/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_spec13_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:52:15,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:52:15,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:52:15,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:52:15,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:52:15,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:52:15,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:52:15,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:52:15,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:52:15,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:52:15,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:52:15,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:52:15,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:52:15,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:52:15,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:52:15,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:52:15,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:52:15,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:52:15,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:52:15,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:52:15,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:52:15,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:52:15,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:52:15,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:52:15,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:52:15,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:52:15,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:52:15,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:52:15,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:52:15,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:52:15,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:52:15,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:52:15,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:52:15,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:52:15,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:52:15,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:52:15,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:52:15,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:52:15,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:52:15,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:52:15,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:52:15,877 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 17:52:15,901 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:52:15,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:52:15,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:52:15,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:52:15,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:52:15,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:52:15,903 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:52:15,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:52:15,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:52:15,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:52:15,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:52:15,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:52:15,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:52:15,904 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:52:15,905 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:52:15,905 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:52:15,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:52:15,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:52:15,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:52:15,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:52:15,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:52:15,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:52:15,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:52:15,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:52:15,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:52:15,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:52:15,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:52:15,906 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:52:15,907 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:52:15,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:52:15,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:52:15,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:52:15,908 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:52:15,908 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:52:16,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:52:16,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:52:16,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:52:16,123 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:52:16,123 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:52:16,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2022-01-10 17:52:16,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/127f117e2/1ccf4029288a4f208da017f00addcfeb/FLAG3a7dd99b2 [2022-01-10 17:52:16,613 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:52:16,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2022-01-10 17:52:16,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/127f117e2/1ccf4029288a4f208da017f00addcfeb/FLAG3a7dd99b2 [2022-01-10 17:52:16,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/127f117e2/1ccf4029288a4f208da017f00addcfeb [2022-01-10 17:52:16,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:52:16,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:52:16,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:52:16,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:52:16,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:52:16,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:52:16" (1/1) ... [2022-01-10 17:52:16,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c4cd168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:16, skipping insertion in model container [2022-01-10 17:52:16,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:52:16" (1/1) ... [2022-01-10 17:52:16,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:52:17,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:52:17,124 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_spec13_product22.cil.c[1811,1824] [2022-01-10 17:52:17,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:52:17,397 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:52:17,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:52:17,420 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_spec13_product22.cil.c[1811,1824] [2022-01-10 17:52:17,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:52:17,518 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:52:17,528 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_spec13_product22.cil.c[1811,1824] [2022-01-10 17:52:17,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:52:17,644 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:52:17,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:17 WrapperNode [2022-01-10 17:52:17,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:52:17,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:52:17,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:52:17,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:52:17,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:17" (1/1) ... [2022-01-10 17:52:17,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:17" (1/1) ... [2022-01-10 17:52:18,303 INFO L137 Inliner]: procedures = 94, calls = 344, calls flagged for inlining = 196, calls inlined = 1755, statements flattened = 63923 [2022-01-10 17:52:18,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:52:18,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:52:18,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:52:18,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:52:18,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:17" (1/1) ... [2022-01-10 17:52:18,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:17" (1/1) ... [2022-01-10 17:52:18,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:17" (1/1) ... [2022-01-10 17:52:18,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:17" (1/1) ... [2022-01-10 17:52:18,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:17" (1/1) ... [2022-01-10 17:52:19,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:17" (1/1) ... [2022-01-10 17:52:19,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:17" (1/1) ... [2022-01-10 17:52:19,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:52:19,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:52:19,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:52:19,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:52:19,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:17" (1/1) ... [2022-01-10 17:52:19,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:52:19,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:52:19,311 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 17:52:19,329 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 17:52:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:52:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:52:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:52:19,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:52:19,684 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:52:19,686 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:52:36,422 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:52:36,540 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:52:36,540 INFO L299 CfgBuilder]: Removed 61 assume(true) statements. [2022-01-10 17:52:36,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:52:36 BoogieIcfgContainer [2022-01-10 17:52:36,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:52:36,561 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:52:36,561 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:52:36,562 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:52:36,564 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:52:36" (1/1) ... [2022-01-10 17:52:39,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:52:39 BasicIcfg [2022-01-10 17:52:39,102 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:52:39,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:52:39,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:52:39,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:52:39,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:52:16" (1/4) ... [2022-01-10 17:52:39,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9aef2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:52:39, skipping insertion in model container [2022-01-10 17:52:39,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:17" (2/4) ... [2022-01-10 17:52:39,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9aef2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:52:39, skipping insertion in model container [2022-01-10 17:52:39,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:52:36" (3/4) ... [2022-01-10 17:52:39,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9aef2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:52:39, skipping insertion in model container [2022-01-10 17:52:39,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:52:39" (4/4) ... [2022-01-10 17:52:39,109 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.cTransformedIcfg [2022-01-10 17:52:39,113 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:52:39,113 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-01-10 17:52:39,183 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:52:39,189 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 17:52:39,190 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-01-10 17:52:39,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 17402 states, 17391 states have (on average 1.8845954804209073) internal successors, (32775), 17401 states have internal predecessors, (32775), 0 states have call successors, (0), 0 states 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 17:52:39,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 17:52:39,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:39,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:52:39,392 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:39,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:39,396 INFO L85 PathProgramCache]: Analyzing trace with hash 113257423, now seen corresponding path program 1 times [2022-01-10 17:52:39,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:39,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448795294] [2022-01-10 17:52:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:39,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:39,617 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 17:52:39,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:39,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448795294] [2022-01-10 17:52:39,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448795294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:39,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:39,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:52:39,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945938994] [2022-01-10 17:52:39,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:39,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:52:39,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:39,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:52:39,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:39,735 INFO L87 Difference]: Start difference. First operand has 17402 states, 17391 states have (on average 1.8845954804209073) internal successors, (32775), 17401 states have internal predecessors, (32775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:40,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:40,614 INFO L93 Difference]: Finished difference Result 41752 states and 78648 transitions. [2022-01-10 17:52:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:52:40,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-10 17:52:40,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:40,727 INFO L225 Difference]: With dead ends: 41752 [2022-01-10 17:52:40,727 INFO L226 Difference]: Without dead ends: 24349 [2022-01-10 17:52:40,752 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 17:52:40,754 INFO L933 BasicCegarLoop]: 45673 mSDtfsCounter, 32619 mSDsluCounter, 13081 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32619 SdHoareTripleChecker+Valid, 58754 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:40,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32619 Valid, 58754 Invalid, 37 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:52:40,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24349 states. [2022-01-10 17:52:41,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24349 to 17385. [2022-01-10 17:52:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17385 states, 17375 states have (on average 1.8774676258992806) internal successors, (32621), 17384 states have internal predecessors, (32621), 0 states have call successors, (0), 0 states 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 17:52:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17385 states to 17385 states and 32621 transitions. [2022-01-10 17:52:41,334 INFO L78 Accepts]: Start accepts. Automaton has 17385 states and 32621 transitions. Word has length 46 [2022-01-10 17:52:41,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:41,334 INFO L470 AbstractCegarLoop]: Abstraction has 17385 states and 32621 transitions. [2022-01-10 17:52:41,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:41,334 INFO L276 IsEmpty]: Start isEmpty. Operand 17385 states and 32621 transitions. [2022-01-10 17:52:41,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 17:52:41,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:41,337 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] [2022-01-10 17:52:41,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:52:41,338 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:41,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:41,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1803684060, now seen corresponding path program 1 times [2022-01-10 17:52:41,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:41,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910476793] [2022-01-10 17:52:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:41,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:41,446 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 17:52:41,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:41,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910476793] [2022-01-10 17:52:41,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910476793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:41,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:41,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:52:41,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78000431] [2022-01-10 17:52:41,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:41,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:52:41,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:41,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:52:41,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:41,455 INFO L87 Difference]: Start difference. First operand 17385 states and 32621 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 17:52:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:42,247 INFO L93 Difference]: Finished difference Result 41649 states and 78147 transitions. [2022-01-10 17:52:42,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:52:42,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-10 17:52:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:42,398 INFO L225 Difference]: With dead ends: 41649 [2022-01-10 17:52:42,399 INFO L226 Difference]: Without dead ends: 24313 [2022-01-10 17:52:42,419 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 17:52:42,420 INFO L933 BasicCegarLoop]: 45445 mSDtfsCounter, 32569 mSDsluCounter, 13022 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32569 SdHoareTripleChecker+Valid, 58467 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:42,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32569 Valid, 58467 Invalid, 181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 17:52:42,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24313 states. [2022-01-10 17:52:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24313 to 17385. [2022-01-10 17:52:42,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17385 states, 17375 states have (on average 1.8768920863309353) internal successors, (32611), 17384 states have internal predecessors, (32611), 0 states have call successors, (0), 0 states 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 17:52:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17385 states to 17385 states and 32611 transitions. [2022-01-10 17:52:42,857 INFO L78 Accepts]: Start accepts. Automaton has 17385 states and 32611 transitions. Word has length 48 [2022-01-10 17:52:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:42,857 INFO L470 AbstractCegarLoop]: Abstraction has 17385 states and 32611 transitions. [2022-01-10 17:52:42,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 17:52:42,858 INFO L276 IsEmpty]: Start isEmpty. Operand 17385 states and 32611 transitions. [2022-01-10 17:52:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 17:52:42,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:42,860 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] [2022-01-10 17:52:42,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:52:42,861 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:42,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1383026289, now seen corresponding path program 1 times [2022-01-10 17:52:42,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:42,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75331862] [2022-01-10 17:52:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:42,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:42,911 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 17:52:42,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:42,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75331862] [2022-01-10 17:52:42,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75331862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:42,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:42,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:52:42,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382444619] [2022-01-10 17:52:42,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:42,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:52:42,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:52:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:42,912 INFO L87 Difference]: Start difference. First operand 17385 states and 32611 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 17:52:43,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:43,594 INFO L93 Difference]: Finished difference Result 41715 states and 78258 transitions. [2022-01-10 17:52:43,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:52:43,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-01-10 17:52:43,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:43,643 INFO L225 Difference]: With dead ends: 41715 [2022-01-10 17:52:43,643 INFO L226 Difference]: Without dead ends: 24394 [2022-01-10 17:52:43,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:43,669 INFO L933 BasicCegarLoop]: 45745 mSDtfsCounter, 32577 mSDsluCounter, 13150 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32577 SdHoareTripleChecker+Valid, 58895 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:43,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32577 Valid, 58895 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:52:43,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24394 states. [2022-01-10 17:52:43,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24394 to 17385. [2022-01-10 17:52:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17385 states, 17375 states have (on average 1.8768345323741007) internal successors, (32610), 17384 states have internal predecessors, (32610), 0 states have call successors, (0), 0 states 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 17:52:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17385 states to 17385 states and 32610 transitions. [2022-01-10 17:52:44,124 INFO L78 Accepts]: Start accepts. Automaton has 17385 states and 32610 transitions. Word has length 50 [2022-01-10 17:52:44,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:44,124 INFO L470 AbstractCegarLoop]: Abstraction has 17385 states and 32610 transitions. [2022-01-10 17:52:44,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 17:52:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 17385 states and 32610 transitions. [2022-01-10 17:52:44,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 17:52:44,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:44,128 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] [2022-01-10 17:52:44,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:52:44,128 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:44,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:44,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1726869313, now seen corresponding path program 1 times [2022-01-10 17:52:44,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:44,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674357218] [2022-01-10 17:52:44,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:44,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:44,190 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 17:52:44,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:44,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674357218] [2022-01-10 17:52:44,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674357218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:44,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:44,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:52:44,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819562403] [2022-01-10 17:52:44,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:44,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:52:44,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:52:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:44,192 INFO L87 Difference]: Start difference. First operand 17385 states and 32610 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 17:52:45,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:45,045 INFO L93 Difference]: Finished difference Result 41614 states and 78065 transitions. [2022-01-10 17:52:45,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:52:45,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-10 17:52:45,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:45,096 INFO L225 Difference]: With dead ends: 41614 [2022-01-10 17:52:45,096 INFO L226 Difference]: Without dead ends: 24329 [2022-01-10 17:52:45,120 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 17:52:45,125 INFO L933 BasicCegarLoop]: 45574 mSDtfsCounter, 32447 mSDsluCounter, 13056 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32447 SdHoareTripleChecker+Valid, 58630 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:45,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32447 Valid, 58630 Invalid, 171 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 17:52:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24329 states. [2022-01-10 17:52:45,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24329 to 17385. [2022-01-10 17:52:45,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17385 states, 17375 states have (on average 1.8765467625899281) internal successors, (32605), 17384 states have internal predecessors, (32605), 0 states have call successors, (0), 0 states 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 17:52:45,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17385 states to 17385 states and 32605 transitions. [2022-01-10 17:52:45,584 INFO L78 Accepts]: Start accepts. Automaton has 17385 states and 32605 transitions. Word has length 51 [2022-01-10 17:52:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:45,585 INFO L470 AbstractCegarLoop]: Abstraction has 17385 states and 32605 transitions. [2022-01-10 17:52:45,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 17:52:45,585 INFO L276 IsEmpty]: Start isEmpty. Operand 17385 states and 32605 transitions. [2022-01-10 17:52:45,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 17:52:45,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:45,587 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] [2022-01-10 17:52:45,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:52:45,587 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:45,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:45,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1720940506, now seen corresponding path program 1 times [2022-01-10 17:52:45,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:45,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679599153] [2022-01-10 17:52:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:45,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:45,676 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 17:52:45,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:45,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679599153] [2022-01-10 17:52:45,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679599153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:45,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:45,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:52:45,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244187602] [2022-01-10 17:52:45,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:45,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:52:45,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:45,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:52:45,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:45,678 INFO L87 Difference]: Start difference. First operand 17385 states and 32605 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 17:52:46,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:46,433 INFO L93 Difference]: Finished difference Result 44474 states and 83494 transitions. [2022-01-10 17:52:46,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:52:46,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 17:52:46,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:46,489 INFO L225 Difference]: With dead ends: 44474 [2022-01-10 17:52:46,490 INFO L226 Difference]: Without dead ends: 30556 [2022-01-10 17:52:46,508 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 17:52:46,509 INFO L933 BasicCegarLoop]: 57353 mSDtfsCounter, 25669 mSDsluCounter, 31630 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25669 SdHoareTripleChecker+Valid, 88983 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:46,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25669 Valid, 88983 Invalid, 102 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:52:46,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30556 states. [2022-01-10 17:52:47,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30556 to 17255. [2022-01-10 17:52:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17255 states, 17245 states have (on average 1.8756161206146709) internal successors, (32345), 17254 states have internal predecessors, (32345), 0 states have call successors, (0), 0 states 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 17:52:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17255 states to 17255 states and 32345 transitions. [2022-01-10 17:52:47,060 INFO L78 Accepts]: Start accepts. Automaton has 17255 states and 32345 transitions. Word has length 52 [2022-01-10 17:52:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:47,061 INFO L470 AbstractCegarLoop]: Abstraction has 17255 states and 32345 transitions. [2022-01-10 17:52:47,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 17:52:47,061 INFO L276 IsEmpty]: Start isEmpty. Operand 17255 states and 32345 transitions. [2022-01-10 17:52:47,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 17:52:47,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:47,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:52:47,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:52:47,064 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:47,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:47,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2041641015, now seen corresponding path program 1 times [2022-01-10 17:52:47,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:47,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672532378] [2022-01-10 17:52:47,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:47,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:47,111 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 17:52:47,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:47,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672532378] [2022-01-10 17:52:47,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672532378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:47,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:47,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:52:47,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952443150] [2022-01-10 17:52:47,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:47,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:52:47,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:47,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:52:47,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:52:47,112 INFO L87 Difference]: Start difference. First operand 17255 states and 32345 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:48,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:48,299 INFO L93 Difference]: Finished difference Result 57582 states and 108160 transitions. [2022-01-10 17:52:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:52:48,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-10 17:52:48,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:48,383 INFO L225 Difference]: With dead ends: 57582 [2022-01-10 17:52:48,383 INFO L226 Difference]: Without dead ends: 43807 [2022-01-10 17:52:48,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:52:48,403 INFO L933 BasicCegarLoop]: 82281 mSDtfsCounter, 50946 mSDsluCounter, 87925 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50946 SdHoareTripleChecker+Valid, 170206 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:48,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50946 Valid, 170206 Invalid, 115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:52:48,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43807 states. [2022-01-10 17:52:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43807 to 17255. [2022-01-10 17:52:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17255 states, 17245 states have (on average 1.8750362423890983) internal successors, (32335), 17254 states have internal predecessors, (32335), 0 states have call successors, (0), 0 states 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 17:52:48,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17255 states to 17255 states and 32335 transitions. [2022-01-10 17:52:48,950 INFO L78 Accepts]: Start accepts. Automaton has 17255 states and 32335 transitions. Word has length 54 [2022-01-10 17:52:48,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:48,950 INFO L470 AbstractCegarLoop]: Abstraction has 17255 states and 32335 transitions. [2022-01-10 17:52:48,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:48,951 INFO L276 IsEmpty]: Start isEmpty. Operand 17255 states and 32335 transitions. [2022-01-10 17:52:48,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 17:52:48,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:48,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:52:48,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:52:48,955 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:48,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:48,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1127085033, now seen corresponding path program 1 times [2022-01-10 17:52:48,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:48,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267829724] [2022-01-10 17:52:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:48,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:49,034 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 17:52:49,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:49,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267829724] [2022-01-10 17:52:49,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267829724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:49,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:49,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:52:49,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119586058] [2022-01-10 17:52:49,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:49,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:52:49,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:49,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:52:49,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:52:49,035 INFO L87 Difference]: Start difference. First operand 17255 states and 32335 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:50,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:50,182 INFO L93 Difference]: Finished difference Result 58537 states and 109709 transitions. [2022-01-10 17:52:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:52:50,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-10 17:52:50,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:50,250 INFO L225 Difference]: With dead ends: 58537 [2022-01-10 17:52:50,251 INFO L226 Difference]: Without dead ends: 41313 [2022-01-10 17:52:50,274 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 17:52:50,275 INFO L933 BasicCegarLoop]: 64436 mSDtfsCounter, 58106 mSDsluCounter, 96646 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58106 SdHoareTripleChecker+Valid, 161082 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:50,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58106 Valid, 161082 Invalid, 104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:52:50,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41313 states. [2022-01-10 17:52:50,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41313 to 17263. [2022-01-10 17:52:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17263 states, 17253 states have (on average 1.8746304990436446) internal successors, (32343), 17262 states have internal predecessors, (32343), 0 states have call successors, (0), 0 states 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 17:52:50,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17263 states to 17263 states and 32343 transitions. [2022-01-10 17:52:50,861 INFO L78 Accepts]: Start accepts. Automaton has 17263 states and 32343 transitions. Word has length 55 [2022-01-10 17:52:50,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:50,861 INFO L470 AbstractCegarLoop]: Abstraction has 17263 states and 32343 transitions. [2022-01-10 17:52:50,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:50,861 INFO L276 IsEmpty]: Start isEmpty. Operand 17263 states and 32343 transitions. [2022-01-10 17:52:50,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 17:52:50,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:50,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:52:50,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:52:50,864 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:50,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:50,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1473717544, now seen corresponding path program 1 times [2022-01-10 17:52:50,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:50,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712487754] [2022-01-10 17:52:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:50,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:50,943 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 17:52:50,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:50,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712487754] [2022-01-10 17:52:50,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712487754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:50,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:50,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:52:50,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947950752] [2022-01-10 17:52:50,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:50,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:52:50,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:50,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:52:50,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:52:50,945 INFO L87 Difference]: Start difference. First operand 17263 states and 32343 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:51,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:51,622 INFO L93 Difference]: Finished difference Result 41355 states and 77491 transitions. [2022-01-10 17:52:51,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:52:51,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 17:52:51,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:51,662 INFO L225 Difference]: With dead ends: 41355 [2022-01-10 17:52:51,662 INFO L226 Difference]: Without dead ends: 24105 [2022-01-10 17:52:51,679 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 17:52:51,679 INFO L933 BasicCegarLoop]: 45155 mSDtfsCounter, 25883 mSDsluCounter, 51444 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25883 SdHoareTripleChecker+Valid, 96599 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:51,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25883 Valid, 96599 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:52:51,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24105 states. [2022-01-10 17:52:52,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24105 to 17211. [2022-01-10 17:52:52,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17211 states, 17201 states have (on average 1.8744259054706123) internal successors, (32242), 17210 states have internal predecessors, (32242), 0 states have call successors, (0), 0 states 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 17:52:52,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17211 states to 17211 states and 32242 transitions. [2022-01-10 17:52:52,236 INFO L78 Accepts]: Start accepts. Automaton has 17211 states and 32242 transitions. Word has length 56 [2022-01-10 17:52:52,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:52,236 INFO L470 AbstractCegarLoop]: Abstraction has 17211 states and 32242 transitions. [2022-01-10 17:52:52,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:52,236 INFO L276 IsEmpty]: Start isEmpty. Operand 17211 states and 32242 transitions. [2022-01-10 17:52:52,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 17:52:52,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:52,239 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] [2022-01-10 17:52:52,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:52:52,239 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:52,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:52,239 INFO L85 PathProgramCache]: Analyzing trace with hash -340245398, now seen corresponding path program 1 times [2022-01-10 17:52:52,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:52,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999252490] [2022-01-10 17:52:52,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:52,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:52,318 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 17:52:52,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:52,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999252490] [2022-01-10 17:52:52,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999252490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:52,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:52,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 17:52:52,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117192134] [2022-01-10 17:52:52,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:52,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 17:52:52,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:52,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 17:52:52,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:52:52,320 INFO L87 Difference]: Start difference. First operand 17211 states and 32242 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 17:52:54,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:54,596 INFO L93 Difference]: Finished difference Result 78874 states and 147829 transitions. [2022-01-10 17:52:54,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 17:52:54,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-10 17:52:54,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:54,707 INFO L225 Difference]: With dead ends: 78874 [2022-01-10 17:52:54,707 INFO L226 Difference]: Without dead ends: 61683 [2022-01-10 17:52:54,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 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 17:52:54,734 INFO L933 BasicCegarLoop]: 102696 mSDtfsCounter, 147863 mSDsluCounter, 96371 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147863 SdHoareTripleChecker+Valid, 199067 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:54,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147863 Valid, 199067 Invalid, 104 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [21 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:52:54,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61683 states. [2022-01-10 17:52:55,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61683 to 17202. [2022-01-10 17:52:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17202 states, 17192 states have (on average 1.8741275011633318) internal successors, (32220), 17201 states have internal predecessors, (32220), 0 states have call successors, (0), 0 states 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 17:52:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17202 states to 17202 states and 32220 transitions. [2022-01-10 17:52:55,637 INFO L78 Accepts]: Start accepts. Automaton has 17202 states and 32220 transitions. Word has length 57 [2022-01-10 17:52:55,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:55,637 INFO L470 AbstractCegarLoop]: Abstraction has 17202 states and 32220 transitions. [2022-01-10 17:52:55,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 17:52:55,638 INFO L276 IsEmpty]: Start isEmpty. Operand 17202 states and 32220 transitions. [2022-01-10 17:52:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 17:52:55,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:55,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:52:55,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 17:52:55,640 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:55,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:55,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1412511526, now seen corresponding path program 1 times [2022-01-10 17:52:55,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:55,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960424487] [2022-01-10 17:52:55,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:55,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:55,687 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 17:52:55,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:55,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960424487] [2022-01-10 17:52:55,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960424487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:55,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:55,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:52:55,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531018867] [2022-01-10 17:52:55,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:55,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:52:55,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:55,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:52:55,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:52:55,688 INFO L87 Difference]: Start difference. First operand 17202 states and 32220 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:57,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:57,235 INFO L93 Difference]: Finished difference Result 54876 states and 102833 transitions. [2022-01-10 17:52:57,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:52:57,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 17:52:57,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:57,290 INFO L225 Difference]: With dead ends: 54876 [2022-01-10 17:52:57,290 INFO L226 Difference]: Without dead ends: 37700 [2022-01-10 17:52:57,307 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 17:52:57,307 INFO L933 BasicCegarLoop]: 70570 mSDtfsCounter, 83579 mSDsluCounter, 57643 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83579 SdHoareTripleChecker+Valid, 128213 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:57,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83579 Valid, 128213 Invalid, 104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:52:57,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37700 states. [2022-01-10 17:52:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37700 to 17204. [2022-01-10 17:52:57,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17204 states, 17194 states have (on average 1.8739095033151099) internal successors, (32220), 17203 states have internal predecessors, (32220), 0 states have call successors, (0), 0 states 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 17:52:58,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17204 states to 17204 states and 32220 transitions. [2022-01-10 17:52:58,002 INFO L78 Accepts]: Start accepts. Automaton has 17204 states and 32220 transitions. Word has length 58 [2022-01-10 17:52:58,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:58,003 INFO L470 AbstractCegarLoop]: Abstraction has 17204 states and 32220 transitions. [2022-01-10 17:52:58,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:58,003 INFO L276 IsEmpty]: Start isEmpty. Operand 17204 states and 32220 transitions. [2022-01-10 17:52:58,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 17:52:58,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:58,012 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] [2022-01-10 17:52:58,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 17:52:58,012 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:58,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:58,013 INFO L85 PathProgramCache]: Analyzing trace with hash 124311809, now seen corresponding path program 1 times [2022-01-10 17:52:58,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:58,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866427046] [2022-01-10 17:52:58,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:58,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:58,060 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 17:52:58,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:58,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866427046] [2022-01-10 17:52:58,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866427046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:58,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:58,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:52:58,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533625873] [2022-01-10 17:52:58,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:58,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:52:58,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:58,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:52:58,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:52:58,061 INFO L87 Difference]: Start difference. First operand 17204 states and 32220 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 17:53:00,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:00,746 INFO L93 Difference]: Finished difference Result 75354 states and 141223 transitions. [2022-01-10 17:53:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:53:00,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-10 17:53:00,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:00,846 INFO L225 Difference]: With dead ends: 75354 [2022-01-10 17:53:00,846 INFO L226 Difference]: Without dead ends: 58176 [2022-01-10 17:53:00,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 17:53:00,872 INFO L933 BasicCegarLoop]: 108967 mSDtfsCounter, 102784 mSDsluCounter, 153636 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102784 SdHoareTripleChecker+Valid, 262603 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:53:00,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102784 Valid, 262603 Invalid, 121 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [16 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:53:00,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58176 states. [2022-01-10 17:53:01,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58176 to 17207. [2022-01-10 17:53:01,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17207 states, 17197 states have (on average 1.8736407512938302) internal successors, (32221), 17206 states have internal predecessors, (32221), 0 states have call successors, (0), 0 states 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 17:53:01,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17207 states to 17207 states and 32221 transitions. [2022-01-10 17:53:01,788 INFO L78 Accepts]: Start accepts. Automaton has 17207 states and 32221 transitions. Word has length 59 [2022-01-10 17:53:01,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:01,788 INFO L470 AbstractCegarLoop]: Abstraction has 17207 states and 32221 transitions. [2022-01-10 17:53:01,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 17:53:01,788 INFO L276 IsEmpty]: Start isEmpty. Operand 17207 states and 32221 transitions. [2022-01-10 17:53:01,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 17:53:01,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:01,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:53:01,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 17:53:01,790 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:53:01,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:01,790 INFO L85 PathProgramCache]: Analyzing trace with hash -548953709, now seen corresponding path program 1 times [2022-01-10 17:53:01,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:01,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144589939] [2022-01-10 17:53:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:01,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:01,841 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 17:53:01,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:01,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144589939] [2022-01-10 17:53:01,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144589939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:01,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:01,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 17:53:01,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915341509] [2022-01-10 17:53:01,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:01,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 17:53:01,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:01,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 17:53:01,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:53:01,842 INFO L87 Difference]: Start difference. First operand 17207 states and 32221 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:53:06,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:06,036 INFO L93 Difference]: Finished difference Result 95833 states and 179613 transitions. [2022-01-10 17:53:06,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 17:53:06,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 17:53:06,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:06,188 INFO L225 Difference]: With dead ends: 95833 [2022-01-10 17:53:06,188 INFO L226 Difference]: Without dead ends: 78652 [2022-01-10 17:53:06,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 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 17:53:06,218 INFO L933 BasicCegarLoop]: 147355 mSDtfsCounter, 147894 mSDsluCounter, 211213 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147894 SdHoareTripleChecker+Valid, 358568 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:53:06,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147894 Valid, 358568 Invalid, 140 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [18 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:53:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78652 states. [2022-01-10 17:53:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78652 to 17211. [2022-01-10 17:53:07,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17211 states, 17201 states have (on average 1.8733213185279927) internal successors, (32223), 17210 states have internal predecessors, (32223), 0 states have call successors, (0), 0 states 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 17:53:07,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17211 states to 17211 states and 32223 transitions. [2022-01-10 17:53:07,285 INFO L78 Accepts]: Start accepts. Automaton has 17211 states and 32223 transitions. Word has length 60 [2022-01-10 17:53:07,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:07,286 INFO L470 AbstractCegarLoop]: Abstraction has 17211 states and 32223 transitions. [2022-01-10 17:53:07,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:53:07,286 INFO L276 IsEmpty]: Start isEmpty. Operand 17211 states and 32223 transitions. [2022-01-10 17:53:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 17:53:07,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:07,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:53:07,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 17:53:07,288 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:53:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:07,288 INFO L85 PathProgramCache]: Analyzing trace with hash 660871758, now seen corresponding path program 1 times [2022-01-10 17:53:07,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:07,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7480690] [2022-01-10 17:53:07,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:07,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:07,345 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 17:53:07,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:07,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7480690] [2022-01-10 17:53:07,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7480690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:07,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:07,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:53:07,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376851942] [2022-01-10 17:53:07,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:07,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:53:07,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:53:07,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:53:07,346 INFO L87 Difference]: Start difference. First operand 17211 states and 32223 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:53:09,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:09,267 INFO L93 Difference]: Finished difference Result 54859 states and 102789 transitions. [2022-01-10 17:53:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:53:09,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 17:53:09,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:09,333 INFO L225 Difference]: With dead ends: 54859 [2022-01-10 17:53:09,333 INFO L226 Difference]: Without dead ends: 37707 [2022-01-10 17:53:09,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:53:09,359 INFO L933 BasicCegarLoop]: 51385 mSDtfsCounter, 83548 mSDsluCounter, 57678 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83548 SdHoareTripleChecker+Valid, 109063 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:53:09,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83548 Valid, 109063 Invalid, 49 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:53:09,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37707 states. [2022-01-10 17:53:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37707 to 17214. [2022-01-10 17:53:10,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17214 states, 17204 states have (on average 1.873169030458033) internal successors, (32226), 17213 states have internal predecessors, (32226), 0 states have call successors, (0), 0 states 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 17:53:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17214 states to 17214 states and 32226 transitions. [2022-01-10 17:53:10,239 INFO L78 Accepts]: Start accepts. Automaton has 17214 states and 32226 transitions. Word has length 61 [2022-01-10 17:53:10,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:10,239 INFO L470 AbstractCegarLoop]: Abstraction has 17214 states and 32226 transitions. [2022-01-10 17:53:10,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:53:10,239 INFO L276 IsEmpty]: Start isEmpty. Operand 17214 states and 32226 transitions. [2022-01-10 17:53:10,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 17:53:10,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:10,241 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] [2022-01-10 17:53:10,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 17:53:10,241 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:53:10,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:10,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1994865704, now seen corresponding path program 1 times [2022-01-10 17:53:10,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:10,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072116280] [2022-01-10 17:53:10,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:10,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:10,287 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 17:53:10,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:10,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072116280] [2022-01-10 17:53:10,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072116280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:10,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:10,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:53:10,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902098521] [2022-01-10 17:53:10,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:10,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:53:10,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:10,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:53:10,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:53:10,288 INFO L87 Difference]: Start difference. First operand 17214 states and 32226 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 17:53:11,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:11,356 INFO L93 Difference]: Finished difference Result 41252 states and 77266 transitions. [2022-01-10 17:53:11,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:53:11,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 17:53:11,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:11,398 INFO L225 Difference]: With dead ends: 41252 [2022-01-10 17:53:11,398 INFO L226 Difference]: Without dead ends: 24073 [2022-01-10 17:53:11,418 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 17:53:11,419 INFO L933 BasicCegarLoop]: 45070 mSDtfsCounter, 45068 mSDsluCounter, 38774 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45068 SdHoareTripleChecker+Valid, 83844 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:53:11,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45068 Valid, 83844 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:53:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24073 states. [2022-01-10 17:53:12,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24073 to 17191. [2022-01-10 17:53:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17191 states, 17181 states have (on average 1.8734066701588965) internal successors, (32187), 17190 states have internal predecessors, (32187), 0 states have call successors, (0), 0 states 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 17:53:12,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17191 states to 17191 states and 32187 transitions. [2022-01-10 17:53:12,278 INFO L78 Accepts]: Start accepts. Automaton has 17191 states and 32187 transitions. Word has length 62 [2022-01-10 17:53:12,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:12,278 INFO L470 AbstractCegarLoop]: Abstraction has 17191 states and 32187 transitions. [2022-01-10 17:53:12,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 17:53:12,278 INFO L276 IsEmpty]: Start isEmpty. Operand 17191 states and 32187 transitions. [2022-01-10 17:53:12,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 17:53:12,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:12,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:53:12,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 17:53:12,280 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:53:12,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:12,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1512545522, now seen corresponding path program 1 times [2022-01-10 17:53:12,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:12,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046588857] [2022-01-10 17:53:12,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:12,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:12,326 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 17:53:12,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:12,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046588857] [2022-01-10 17:53:12,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046588857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:12,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:12,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:53:12,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570058561] [2022-01-10 17:53:12,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:12,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:53:12,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:12,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:53:12,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:53:12,328 INFO L87 Difference]: Start difference. First operand 17191 states and 32187 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:53:15,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:15,077 INFO L93 Difference]: Finished difference Result 70710 states and 132783 transitions. [2022-01-10 17:53:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:53:15,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 17:53:15,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:15,185 INFO L225 Difference]: With dead ends: 70710 [2022-01-10 17:53:15,185 INFO L226 Difference]: Without dead ends: 56949 [2022-01-10 17:53:15,212 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 17:53:15,212 INFO L933 BasicCegarLoop]: 81963 mSDtfsCounter, 74782 mSDsluCounter, 113917 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74782 SdHoareTripleChecker+Valid, 195880 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:53:15,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74782 Valid, 195880 Invalid, 293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 17:53:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56949 states. [2022-01-10 17:53:16,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56949 to 17201. [2022-01-10 17:53:16,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17201 states, 17191 states have (on average 1.8728986097376534) internal successors, (32197), 17200 states have internal predecessors, (32197), 0 states have call successors, (0), 0 states 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 17:53:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17201 states to 17201 states and 32197 transitions. [2022-01-10 17:53:16,367 INFO L78 Accepts]: Start accepts. Automaton has 17201 states and 32197 transitions. Word has length 65 [2022-01-10 17:53:16,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:16,367 INFO L470 AbstractCegarLoop]: Abstraction has 17201 states and 32197 transitions. [2022-01-10 17:53:16,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:53:16,368 INFO L276 IsEmpty]: Start isEmpty. Operand 17201 states and 32197 transitions. [2022-01-10 17:53:16,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 17:53:16,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:16,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:53:16,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 17:53:16,370 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:53:16,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:16,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1445541055, now seen corresponding path program 1 times [2022-01-10 17:53:16,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:16,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83989012] [2022-01-10 17:53:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:16,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:16,426 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 17:53:16,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:16,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83989012] [2022-01-10 17:53:16,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83989012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:16,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:16,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:53:16,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727523377] [2022-01-10 17:53:16,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:16,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:53:16,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:16,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:53:16,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:53:16,427 INFO L87 Difference]: Start difference. First operand 17201 states and 32197 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)