:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:33,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:33,411 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 17:54:33,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:33,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865009657] [2022-01-10 17:54:33,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865009657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:33,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:33,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:54:33,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959103798] [2022-01-10 17:54:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:33,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:54:33,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:33,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:54:33,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:54:33,413 INFO L87 Difference]: Start difference. First operand 5056 states and 9339 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 17:54:33,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:33,747 INFO L93 Difference]: Finished difference Result 10049 states and 18587 transitions. [2022-01-10 17:54:33,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:54:33,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 17:54:33,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:33,755 INFO L225 Difference]: With dead ends: 10049 [2022-01-10 17:54:33,755 INFO L226 Difference]: Without dead ends: 5118 [2022-01-10 17:54:33,760 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 17:54:33,761 INFO L933 BasicCegarLoop]: 4481 mSDtfsCounter, 17731 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17731 SdHoareTripleChecker+Valid, 4597 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:33,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17731 Valid, 4597 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:33,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2022-01-10 17:54:34,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5056. [2022-01-10 17:54:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5056 states, 5052 states have (on average 1.848178939034046) internal successors, (9337), 5055 states have internal predecessors, (9337), 0 states have call successors, (0), 0 states 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 17:54:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5056 states to 5056 states and 9337 transitions. [2022-01-10 17:54:34,043 INFO L78 Accepts]: Start accepts. Automaton has 5056 states and 9337 transitions. Word has length 88 [2022-01-10 17:54:34,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:34,043 INFO L470 AbstractCegarLoop]: Abstraction has 5056 states and 9337 transitions. [2022-01-10 17:54:34,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 17:54:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5056 states and 9337 transitions. [2022-01-10 17:54:34,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 17:54:34,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:34,050 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] [2022-01-10 17:54:34,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 17:54:34,051 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 17:54:34,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:34,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1633630106, now seen corresponding path program 1 times [2022-01-10 17:54:34,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:34,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516870384] [2022-01-10 17:54:34,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:34,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:34,122 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 17:54:34,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:34,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516870384] [2022-01-10 17:54:34,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516870384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:34,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:34,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 17:54:34,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510603335] [2022-01-10 17:54:34,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:34,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 17:54:34,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:34,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 17:54:34,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:54:34,124 INFO L87 Difference]: Start difference. First operand 5056 states and 9337 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 17:54:34,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:34,954 INFO L93 Difference]: Finished difference Result 19937 states and 36949 transitions. [2022-01-10 17:54:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 17:54:34,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-01-10 17:54:34,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:34,977 INFO L225 Difference]: With dead ends: 19937 [2022-01-10 17:54:34,978 INFO L226 Difference]: Without dead ends: 15006 [2022-01-10 17:54:34,985 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 17:54:34,985 INFO L933 BasicCegarLoop]: 8845 mSDtfsCounter, 26512 mSDsluCounter, 13288 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26512 SdHoareTripleChecker+Valid, 22133 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 17:54:34,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26512 Valid, 22133 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:34,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15006 states. [2022-01-10 17:54:35,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15006 to 5076. [2022-01-10 17:54:35,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5076 states, 5072 states have (on average 1.8464116719242902) internal successors, (9365), 5075 states have internal predecessors, (9365), 0 states have call successors, (0), 0 states 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 17:54:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5076 states to 5076 states and 9365 transitions. [2022-01-10 17:54:35,303 INFO L78 Accepts]: Start accepts. Automaton has 5076 states and 9365 transitions. Word has length 89 [2022-01-10 17:54:35,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:35,303 INFO L470 AbstractCegarLoop]: Abstraction has 5076 states and 9365 transitions. [2022-01-10 17:54:35,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 17:54:35,303 INFO L276 IsEmpty]: Start isEmpty. Operand 5076 states and 9365 transitions. [2022-01-10 17:54:35,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 17:54:35,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:35,307 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 17:54:35,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 17:54:35,307 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 17:54:35,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:35,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1655576111, now seen corresponding path program 1 times [2022-01-10 17:54:35,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:35,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316998553] [2022-01-10 17:54:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:35,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:35,397 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 17:54:35,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:35,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316998553] [2022-01-10 17:54:35,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316998553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:35,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:35,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:35,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404538781] [2022-01-10 17:54:35,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:35,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:35,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:35,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:35,400 INFO L87 Difference]: Start difference. First operand 5076 states and 9365 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 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 17:54:35,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:35,807 INFO L93 Difference]: Finished difference Result 8968 states and 16539 transitions. [2022-01-10 17:54:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:35,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 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 17:54:35,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:35,817 INFO L225 Difference]: With dead ends: 8968 [2022-01-10 17:54:35,817 INFO L226 Difference]: Without dead ends: 5105 [2022-01-10 17:54:35,822 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 17:54:35,823 INFO L933 BasicCegarLoop]: 4432 mSDtfsCounter, 4577 mSDsluCounter, 4432 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4577 SdHoareTripleChecker+Valid, 8864 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:35,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4577 Valid, 8864 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5105 states. [2022-01-10 17:54:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5105 to 5073. [2022-01-10 17:54:36,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5073 states, 5069 states have (on average 1.845334385480371) internal successors, (9354), 5072 states have internal predecessors, (9354), 0 states have call successors, (0), 0 states 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 17:54:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 9354 transitions. [2022-01-10 17:54:36,135 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 9354 transitions. Word has length 90 [2022-01-10 17:54:36,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:36,135 INFO L470 AbstractCegarLoop]: Abstraction has 5073 states and 9354 transitions. [2022-01-10 17:54:36,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 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 17:54:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 9354 transitions. [2022-01-10 17:54:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 17:54:36,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:36,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:36,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 17:54:36,140 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 17:54:36,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:36,141 INFO L85 PathProgramCache]: Analyzing trace with hash -866145438, now seen corresponding path program 1 times [2022-01-10 17:54:36,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:36,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542763823] [2022-01-10 17:54:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:36,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:36,225 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 17:54:36,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:36,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542763823] [2022-01-10 17:54:36,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542763823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:36,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:36,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:36,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620211537] [2022-01-10 17:54:36,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:36,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:36,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:36,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:36,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:36,227 INFO L87 Difference]: Start difference. First operand 5073 states and 9354 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 17:54:37,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:37,555 INFO L93 Difference]: Finished difference Result 14113 states and 26116 transitions. [2022-01-10 17:54:37,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:54:37,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-01-10 17:54:37,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:37,574 INFO L225 Difference]: With dead ends: 14113 [2022-01-10 17:54:37,574 INFO L226 Difference]: Without dead ends: 9198 [2022-01-10 17:54:37,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:54:37,586 INFO L933 BasicCegarLoop]: 4489 mSDtfsCounter, 11693 mSDsluCounter, 3750 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11693 SdHoareTripleChecker+Valid, 8239 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:37,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11693 Valid, 8239 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 17:54:37,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9198 states. [2022-01-10 17:54:37,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9198 to 5073. [2022-01-10 17:54:37,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5073 states, 5069 states have (on average 1.8185046360228843) internal successors, (9218), 5072 states have internal predecessors, (9218), 0 states have call successors, (0), 0 states 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 17:54:37,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 9218 transitions. [2022-01-10 17:54:37,914 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 9218 transitions. Word has length 91 [2022-01-10 17:54:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:37,914 INFO L470 AbstractCegarLoop]: Abstraction has 5073 states and 9218 transitions. [2022-01-10 17:54:37,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 17:54:37,914 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 9218 transitions. [2022-01-10 17:54:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 17:54:37,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:37,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:37,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 17:54:37,950 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 17:54:37,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:37,951 INFO L85 PathProgramCache]: Analyzing trace with hash -787625532, now seen corresponding path program 1 times [2022-01-10 17:54:37,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:37,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085921775] [2022-01-10 17:54:37,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:37,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:38,040 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 17:54:38,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:38,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085921775] [2022-01-10 17:54:38,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085921775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:38,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:38,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:38,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622674863] [2022-01-10 17:54:38,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:38,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:54:38,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:38,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:54:38,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:54:38,045 INFO L87 Difference]: Start difference. First operand 5073 states and 9218 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 17:54:43,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:43,085 INFO L93 Difference]: Finished difference Result 52219 states and 96165 transitions. [2022-01-10 17:54:43,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 17:54:43,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 17:54:43,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:43,160 INFO L225 Difference]: With dead ends: 52219 [2022-01-10 17:54:43,160 INFO L226 Difference]: Without dead ends: 47340 [2022-01-10 17:54:43,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-01-10 17:54:43,177 INFO L933 BasicCegarLoop]: 20167 mSDtfsCounter, 28366 mSDsluCounter, 65378 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28366 SdHoareTripleChecker+Valid, 85545 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:43,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28366 Valid, 85545 Invalid, 2293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [143 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 17:54:43,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47340 states. [2022-01-10 17:54:43,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47340 to 9953. [2022-01-10 17:54:43,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9953 states, 9949 states have (on average 1.8223942104734143) internal successors, (18131), 9952 states have internal predecessors, (18131), 0 states have call successors, (0), 0 states 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 17:54:43,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9953 states to 9953 states and 18131 transitions. [2022-01-10 17:54:43,987 INFO L78 Accepts]: Start accepts. Automaton has 9953 states and 18131 transitions. Word has length 99 [2022-01-10 17:54:43,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:43,987 INFO L470 AbstractCegarLoop]: Abstraction has 9953 states and 18131 transitions. [2022-01-10 17:54:43,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 17:54:43,987 INFO L276 IsEmpty]: Start isEmpty. Operand 9953 states and 18131 transitions. [2022-01-10 17:54:43,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 17:54:43,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:43,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:43,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 17:54:43,995 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:43,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:43,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1567776431, now seen corresponding path program 1 times [2022-01-10 17:54:43,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:43,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88465588] [2022-01-10 17:54:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:43,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:44,091 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 17:54:44,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:44,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88465588] [2022-01-10 17:54:44,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88465588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:44,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:44,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 17:54:44,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909045518] [2022-01-10 17:54:44,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:44,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 17:54:44,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:44,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 17:54:44,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:54:44,093 INFO L87 Difference]: Start difference. First operand 9953 states and 18131 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 17:54:46,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:46,694 INFO L93 Difference]: Finished difference Result 46598 states and 85188 transitions. [2022-01-10 17:54:46,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:54:46,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-10 17:54:46,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:46,751 INFO L225 Difference]: With dead ends: 46598 [2022-01-10 17:54:46,751 INFO L226 Difference]: Without dead ends: 36839 [2022-01-10 17:54:46,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-01-10 17:54:46,767 INFO L933 BasicCegarLoop]: 15057 mSDtfsCounter, 21728 mSDsluCounter, 39031 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21728 SdHoareTripleChecker+Valid, 54088 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:46,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21728 Valid, 54088 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:46,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36839 states. [2022-01-10 17:54:47,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36839 to 9989. [2022-01-10 17:54:47,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9989 states, 9985 states have (on average 1.8203304957436155) internal successors, (18176), 9988 states have internal predecessors, (18176), 0 states have call successors, (0), 0 states 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 17:54:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9989 states to 9989 states and 18176 transitions. [2022-01-10 17:54:47,935 INFO L78 Accepts]: Start accepts. Automaton has 9989 states and 18176 transitions. Word has length 100 [2022-01-10 17:54:47,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:47,935 INFO L470 AbstractCegarLoop]: Abstraction has 9989 states and 18176 transitions. [2022-01-10 17:54:47,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 17:54:47,936 INFO L276 IsEmpty]: Start isEmpty. Operand 9989 states and 18176 transitions. [2022-01-10 17:54:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 17:54:47,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:47,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:47,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 17:54:47,943 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:47,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:47,943 INFO L85 PathProgramCache]: Analyzing trace with hash 618768238, now seen corresponding path program 1 times [2022-01-10 17:54:47,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:47,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672363379] [2022-01-10 17:54:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:47,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:48,025 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 17:54:48,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:48,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672363379] [2022-01-10 17:54:48,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672363379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:48,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:48,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:48,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336469074] [2022-01-10 17:54:48,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:48,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:48,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:48,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:48,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:48,027 INFO L87 Difference]: Start difference. First operand 9989 states and 18176 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 17:54:51,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:51,101 INFO L93 Difference]: Finished difference Result 39371 states and 71948 transitions. [2022-01-10 17:54:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:54:51,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-01-10 17:54:51,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:51,146 INFO L225 Difference]: With dead ends: 39371 [2022-01-10 17:54:51,146 INFO L226 Difference]: Without dead ends: 29750 [2022-01-10 17:54:51,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:51,159 INFO L933 BasicCegarLoop]: 9727 mSDtfsCounter, 15621 mSDsluCounter, 12771 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15621 SdHoareTripleChecker+Valid, 22498 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:51,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15621 Valid, 22498 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 17:54:51,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29750 states. [2022-01-10 17:54:51,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29750 to 10025. [2022-01-10 17:54:51,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10025 states, 10021 states have (on average 1.8173834946612115) internal successors, (18212), 10024 states have internal predecessors, (18212), 0 states have call successors, (0), 0 states 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 17:54:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10025 states to 10025 states and 18212 transitions. [2022-01-10 17:54:51,967 INFO L78 Accepts]: Start accepts. Automaton has 10025 states and 18212 transitions. Word has length 101 [2022-01-10 17:54:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:51,967 INFO L470 AbstractCegarLoop]: Abstraction has 10025 states and 18212 transitions. [2022-01-10 17:54:51,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 17:54:51,967 INFO L276 IsEmpty]: Start isEmpty. Operand 10025 states and 18212 transitions. [2022-01-10 17:54:51,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 17:54:51,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:51,972 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:51,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 17:54:51,972 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:51,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:51,973 INFO L85 PathProgramCache]: Analyzing trace with hash 125974202, now seen corresponding path program 1 times [2022-01-10 17:54:51,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:51,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439119556] [2022-01-10 17:54:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:51,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:52,053 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 17:54:52,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:52,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439119556] [2022-01-10 17:54:52,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439119556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:52,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:52,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:54:52,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089744037] [2022-01-10 17:54:52,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:52,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:54:52,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:52,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:54:52,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:54:52,055 INFO L87 Difference]: Start difference. First operand 10025 states and 18212 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 17:54:53,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:53,336 INFO L93 Difference]: Finished difference Result 24760 states and 45103 transitions. [2022-01-10 17:54:53,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:54:53,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-01-10 17:54:53,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:53,363 INFO L225 Difference]: With dead ends: 24760 [2022-01-10 17:54:53,363 INFO L226 Difference]: Without dead ends: 14833 [2022-01-10 17:54:53,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:54:53,379 INFO L933 BasicCegarLoop]: 6482 mSDtfsCounter, 12875 mSDsluCounter, 13100 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12875 SdHoareTripleChecker+Valid, 19582 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:53,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12875 Valid, 19582 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:53,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14833 states. [2022-01-10 17:54:54,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14833 to 9959. [2022-01-10 17:54:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9959 states, 9955 states have (on average 1.8198895027624309) internal successors, (18117), 9958 states have internal predecessors, (18117), 0 states have call successors, (0), 0 states 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 17:54:54,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9959 states to 9959 states and 18117 transitions. [2022-01-10 17:54:54,176 INFO L78 Accepts]: Start accepts. Automaton has 9959 states and 18117 transitions. Word has length 101 [2022-01-10 17:54:54,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:54,176 INFO L470 AbstractCegarLoop]: Abstraction has 9959 states and 18117 transitions. [2022-01-10 17:54:54,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 17:54:54,176 INFO L276 IsEmpty]: Start isEmpty. Operand 9959 states and 18117 transitions. [2022-01-10 17:54:54,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 17:54:54,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:54,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:54,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 17:54:54,183 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:54,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:54,183 INFO L85 PathProgramCache]: Analyzing trace with hash -635547010, now seen corresponding path program 1 times [2022-01-10 17:54:54,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:54,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958771689] [2022-01-10 17:54:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:54,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:54,292 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 17:54:54,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:54,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958771689] [2022-01-10 17:54:54,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958771689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:54,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:54,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:54,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662666292] [2022-01-10 17:54:54,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:54,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:54,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:54,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:54,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:54,294 INFO L87 Difference]: Start difference. First operand 9959 states and 18117 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 17:54:56,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:56,910 INFO L93 Difference]: Finished difference Result 33519 states and 61495 transitions. [2022-01-10 17:54:56,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:56,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 17:54:56,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:56,949 INFO L225 Difference]: With dead ends: 33519 [2022-01-10 17:54:56,949 INFO L226 Difference]: Without dead ends: 23784 [2022-01-10 17:54:56,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:54:56,961 INFO L933 BasicCegarLoop]: 10782 mSDtfsCounter, 7247 mSDsluCounter, 9024 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7247 SdHoareTripleChecker+Valid, 19806 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:56,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7247 Valid, 19806 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 17:54:56,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23784 states. [2022-01-10 17:54:58,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23784 to 13327. [2022-01-10 17:54:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13327 states, 13323 states have (on average 1.8053741649778579) internal successors, (24053), 13326 states have internal predecessors, (24053), 0 states have call successors, (0), 0 states 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 17:54:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13327 states to 13327 states and 24053 transitions. [2022-01-10 17:54:58,074 INFO L78 Accepts]: Start accepts. Automaton has 13327 states and 24053 transitions. Word has length 102 [2022-01-10 17:54:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:58,075 INFO L470 AbstractCegarLoop]: Abstraction has 13327 states and 24053 transitions. [2022-01-10 17:54:58,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 17:54:58,075 INFO L276 IsEmpty]: Start isEmpty. Operand 13327 states and 24053 transitions. [2022-01-10 17:54:58,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 17:54:58,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:58,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:58,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 17:54:58,080 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:58,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:58,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1997667876, now seen corresponding path program 1 times [2022-01-10 17:54:58,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:58,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568020339] [2022-01-10 17:54:58,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:58,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:58,184 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 17:54:58,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:58,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568020339] [2022-01-10 17:54:58,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568020339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:58,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:58,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 17:54:58,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571367991] [2022-01-10 17:54:58,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:58,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 17:54:58,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:58,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 17:54:58,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:54:58,187 INFO L87 Difference]: Start difference. First operand 13327 states and 24053 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 17:55:00,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:00,888 INFO L93 Difference]: Finished difference Result 46093 states and 83395 transitions. [2022-01-10 17:55:00,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 17:55:00,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 17:55:00,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:00,949 INFO L225 Difference]: With dead ends: 46093 [2022-01-10 17:55:00,949 INFO L226 Difference]: Without dead ends: 32928 [2022-01-10 17:55:00,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-10 17:55:00,966 INFO L933 BasicCegarLoop]: 11869 mSDtfsCounter, 27520 mSDsluCounter, 15910 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27520 SdHoareTripleChecker+Valid, 27779 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:00,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27520 Valid, 27779 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:00,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32928 states. [2022-01-10 17:55:02,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32928 to 13349. [2022-01-10 17:55:02,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13349 states, 13345 states have (on average 1.8044960659423004) internal successors, (24081), 13348 states have internal predecessors, (24081), 0 states have call successors, (0), 0 states 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 17:55:02,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13349 states to 13349 states and 24081 transitions. [2022-01-10 17:55:02,236 INFO L78 Accepts]: Start accepts. Automaton has 13349 states and 24081 transitions. Word has length 102 [2022-01-10 17:55:02,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:02,237 INFO L470 AbstractCegarLoop]: Abstraction has 13349 states and 24081 transitions. [2022-01-10 17:55:02,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 17:55:02,237 INFO L276 IsEmpty]: Start isEmpty. Operand 13349 states and 24081 transitions. [2022-01-10 17:55:02,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 17:55:02,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:02,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:02,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 17:55:02,244 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:02,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:02,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1404309131, now seen corresponding path program 1 times [2022-01-10 17:55:02,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:02,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453600520] [2022-01-10 17:55:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:02,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:02,331 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 17:55:02,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:02,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453600520] [2022-01-10 17:55:02,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453600520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:02,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:02,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:55:02,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213506083] [2022-01-10 17:55:02,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:02,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:55:02,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:02,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:55:02,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:55:02,333 INFO L87 Difference]: Start difference. First operand 13349 states and 24081 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 17:55:02,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:02,919 INFO L93 Difference]: Finished difference Result 19864 states and 35889 transitions. [2022-01-10 17:55:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 17:55:02,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-01-10 17:55:02,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:02,930 INFO L225 Difference]: With dead ends: 19864 [2022-01-10 17:55:02,931 INFO L226 Difference]: Without dead ends: 6603 [2022-01-10 17:55:02,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:55:02,941 INFO L933 BasicCegarLoop]: 3962 mSDtfsCounter, 7906 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7906 SdHoareTripleChecker+Valid, 4044 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:02,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7906 Valid, 4044 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:02,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2022-01-10 17:55:03,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 6603. [2022-01-10 17:55:03,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6603 states, 6599 states have (on average 1.8052735262918624) internal successors, (11913), 6602 states have internal predecessors, (11913), 0 states have call successors, (0), 0 states 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 17:55:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6603 states to 6603 states and 11913 transitions. [2022-01-10 17:55:03,542 INFO L78 Accepts]: Start accepts. Automaton has 6603 states and 11913 transitions. Word has length 103 [2022-01-10 17:55:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:03,542 INFO L470 AbstractCegarLoop]: Abstraction has 6603 states and 11913 transitions. [2022-01-10 17:55:03,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 17:55:03,542 INFO L276 IsEmpty]: Start isEmpty. Operand 6603 states and 11913 transitions. [2022-01-10 17:55:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 17:55:03,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:03,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:03,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 17:55:03,545 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:03,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:03,545 INFO L85 PathProgramCache]: Analyzing trace with hash 404158892, now seen corresponding path program 1 times [2022-01-10 17:55:03,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:03,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29513975] [2022-01-10 17:55:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:03,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:03,615 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 17:55:03,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:03,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29513975] [2022-01-10 17:55:03,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29513975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:03,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:03,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:55:03,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071758759] [2022-01-10 17:55:03,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:03,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:55:03,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:55:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:03,617 INFO L87 Difference]: Start difference. First operand 6603 states and 11913 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 17:55:06,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:06,966 INFO L93 Difference]: Finished difference Result 47167 states and 85709 transitions. [2022-01-10 17:55:06,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:55:06,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-10 17:55:06,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:07,040 INFO L225 Difference]: With dead ends: 47167 [2022-01-10 17:55:07,040 INFO L226 Difference]: Without dead ends: 40694 [2022-01-10 17:55:07,059 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 17:55:07,059 INFO L933 BasicCegarLoop]: 6211 mSDtfsCounter, 27879 mSDsluCounter, 18385 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27879 SdHoareTripleChecker+Valid, 24596 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:07,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27879 Valid, 24596 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:55:07,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40694 states. [2022-01-10 17:55:08,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40694 to 12045. [2022-01-10 17:55:08,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12045 states, 12041 states have (on average 1.8150485840046509) internal successors, (21855), 12044 states have internal predecessors, (21855), 0 states have call successors, (0), 0 states 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 17:55:08,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12045 states to 12045 states and 21855 transitions. [2022-01-10 17:55:08,269 INFO L78 Accepts]: Start accepts. Automaton has 12045 states and 21855 transitions. Word has length 104 [2022-01-10 17:55:08,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:08,269 INFO L470 AbstractCegarLoop]: Abstraction has 12045 states and 21855 transitions. [2022-01-10 17:55:08,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 17:55:08,269 INFO L276 IsEmpty]: Start isEmpty. Operand 12045 states and 21855 transitions. [2022-01-10 17:55:08,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 17:55:08,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:08,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:08,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 17:55:08,273 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:08,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:08,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2036962891, now seen corresponding path program 1 times [2022-01-10 17:55:08,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:08,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801740459] [2022-01-10 17:55:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:08,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:08,375 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 17:55:08,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:08,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801740459] [2022-01-10 17:55:08,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801740459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:08,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:08,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:55:08,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810671334] [2022-01-10 17:55:08,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:08,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:55:08,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:08,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:55:08,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:55:08,377 INFO L87 Difference]: Start difference. First operand 12045 states and 21855 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)