/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_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec7_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:59:29,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:59:29,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:59:29,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:59:29,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:59:29,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:59:29,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:59:29,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:59:29,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:59:29,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:59:29,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:59:29,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:59:29,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:59:29,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:59:29,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:59:29,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:59:29,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:59:29,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:59:29,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:59:29,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:59:29,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:59:29,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:59:29,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:59:29,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:59:29,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:59:29,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:59:29,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:59:29,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:59:29,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:59:29,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:59:29,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:59:29,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:59:29,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:59:29,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:59:29,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:59:29,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:59:29,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:59:29,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:59:29,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:59:29,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:59:29,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:59:29,880 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:59:29,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:59:29,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:59:29,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:59:29,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:59:29,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:59:29,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:59:29,910 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:59:29,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:59:29,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:59:29,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:59:29,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:59:29,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:59:29,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:59:29,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:59:29,918 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:59:29,918 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:59:29,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:59:29,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:59:29,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:59:29,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:59:29,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:59:29,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:59:29,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:59:29,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:59:29,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:59:29,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:59:29,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:59:29,920 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:59:29,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:59:29,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:59:29,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:59:29,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:59:29,922 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:59:29,922 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:59:30,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:59:30,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:59:30,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:59:30,125 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:59:30,125 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:59:30,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product34.cil.c [2022-01-10 23:59:30,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe23f500/cc9ace70b9d046f9973b4d85b86a49f2/FLAG5800fcdd2 [2022-01-10 23:59:30,655 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:59:30,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product34.cil.c [2022-01-10 23:59:30,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe23f500/cc9ace70b9d046f9973b4d85b86a49f2/FLAG5800fcdd2 [2022-01-10 23:59:30,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe23f500/cc9ace70b9d046f9973b4d85b86a49f2 [2022-01-10 23:59:30,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:59:30,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:59:30,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:59:30,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:59:30,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:59:30,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:59:30" (1/1) ... [2022-01-10 23:59:30,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@766f3578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:30, skipping insertion in model container [2022-01-10 23:59:30,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:59:30" (1/1) ... [2022-01-10 23:59:30,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:59:31,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:59:31,320 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/email_spec7_product34.cil.c[10988,11001] [2022-01-10 23:59:31,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:31,556 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:59:31,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:59:31,603 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/email_spec7_product34.cil.c[10988,11001] [2022-01-10 23:59:31,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:31,690 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:59:31,724 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/email_spec7_product34.cil.c[10988,11001] [2022-01-10 23:59:31,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:31,799 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:59:31,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:31 WrapperNode [2022-01-10 23:59:31,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:59:31,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:59:31,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:59:31,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:59:31,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:31" (1/1) ... [2022-01-10 23:59:31,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:31" (1/1) ... [2022-01-10 23:59:31,983 INFO L137 Inliner]: procedures = 136, calls = 234, calls flagged for inlining = 143, calls inlined = 430, statements flattened = 6500 [2022-01-10 23:59:31,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:59:31,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:59:31,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:59:31,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:59:31,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:31" (1/1) ... [2022-01-10 23:59:31,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:31" (1/1) ... [2022-01-10 23:59:32,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:31" (1/1) ... [2022-01-10 23:59:32,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:31" (1/1) ... [2022-01-10 23:59:32,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:31" (1/1) ... [2022-01-10 23:59:32,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:31" (1/1) ... [2022-01-10 23:59:32,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:31" (1/1) ... [2022-01-10 23:59:32,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:59:32,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:59:32,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:59:32,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:59:32,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:31" (1/1) ... [2022-01-10 23:59:32,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:59:32,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:59:32,152 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 23:59:32,157 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 23:59:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:59:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:59:32,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:59:32,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:59:32,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:59:32,431 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:59:32,432 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:59:34,828 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:59:34,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:59:34,848 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:59:34,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:34 BoogieIcfgContainer [2022-01-10 23:59:34,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:59:34,851 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:59:34,852 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:59:34,853 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:59:34,855 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:34" (1/1) ... [2022-01-10 23:59:35,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:59:35 BasicIcfg [2022-01-10 23:59:35,370 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:59:35,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:59:35,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:59:35,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:59:35,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:59:30" (1/4) ... [2022-01-10 23:59:35,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0d1e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:59:35, skipping insertion in model container [2022-01-10 23:59:35,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:31" (2/4) ... [2022-01-10 23:59:35,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0d1e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:59:35, skipping insertion in model container [2022-01-10 23:59:35,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:34" (3/4) ... [2022-01-10 23:59:35,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0d1e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:59:35, skipping insertion in model container [2022-01-10 23:59:35,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:59:35" (4/4) ... [2022-01-10 23:59:35,376 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product34.cil.cTransformedIcfg [2022-01-10 23:59:35,380 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:59:35,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 23:59:35,435 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:59:35,444 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 23:59:35,444 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 23:59:35,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 1356 states, 1349 states have (on average 1.664936990363232) internal successors, (2246), 1355 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states 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 23:59:35,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:59:35,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:35,496 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 23:59:35,497 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:35,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:35,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1651742696, now seen corresponding path program 1 times [2022-01-10 23:59:35,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:35,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313123668] [2022-01-10 23:59:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:35,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:35,879 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 23:59:35,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:35,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313123668] [2022-01-10 23:59:35,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313123668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:35,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:35,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:59:35,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632257261] [2022-01-10 23:59:35,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:35,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:59:35,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:35,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:59:35,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:59:35,912 INFO L87 Difference]: Start difference. First operand has 1356 states, 1349 states have (on average 1.664936990363232) internal successors, (2246), 1355 states have internal predecessors, (2246), 0 states have call successors, (0), 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 2 states, 2 states have (on average 31.0) internal successors, (62), 2 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 23:59:36,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:36,000 INFO L93 Difference]: Finished difference Result 2403 states and 3945 transitions. [2022-01-10 23:59:36,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:59:36,006 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 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 23:59:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:36,027 INFO L225 Difference]: With dead ends: 2403 [2022-01-10 23:59:36,027 INFO L226 Difference]: Without dead ends: 1162 [2022-01-10 23:59:36,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:59:36,040 INFO L933 BasicCegarLoop]: 2232 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:36,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-01-10 23:59:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1162. [2022-01-10 23:59:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1156 states have (on average 1.6773356401384083) internal successors, (1939), 1161 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states 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 23:59:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1939 transitions. [2022-01-10 23:59:36,121 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1939 transitions. Word has length 62 [2022-01-10 23:59:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:36,121 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1939 transitions. [2022-01-10 23:59:36,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 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 23:59:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1939 transitions. [2022-01-10 23:59:36,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:59:36,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:36,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:36,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:59:36,124 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:36,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:36,125 INFO L85 PathProgramCache]: Analyzing trace with hash -144819578, now seen corresponding path program 1 times [2022-01-10 23:59:36,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:36,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324764521] [2022-01-10 23:59:36,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:36,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:36,391 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 23:59:36,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:36,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324764521] [2022-01-10 23:59:36,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324764521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:36,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:36,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:59:36,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082607395] [2022-01-10 23:59:36,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:36,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:59:36,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:36,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:59:36,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:36,394 INFO L87 Difference]: Start difference. First operand 1162 states and 1939 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:36,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:36,529 INFO L93 Difference]: Finished difference Result 2305 states and 3850 transitions. [2022-01-10 23:59:36,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:59:36,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 23:59:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:36,537 INFO L225 Difference]: With dead ends: 2305 [2022-01-10 23:59:36,537 INFO L226 Difference]: Without dead ends: 1162 [2022-01-10 23:59:36,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 23:59:36,541 INFO L933 BasicCegarLoop]: 1918 mSDtfsCounter, 1914 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1914 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:36,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1914 Valid, 1931 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-01-10 23:59:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1162. [2022-01-10 23:59:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1156 states have (on average 1.67560553633218) internal successors, (1937), 1161 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states 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 23:59:36,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1937 transitions. [2022-01-10 23:59:36,590 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1937 transitions. Word has length 63 [2022-01-10 23:59:36,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:36,591 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1937 transitions. [2022-01-10 23:59:36,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:36,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1937 transitions. [2022-01-10 23:59:36,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:59:36,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:36,596 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 23:59:36,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:59:36,597 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:36,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:36,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1854514182, now seen corresponding path program 1 times [2022-01-10 23:59:36,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:36,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039943708] [2022-01-10 23:59:36,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:36,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:36,788 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 23:59:36,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:36,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039943708] [2022-01-10 23:59:36,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039943708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:36,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:36,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:36,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908500122] [2022-01-10 23:59:36,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:36,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:36,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:36,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:36,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:36,792 INFO L87 Difference]: Start difference. First operand 1162 states and 1937 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:37,206 INFO L93 Difference]: Finished difference Result 5678 states and 9481 transitions. [2022-01-10 23:59:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:59:37,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 23:59:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:37,225 INFO L225 Difference]: With dead ends: 5678 [2022-01-10 23:59:37,225 INFO L226 Difference]: Without dead ends: 4540 [2022-01-10 23:59:37,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:59:37,234 INFO L933 BasicCegarLoop]: 3797 mSDtfsCounter, 9468 mSDsluCounter, 5683 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9468 SdHoareTripleChecker+Valid, 9480 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:37,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9468 Valid, 9480 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:37,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4540 states. [2022-01-10 23:59:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4540 to 1162. [2022-01-10 23:59:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1156 states have (on average 1.6747404844290656) internal successors, (1936), 1161 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states 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 23:59:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1936 transitions. [2022-01-10 23:59:37,315 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1936 transitions. Word has length 65 [2022-01-10 23:59:37,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:37,316 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1936 transitions. [2022-01-10 23:59:37,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1936 transitions. [2022-01-10 23:59:37,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 23:59:37,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:37,318 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 23:59:37,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:59:37,319 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:37,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:37,319 INFO L85 PathProgramCache]: Analyzing trace with hash 259514318, now seen corresponding path program 1 times [2022-01-10 23:59:37,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:37,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467861147] [2022-01-10 23:59:37,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:37,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:37,452 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 23:59:37,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:37,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467861147] [2022-01-10 23:59:37,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467861147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:37,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:37,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:59:37,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9186382] [2022-01-10 23:59:37,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:37,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:59:37,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:37,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:59:37,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:37,456 INFO L87 Difference]: Start difference. First operand 1162 states and 1936 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:37,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:37,558 INFO L93 Difference]: Finished difference Result 2309 states and 3850 transitions. [2022-01-10 23:59:37,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:59:37,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 23:59:37,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:37,564 INFO L225 Difference]: With dead ends: 2309 [2022-01-10 23:59:37,564 INFO L226 Difference]: Without dead ends: 1176 [2022-01-10 23:59:37,567 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 23:59:37,574 INFO L933 BasicCegarLoop]: 1950 mSDtfsCounter, 1915 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:37,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 1972 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:37,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2022-01-10 23:59:37,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1162. [2022-01-10 23:59:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1156 states have (on average 1.6738754325259515) internal successors, (1935), 1161 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states 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 23:59:37,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1935 transitions. [2022-01-10 23:59:37,632 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1935 transitions. Word has length 66 [2022-01-10 23:59:37,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:37,633 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1935 transitions. [2022-01-10 23:59:37,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:37,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1935 transitions. [2022-01-10 23:59:37,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:59:37,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:37,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:37,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:59:37,639 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:37,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash 447695847, now seen corresponding path program 1 times [2022-01-10 23:59:37,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:37,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166577046] [2022-01-10 23:59:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:37,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:37,789 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 23:59:37,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:37,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166577046] [2022-01-10 23:59:37,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166577046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:37,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:37,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:37,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843663066] [2022-01-10 23:59:37,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:37,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:37,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:37,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:37,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:37,791 INFO L87 Difference]: Start difference. First operand 1162 states and 1935 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:38,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:38,035 INFO L93 Difference]: Finished difference Result 3420 states and 5705 transitions. [2022-01-10 23:59:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:59:38,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 23:59:38,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:38,044 INFO L225 Difference]: With dead ends: 3420 [2022-01-10 23:59:38,044 INFO L226 Difference]: Without dead ends: 2292 [2022-01-10 23:59:38,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:59:38,046 INFO L933 BasicCegarLoop]: 1944 mSDtfsCounter, 9391 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9391 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:38,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9391 Valid, 3902 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:38,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2022-01-10 23:59:38,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 1162. [2022-01-10 23:59:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1156 states have (on average 1.6721453287197232) internal successors, (1933), 1161 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states 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 23:59:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1933 transitions. [2022-01-10 23:59:38,122 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1933 transitions. Word has length 67 [2022-01-10 23:59:38,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:38,128 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1933 transitions. [2022-01-10 23:59:38,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:38,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1933 transitions. [2022-01-10 23:59:38,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:59:38,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:38,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:38,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:59:38,130 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:38,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:38,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1482578044, now seen corresponding path program 1 times [2022-01-10 23:59:38,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:38,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618314564] [2022-01-10 23:59:38,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:38,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:38,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:38,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618314564] [2022-01-10 23:59:38,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618314564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:38,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:38,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:38,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744604364] [2022-01-10 23:59:38,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:38,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:38,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:38,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:38,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:38,275 INFO L87 Difference]: Start difference. First operand 1162 states and 1933 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 23:59:39,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:39,272 INFO L93 Difference]: Finished difference Result 9596 states and 15714 transitions. [2022-01-10 23:59:39,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:59:39,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 23:59:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:39,308 INFO L225 Difference]: With dead ends: 9596 [2022-01-10 23:59:39,308 INFO L226 Difference]: Without dead ends: 8756 [2022-01-10 23:59:39,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:59:39,314 INFO L933 BasicCegarLoop]: 3773 mSDtfsCounter, 16498 mSDsluCounter, 13451 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16498 SdHoareTripleChecker+Valid, 17224 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:39,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16498 Valid, 17224 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:59:39,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8756 states. [2022-01-10 23:59:39,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8756 to 1977. [2022-01-10 23:59:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1971 states have (on average 1.67427701674277) internal successors, (3300), 1976 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states 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 23:59:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 3300 transitions. [2022-01-10 23:59:39,534 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 3300 transitions. Word has length 69 [2022-01-10 23:59:39,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:39,534 INFO L470 AbstractCegarLoop]: Abstraction has 1977 states and 3300 transitions. [2022-01-10 23:59:39,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 23:59:39,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 3300 transitions. [2022-01-10 23:59:39,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:59:39,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:39,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:39,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:59:39,537 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1298635938, now seen corresponding path program 1 times [2022-01-10 23:59:39,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:39,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277470680] [2022-01-10 23:59:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:39,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:39,676 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 23:59:39,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:39,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277470680] [2022-01-10 23:59:39,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277470680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:39,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:39,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:39,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682606247] [2022-01-10 23:59:39,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:39,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:39,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:39,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:39,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:39,678 INFO L87 Difference]: Start difference. First operand 1977 states and 3300 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:40,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:40,026 INFO L93 Difference]: Finished difference Result 4474 states and 7338 transitions. [2022-01-10 23:59:40,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:59:40,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 23:59:40,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:40,053 INFO L225 Difference]: With dead ends: 4474 [2022-01-10 23:59:40,054 INFO L226 Difference]: Without dead ends: 3113 [2022-01-10 23:59:40,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:59:40,057 INFO L933 BasicCegarLoop]: 1915 mSDtfsCounter, 6981 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6981 SdHoareTripleChecker+Valid, 4138 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:40,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6981 Valid, 4138 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2022-01-10 23:59:40,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 1977. [2022-01-10 23:59:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1971 states have (on average 1.6722475900558091) internal successors, (3296), 1976 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states 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 23:59:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 3296 transitions. [2022-01-10 23:59:40,278 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 3296 transitions. Word has length 70 [2022-01-10 23:59:40,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:40,278 INFO L470 AbstractCegarLoop]: Abstraction has 1977 states and 3296 transitions. [2022-01-10 23:59:40,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:40,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 3296 transitions. [2022-01-10 23:59:40,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:59:40,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:40,280 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, 1, 1, 1, 1, 1] [2022-01-10 23:59:40,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:59:40,281 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:40,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:40,281 INFO L85 PathProgramCache]: Analyzing trace with hash -258762104, now seen corresponding path program 1 times [2022-01-10 23:59:40,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:40,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617103541] [2022-01-10 23:59:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:40,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:40,366 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 23:59:40,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:40,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617103541] [2022-01-10 23:59:40,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617103541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:40,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:40,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:40,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934002743] [2022-01-10 23:59:40,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:40,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:40,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:40,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:40,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:40,368 INFO L87 Difference]: Start difference. First operand 1977 states and 3296 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:40,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:40,737 INFO L93 Difference]: Finished difference Result 5808 states and 9717 transitions. [2022-01-10 23:59:40,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:59:40,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 23:59:40,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:40,762 INFO L225 Difference]: With dead ends: 5808 [2022-01-10 23:59:40,762 INFO L226 Difference]: Without dead ends: 3868 [2022-01-10 23:59:40,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:59:40,768 INFO L933 BasicCegarLoop]: 3765 mSDtfsCounter, 5730 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5730 SdHoareTripleChecker+Valid, 5649 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:40,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5730 Valid, 5649 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:40,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2022-01-10 23:59:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 1977. [2022-01-10 23:59:40,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1971 states have (on average 1.6712328767123288) internal successors, (3294), 1976 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states 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 23:59:40,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 3294 transitions. [2022-01-10 23:59:40,928 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 3294 transitions. Word has length 70 [2022-01-10 23:59:40,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:40,928 INFO L470 AbstractCegarLoop]: Abstraction has 1977 states and 3294 transitions. [2022-01-10 23:59:40,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:40,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 3294 transitions. [2022-01-10 23:59:40,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:59:40,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:40,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:40,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:59:40,931 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:40,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash 300976211, now seen corresponding path program 1 times [2022-01-10 23:59:40,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:40,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132256577] [2022-01-10 23:59:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:40,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:41,065 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 23:59:41,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:41,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132256577] [2022-01-10 23:59:41,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132256577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:41,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:41,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:41,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105124778] [2022-01-10 23:59:41,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:41,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:59:41,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:41,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:59:41,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:59:41,068 INFO L87 Difference]: Start difference. First operand 1977 states and 3294 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:42,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:43,000 INFO L93 Difference]: Finished difference Result 10655 states and 17212 transitions. [2022-01-10 23:59:43,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:59:43,000 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 23:59:43,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:43,020 INFO L225 Difference]: With dead ends: 10655 [2022-01-10 23:59:43,020 INFO L226 Difference]: Without dead ends: 9410 [2022-01-10 23:59:43,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:59:43,024 INFO L933 BasicCegarLoop]: 3150 mSDtfsCounter, 18410 mSDsluCounter, 15795 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18410 SdHoareTripleChecker+Valid, 18945 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:43,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18410 Valid, 18945 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 23:59:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9410 states. [2022-01-10 23:59:43,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9410 to 3787. [2022-01-10 23:59:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3787 states, 3781 states have (on average 1.6757471568368156) internal successors, (6336), 3786 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 23:59:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3787 states to 3787 states and 6336 transitions. [2022-01-10 23:59:43,383 INFO L78 Accepts]: Start accepts. Automaton has 3787 states and 6336 transitions. Word has length 71 [2022-01-10 23:59:43,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:43,383 INFO L470 AbstractCegarLoop]: Abstraction has 3787 states and 6336 transitions. [2022-01-10 23:59:43,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:43,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3787 states and 6336 transitions. [2022-01-10 23:59:43,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:59:43,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:43,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:43,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:59:43,387 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:43,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:43,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1724290763, now seen corresponding path program 1 times [2022-01-10 23:59:43,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:43,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959870536] [2022-01-10 23:59:43,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:43,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:43,521 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 23:59:43,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:43,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959870536] [2022-01-10 23:59:43,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959870536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:43,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:43,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:43,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159693922] [2022-01-10 23:59:43,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:43,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:43,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:43,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:43,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:43,523 INFO L87 Difference]: Start difference. First operand 3787 states and 6336 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:45,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:45,001 INFO L93 Difference]: Finished difference Result 13675 states and 22276 transitions. [2022-01-10 23:59:45,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:59:45,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 23:59:45,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:45,028 INFO L225 Difference]: With dead ends: 13675 [2022-01-10 23:59:45,029 INFO L226 Difference]: Without dead ends: 11302 [2022-01-10 23:59:45,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:59:45,034 INFO L933 BasicCegarLoop]: 2827 mSDtfsCounter, 5948 mSDsluCounter, 5690 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5948 SdHoareTripleChecker+Valid, 8517 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:45,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5948 Valid, 8517 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 23:59:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11302 states. [2022-01-10 23:59:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11302 to 6850. [2022-01-10 23:59:45,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6850 states, 6844 states have (on average 1.6648158971361777) internal successors, (11394), 6849 states have internal predecessors, (11394), 0 states have call successors, (0), 0 states 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 23:59:45,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6850 states to 6850 states and 11394 transitions. [2022-01-10 23:59:45,714 INFO L78 Accepts]: Start accepts. Automaton has 6850 states and 11394 transitions. Word has length 72 [2022-01-10 23:59:45,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:45,714 INFO L470 AbstractCegarLoop]: Abstraction has 6850 states and 11394 transitions. [2022-01-10 23:59:45,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:45,714 INFO L276 IsEmpty]: Start isEmpty. Operand 6850 states and 11394 transitions. [2022-01-10 23:59:45,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:59:45,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:45,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:45,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:59:45,720 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:45,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:45,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2133114988, now seen corresponding path program 1 times [2022-01-10 23:59:45,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:45,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40440849] [2022-01-10 23:59:45,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:45,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:45,874 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 23:59:45,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:45,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40440849] [2022-01-10 23:59:45,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40440849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:45,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:45,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:45,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936222465] [2022-01-10 23:59:45,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:45,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:59:45,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:45,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:59:45,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:59:45,877 INFO L87 Difference]: Start difference. First operand 6850 states and 11394 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:48,338 INFO L93 Difference]: Finished difference Result 23731 states and 38249 transitions. [2022-01-10 23:59:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:59:48,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 23:59:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:48,378 INFO L225 Difference]: With dead ends: 23731 [2022-01-10 23:59:48,379 INFO L226 Difference]: Without dead ends: 19755 [2022-01-10 23:59:48,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:59:48,389 INFO L933 BasicCegarLoop]: 4353 mSDtfsCounter, 11440 mSDsluCounter, 15712 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11440 SdHoareTripleChecker+Valid, 20065 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:48,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11440 Valid, 20065 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 23:59:48,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19755 states. [2022-01-10 23:59:49,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19755 to 8203. [2022-01-10 23:59:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8203 states, 8197 states have (on average 1.6564596803708673) internal successors, (13578), 8202 states have internal predecessors, (13578), 0 states have call successors, (0), 0 states 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 23:59:49,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8203 states to 8203 states and 13578 transitions. [2022-01-10 23:59:49,224 INFO L78 Accepts]: Start accepts. Automaton has 8203 states and 13578 transitions. Word has length 72 [2022-01-10 23:59:49,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:49,225 INFO L470 AbstractCegarLoop]: Abstraction has 8203 states and 13578 transitions. [2022-01-10 23:59:49,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:49,225 INFO L276 IsEmpty]: Start isEmpty. Operand 8203 states and 13578 transitions. [2022-01-10 23:59:49,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:59:49,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:49,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:49,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:59:49,231 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:49,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:49,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1743196582, now seen corresponding path program 1 times [2022-01-10 23:59:49,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:49,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959709169] [2022-01-10 23:59:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:49,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:49,310 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 23:59:49,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:49,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959709169] [2022-01-10 23:59:49,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959709169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:49,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:49,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:49,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125547234] [2022-01-10 23:59:49,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:49,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:59:49,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:49,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:59:49,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:59:49,312 INFO L87 Difference]: Start difference. First operand 8203 states and 13578 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:50,519 INFO L93 Difference]: Finished difference Result 13058 states and 21376 transitions. [2022-01-10 23:59:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:59:50,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 23:59:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:50,536 INFO L225 Difference]: With dead ends: 13058 [2022-01-10 23:59:50,537 INFO L226 Difference]: Without dead ends: 10434 [2022-01-10 23:59:50,543 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 23:59:50,543 INFO L933 BasicCegarLoop]: 1923 mSDtfsCounter, 3864 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3864 SdHoareTripleChecker+Valid, 4099 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:50,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3864 Valid, 4099 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:50,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10434 states. [2022-01-10 23:59:51,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10434 to 8203. [2022-01-10 23:59:51,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8203 states, 8197 states have (on average 1.6559716969623033) internal successors, (13574), 8202 states have internal predecessors, (13574), 0 states have call successors, (0), 0 states 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 23:59:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8203 states to 8203 states and 13574 transitions. [2022-01-10 23:59:51,347 INFO L78 Accepts]: Start accepts. Automaton has 8203 states and 13574 transitions. Word has length 72 [2022-01-10 23:59:51,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:51,347 INFO L470 AbstractCegarLoop]: Abstraction has 8203 states and 13574 transitions. [2022-01-10 23:59:51,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 8203 states and 13574 transitions. [2022-01-10 23:59:51,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:59:51,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:51,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:51,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:59:51,352 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:51,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:51,353 INFO L85 PathProgramCache]: Analyzing trace with hash -17715685, now seen corresponding path program 1 times [2022-01-10 23:59:51,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:51,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588640716] [2022-01-10 23:59:51,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:51,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:51,450 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 23:59:51,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:51,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588640716] [2022-01-10 23:59:51,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588640716] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:51,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:51,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:51,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073556335] [2022-01-10 23:59:51,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:51,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:51,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:51,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:51,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:51,452 INFO L87 Difference]: Start difference. First operand 8203 states and 13574 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:54,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:54,609 INFO L93 Difference]: Finished difference Result 28852 states and 46201 transitions. [2022-01-10 23:59:54,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:59:54,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 23:59:54,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:54,637 INFO L225 Difference]: With dead ends: 28852 [2022-01-10 23:59:54,637 INFO L226 Difference]: Without dead ends: 23467 [2022-01-10 23:59:54,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:59:54,647 INFO L933 BasicCegarLoop]: 5651 mSDtfsCounter, 5295 mSDsluCounter, 10613 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5295 SdHoareTripleChecker+Valid, 16264 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:54,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5295 Valid, 16264 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 23:59:54,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23467 states. [2022-01-10 23:59:55,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23467 to 10351. [2022-01-10 23:59:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10351 states, 10345 states have (on average 1.6357660705654906) internal successors, (16922), 10350 states have internal predecessors, (16922), 0 states have call successors, (0), 0 states 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 23:59:55,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10351 states to 10351 states and 16922 transitions. [2022-01-10 23:59:55,851 INFO L78 Accepts]: Start accepts. Automaton has 10351 states and 16922 transitions. Word has length 72 [2022-01-10 23:59:55,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:55,851 INFO L470 AbstractCegarLoop]: Abstraction has 10351 states and 16922 transitions. [2022-01-10 23:59:55,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:55,852 INFO L276 IsEmpty]: Start isEmpty. Operand 10351 states and 16922 transitions. [2022-01-10 23:59:55,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 23:59:55,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:55,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:55,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:59:55,857 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:55,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:55,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1941279506, now seen corresponding path program 1 times [2022-01-10 23:59:55,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:55,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313871079] [2022-01-10 23:59:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:55,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:55,959 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 23:59:55,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:55,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313871079] [2022-01-10 23:59:55,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313871079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:55,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:55,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:55,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110684174] [2022-01-10 23:59:55,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:55,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:55,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:55,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:55,961 INFO L87 Difference]: Start difference. First operand 10351 states and 16922 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:00:01,744 INFO L93 Difference]: Finished difference Result 64531 states and 104940 transitions. [2022-01-11 00:00:01,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 00:00:01,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 00:00:01,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:00:01,851 INFO L225 Difference]: With dead ends: 64531 [2022-01-11 00:00:01,852 INFO L226 Difference]: Without dead ends: 57690 [2022-01-11 00:00:01,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 00:00:01,883 INFO L933 BasicCegarLoop]: 3368 mSDtfsCounter, 12188 mSDsluCounter, 9325 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12188 SdHoareTripleChecker+Valid, 12693 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:00:01,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12188 Valid, 12693 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:00:01,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57690 states. [2022-01-11 00:00:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57690 to 20686. [2022-01-11 00:00:04,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20686 states, 20680 states have (on average 1.6338491295938105) internal successors, (33788), 20685 states have internal predecessors, (33788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:04,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20686 states to 20686 states and 33788 transitions. [2022-01-11 00:00:04,732 INFO L78 Accepts]: Start accepts. Automaton has 20686 states and 33788 transitions. Word has length 73 [2022-01-11 00:00:04,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:04,732 INFO L470 AbstractCegarLoop]: Abstraction has 20686 states and 33788 transitions. [2022-01-11 00:00:04,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:04,732 INFO L276 IsEmpty]: Start isEmpty. Operand 20686 states and 33788 transitions. [2022-01-11 00:00:04,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 00:00:04,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:00:04,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:00:04,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:00:04,744 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 00:00:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:00:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash -444911926, now seen corresponding path program 1 times [2022-01-11 00:00:04,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:00:04,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856696542] [2022-01-11 00:00:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:00:04,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:00:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:00:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:00:04,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:00:04,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856696542] [2022-01-11 00:00:04,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856696542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:00:04,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:00:04,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 00:00:04,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400196150] [2022-01-11 00:00:04,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:00:04,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 00:00:04,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:00:04,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 00:00:04,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:00:04,909 INFO L87 Difference]: Start difference. First operand 20686 states and 33788 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:09,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:00:09,078 INFO L93 Difference]: Finished difference Result 44016 states and 70699 transitions. [2022-01-11 00:00:09,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 00:00:09,078 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 00:00:09,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:00:09,131 INFO L225 Difference]: With dead ends: 44016 [2022-01-11 00:00:09,131 INFO L226 Difference]: Without dead ends: 27200 [2022-01-11 00:00:09,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2022-01-11 00:00:09,150 INFO L933 BasicCegarLoop]: 1918 mSDtfsCounter, 9536 mSDsluCounter, 6776 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9536 SdHoareTripleChecker+Valid, 8694 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:00:09,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9536 Valid, 8694 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:00:09,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27200 states. [2022-01-11 00:00:11,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27200 to 20494. [2022-01-11 00:00:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20494 states, 20488 states have (on average 1.6261226083561109) internal successors, (33316), 20493 states have internal predecessors, (33316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20494 states to 20494 states and 33316 transitions. [2022-01-11 00:00:11,706 INFO L78 Accepts]: Start accepts. Automaton has 20494 states and 33316 transitions. Word has length 73 [2022-01-11 00:00:11,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:11,707 INFO L470 AbstractCegarLoop]: Abstraction has 20494 states and 33316 transitions. [2022-01-11 00:00:11,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:11,708 INFO L276 IsEmpty]: Start isEmpty. Operand 20494 states and 33316 transitions. [2022-01-11 00:00:11,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 00:00:11,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:00:11,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:00:11,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:00:11,718 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 00:00:11,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:00:11,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2057968405, now seen corresponding path program 1 times [2022-01-11 00:00:11,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:00:11,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067937044] [2022-01-11 00:00:11,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:00:11,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:00:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:00:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:00:11,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:00:11,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067937044] [2022-01-11 00:00:11,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067937044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:00:11,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:00:11,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 00:00:11,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725100055] [2022-01-11 00:00:11,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:00:11,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 00:00:11,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:00:11,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 00:00:11,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 00:00:11,861 INFO L87 Difference]: Start difference. First operand 20494 states and 33316 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:17,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:00:17,962 INFO L93 Difference]: Finished difference Result 51548 states and 82806 transitions. [2022-01-11 00:00:17,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-11 00:00:17,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-11 00:00:17,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:00:18,043 INFO L225 Difference]: With dead ends: 51548 [2022-01-11 00:00:18,044 INFO L226 Difference]: Without dead ends: 41892 [2022-01-11 00:00:18,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-01-11 00:00:18,070 INFO L933 BasicCegarLoop]: 4119 mSDtfsCounter, 14281 mSDsluCounter, 11453 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14281 SdHoareTripleChecker+Valid, 15572 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 00:00:18,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14281 Valid, 15572 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 00:00:18,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41892 states. [2022-01-11 00:00:20,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41892 to 20468. [2022-01-11 00:00:20,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20468 states, 20462 states have (on average 1.6256475417847718) internal successors, (33264), 20467 states have internal predecessors, (33264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20468 states to 20468 states and 33264 transitions. [2022-01-11 00:00:20,654 INFO L78 Accepts]: Start accepts. Automaton has 20468 states and 33264 transitions. Word has length 74 [2022-01-11 00:00:20,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:20,655 INFO L470 AbstractCegarLoop]: Abstraction has 20468 states and 33264 transitions. [2022-01-11 00:00:20,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 20468 states and 33264 transitions. [2022-01-11 00:00:20,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 00:00:20,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:00:20,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:00:20,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:00:20,666 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 00:00:20,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:00:20,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2040485386, now seen corresponding path program 1 times [2022-01-11 00:00:20,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:00:20,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54461696] [2022-01-11 00:00:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:00:20,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:00:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:00:20,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:00:20,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:00:20,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54461696] [2022-01-11 00:00:20,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54461696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:00:20,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:00:20,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:00:20,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361375910] [2022-01-11 00:00:20,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:00:20,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:00:20,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:00:20,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:00:20,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:00:20,784 INFO L87 Difference]: Start difference. First operand 20468 states and 33264 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)