/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_spec4_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:56:20,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:56:20,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:56:20,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:56:20,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:56:20,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:56:20,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:56:20,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:56:20,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:56:20,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:56:20,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:56:20,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:56:20,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:56:20,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:56:20,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:56:20,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:56:20,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:56:20,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:56:20,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:56:20,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:56:20,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:56:20,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:56:20,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:56:20,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:56:20,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:56:20,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:56:20,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:56:20,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:56:20,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:56:20,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:56:20,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:56:20,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:56:20,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:56:20,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:56:20,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:56:20,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:56:20,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:56:20,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:56:20,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:56:20,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:56:20,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:56:20,845 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 23:56:20,908 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:56:20,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:56:20,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:56:20,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:56:20,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:56:20,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:56:20,910 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:56:20,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:56:20,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:56:20,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:56:20,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:56:20,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:56:20,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:56:20,912 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:56:20,912 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:56:20,912 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:56:20,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:56:20,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:56:20,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:56:20,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:56:20,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:56:20,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:56:20,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:56:20,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:56:20,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:56:20,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:56:20,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:56:20,914 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:56:20,915 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:56:20,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:56:20,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:56:20,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:56:20,917 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:56:20,917 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:56:21,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:56:21,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:56:21,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:56:21,209 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:56:21,210 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:56:21,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product23.cil.c [2022-01-10 23:56:21,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0303b34a8/f2d5bb3dbf9d4ad39472ad75ab79c161/FLAG6eada0b9a [2022-01-10 23:56:21,833 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:56:21,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product23.cil.c [2022-01-10 23:56:21,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0303b34a8/f2d5bb3dbf9d4ad39472ad75ab79c161/FLAG6eada0b9a [2022-01-10 23:56:22,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0303b34a8/f2d5bb3dbf9d4ad39472ad75ab79c161 [2022-01-10 23:56:22,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:56:22,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:56:22,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:56:22,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:56:22,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:56:22,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:56:22" (1/1) ... [2022-01-10 23:56:22,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505d7aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:22, skipping insertion in model container [2022-01-10 23:56:22,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:56:22" (1/1) ... [2022-01-10 23:56:22,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:56:22,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:56:22,859 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_spec4_product23.cil.c[63051,63064] [2022-01-10 23:56:22,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:56:22,881 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:56:22,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:56:22,970 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_spec4_product23.cil.c[63051,63064] [2022-01-10 23:56:22,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:56:22,982 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:56:23,078 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_spec4_product23.cil.c[63051,63064] [2022-01-10 23:56:23,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:56:23,122 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:56:23,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:23 WrapperNode [2022-01-10 23:56:23,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:56:23,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:56:23,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:56:23,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:56:23,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:23" (1/1) ... [2022-01-10 23:56:23,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:23" (1/1) ... [2022-01-10 23:56:23,253 INFO L137 Inliner]: procedures = 132, calls = 218, calls flagged for inlining = 127, calls inlined = 256, statements flattened = 3841 [2022-01-10 23:56:23,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:56:23,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:56:23,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:56:23,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:56:23,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:23" (1/1) ... [2022-01-10 23:56:23,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:23" (1/1) ... [2022-01-10 23:56:23,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:23" (1/1) ... [2022-01-10 23:56:23,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:23" (1/1) ... [2022-01-10 23:56:23,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:23" (1/1) ... [2022-01-10 23:56:23,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:23" (1/1) ... [2022-01-10 23:56:23,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:23" (1/1) ... [2022-01-10 23:56:23,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:56:23,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:56:23,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:56:23,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:56:23,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:23" (1/1) ... [2022-01-10 23:56:23,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:56:23,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:56:23,441 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 23:56:23,465 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 23:56:23,474 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:56:23,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:56:23,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:56:23,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:56:23,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:56:23,736 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:56:23,748 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:56:25,567 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:56:25,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:56:25,589 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:56:25,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:56:25 BoogieIcfgContainer [2022-01-10 23:56:25,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:56:25,593 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:56:25,593 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:56:25,594 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:56:25,597 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:56:25" (1/1) ... [2022-01-10 23:56:26,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:56:26 BasicIcfg [2022-01-10 23:56:26,015 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:56:26,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:56:26,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:56:26,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:56:26,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:56:22" (1/4) ... [2022-01-10 23:56:26,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aeedf21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:56:26, skipping insertion in model container [2022-01-10 23:56:26,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:23" (2/4) ... [2022-01-10 23:56:26,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aeedf21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:56:26, skipping insertion in model container [2022-01-10 23:56:26,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:56:25" (3/4) ... [2022-01-10 23:56:26,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aeedf21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:56:26, skipping insertion in model container [2022-01-10 23:56:26,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:56:26" (4/4) ... [2022-01-10 23:56:26,022 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product23.cil.cTransformedIcfg [2022-01-10 23:56:26,026 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:56:26,027 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 23:56:26,069 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:56:26,075 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 23:56:26,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 23:56:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 876 states, 869 states have (on average 1.6939010356731876) internal successors, (1472), 875 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states 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 23:56:26,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 23:56:26,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:26,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:26,117 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 23:56:26,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:26,122 INFO L85 PathProgramCache]: Analyzing trace with hash 60102831, now seen corresponding path program 1 times [2022-01-10 23:56:26,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:26,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057934095] [2022-01-10 23:56:26,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:26,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:26,488 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 23:56:26,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:26,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057934095] [2022-01-10 23:56:26,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057934095] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:26,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:26,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:56:26,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524598637] [2022-01-10 23:56:26,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:26,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:56:26,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:26,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:56:26,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:56:26,522 INFO L87 Difference]: Start difference. First operand has 876 states, 869 states have (on average 1.6939010356731876) internal successors, (1472), 875 states have internal predecessors, (1472), 0 states have call successors, (0), 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 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:26,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:26,586 INFO L93 Difference]: Finished difference Result 1443 states and 2397 transitions. [2022-01-10 23:56:26,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:56:26,588 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-01-10 23:56:26,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:26,606 INFO L225 Difference]: With dead ends: 1443 [2022-01-10 23:56:26,607 INFO L226 Difference]: Without dead ends: 752 [2022-01-10 23:56:26,618 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 23:56:26,621 INFO L933 BasicCegarLoop]: 1458 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, 1458 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 23:56:26,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:56:26,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-01-10 23:56:26,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2022-01-10 23:56:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 746 states have (on average 1.7010723860589811) internal successors, (1269), 751 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states 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 23:56:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1269 transitions. [2022-01-10 23:56:26,704 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1269 transitions. Word has length 50 [2022-01-10 23:56:26,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:26,704 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 1269 transitions. [2022-01-10 23:56:26,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:26,705 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1269 transitions. [2022-01-10 23:56:26,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 23:56:26,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:26,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:26,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:56:26,709 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 23:56:26,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:26,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1458658051, now seen corresponding path program 1 times [2022-01-10 23:56:26,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:26,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293476954] [2022-01-10 23:56:26,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:26,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:26,961 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 23:56:26,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:26,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293476954] [2022-01-10 23:56:26,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293476954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:26,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:26,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:56:26,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714535240] [2022-01-10 23:56:26,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:26,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:56:26,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:26,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:56:26,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:56:26,965 INFO L87 Difference]: Start difference. First operand 752 states and 1269 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:27,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:27,107 INFO L93 Difference]: Finished difference Result 1485 states and 2510 transitions. [2022-01-10 23:56:27,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:56:27,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-10 23:56:27,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:27,119 INFO L225 Difference]: With dead ends: 1485 [2022-01-10 23:56:27,119 INFO L226 Difference]: Without dead ends: 752 [2022-01-10 23:56:27,122 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 23:56:27,123 INFO L933 BasicCegarLoop]: 1248 mSDtfsCounter, 1244 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 1261 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 23:56:27,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1244 Valid, 1261 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:27,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-01-10 23:56:27,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2022-01-10 23:56:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 746 states have (on average 1.698391420911528) internal successors, (1267), 751 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states 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 23:56:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1267 transitions. [2022-01-10 23:56:27,181 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1267 transitions. Word has length 51 [2022-01-10 23:56:27,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:27,182 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 1267 transitions. [2022-01-10 23:56:27,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:27,186 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1267 transitions. [2022-01-10 23:56:27,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 23:56:27,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:27,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:27,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:56:27,196 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 23:56:27,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:27,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1171355773, now seen corresponding path program 1 times [2022-01-10 23:56:27,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:27,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684803905] [2022-01-10 23:56:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:27,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:27,370 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 23:56:27,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:27,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684803905] [2022-01-10 23:56:27,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684803905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:27,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:27,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:56:27,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144028145] [2022-01-10 23:56:27,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:27,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:27,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:27,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:27,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:27,375 INFO L87 Difference]: Start difference. First operand 752 states and 1267 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:27,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:27,670 INFO L93 Difference]: Finished difference Result 3628 states and 6131 transitions. [2022-01-10 23:56:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:56:27,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 23:56:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:27,684 INFO L225 Difference]: With dead ends: 3628 [2022-01-10 23:56:27,684 INFO L226 Difference]: Without dead ends: 2900 [2022-01-10 23:56:27,687 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 23:56:27,688 INFO L933 BasicCegarLoop]: 2457 mSDtfsCounter, 6118 mSDsluCounter, 3673 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6118 SdHoareTripleChecker+Valid, 6130 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 23:56:27,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6118 Valid, 6130 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:27,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2022-01-10 23:56:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 752. [2022-01-10 23:56:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 746 states have (on average 1.6970509383378016) internal successors, (1266), 751 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 23:56:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1266 transitions. [2022-01-10 23:56:27,813 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1266 transitions. Word has length 53 [2022-01-10 23:56:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:27,813 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 1266 transitions. [2022-01-10 23:56:27,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1266 transitions. [2022-01-10 23:56:27,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 23:56:27,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:27,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:27,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:56:27,815 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 23:56:27,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:27,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1385641365, now seen corresponding path program 1 times [2022-01-10 23:56:27,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:27,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700635610] [2022-01-10 23:56:27,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:27,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:27,915 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 23:56:27,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:27,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700635610] [2022-01-10 23:56:27,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700635610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:27,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:27,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:56:27,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111576652] [2022-01-10 23:56:27,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:27,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:56:27,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:27,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:56:27,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:56:27,918 INFO L87 Difference]: Start difference. First operand 752 states and 1266 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:27,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:27,984 INFO L93 Difference]: Finished difference Result 1489 states and 2510 transitions. [2022-01-10 23:56:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:56:27,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-10 23:56:27,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:27,988 INFO L225 Difference]: With dead ends: 1489 [2022-01-10 23:56:27,988 INFO L226 Difference]: Without dead ends: 766 [2022-01-10 23:56:27,990 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 23:56:27,991 INFO L933 BasicCegarLoop]: 1280 mSDtfsCounter, 1245 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 1302 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 23:56:27,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1245 Valid, 1302 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:56:27,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-01-10 23:56:28,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 752. [2022-01-10 23:56:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 746 states have (on average 1.695710455764075) internal successors, (1265), 751 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states 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 23:56:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1265 transitions. [2022-01-10 23:56:28,035 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1265 transitions. Word has length 54 [2022-01-10 23:56:28,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:28,036 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 1265 transitions. [2022-01-10 23:56:28,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1265 transitions. [2022-01-10 23:56:28,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 23:56:28,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:28,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:28,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:56:28,038 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 23:56:28,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:28,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1835674658, now seen corresponding path program 1 times [2022-01-10 23:56:28,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:28,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907490327] [2022-01-10 23:56:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:28,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:28,135 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 23:56:28,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:28,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907490327] [2022-01-10 23:56:28,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907490327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:28,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:28,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:56:28,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750604309] [2022-01-10 23:56:28,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:28,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:28,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:28,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:28,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:28,137 INFO L87 Difference]: Start difference. First operand 752 states and 1265 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:28,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:28,386 INFO L93 Difference]: Finished difference Result 2190 states and 3695 transitions. [2022-01-10 23:56:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:56:28,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-10 23:56:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:28,393 INFO L225 Difference]: With dead ends: 2190 [2022-01-10 23:56:28,394 INFO L226 Difference]: Without dead ends: 1472 [2022-01-10 23:56:28,395 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 23:56:28,398 INFO L933 BasicCegarLoop]: 1274 mSDtfsCounter, 6041 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6041 SdHoareTripleChecker+Valid, 2562 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 23:56:28,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6041 Valid, 2562 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:28,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2022-01-10 23:56:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 752. [2022-01-10 23:56:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 746 states have (on average 1.693029490616622) internal successors, (1263), 751 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states 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 23:56:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1263 transitions. [2022-01-10 23:56:28,470 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1263 transitions. Word has length 55 [2022-01-10 23:56:28,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:28,470 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 1263 transitions. [2022-01-10 23:56:28,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1263 transitions. [2022-01-10 23:56:28,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 23:56:28,472 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:28,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:28,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:56:28,472 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 23:56:28,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:28,473 INFO L85 PathProgramCache]: Analyzing trace with hash -962126597, now seen corresponding path program 1 times [2022-01-10 23:56:28,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:28,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193756394] [2022-01-10 23:56:28,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:28,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:28,648 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 23:56:28,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:28,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193756394] [2022-01-10 23:56:28,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193756394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:28,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:28,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:56:28,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695489633] [2022-01-10 23:56:28,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:28,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:28,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:28,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:28,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:28,651 INFO L87 Difference]: Start difference. First operand 752 states and 1263 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:29,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:29,186 INFO L93 Difference]: Finished difference Result 3456 states and 5673 transitions. [2022-01-10 23:56:29,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:56:29,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 23:56:29,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:29,200 INFO L225 Difference]: With dead ends: 3456 [2022-01-10 23:56:29,201 INFO L226 Difference]: Without dead ends: 3066 [2022-01-10 23:56:29,205 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 23:56:29,208 INFO L933 BasicCegarLoop]: 1251 mSDtfsCounter, 6065 mSDsluCounter, 3888 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6065 SdHoareTripleChecker+Valid, 5139 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:29,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6065 Valid, 5139 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:56:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2022-01-10 23:56:29,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 1174. [2022-01-10 23:56:29,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1168 states have (on average 1.6703767123287672) internal successors, (1951), 1173 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states 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 23:56:29,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1951 transitions. [2022-01-10 23:56:29,325 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1951 transitions. Word has length 57 [2022-01-10 23:56:29,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:29,327 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 1951 transitions. [2022-01-10 23:56:29,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:29,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1951 transitions. [2022-01-10 23:56:29,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 23:56:29,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:29,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:29,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:56:29,329 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 23:56:29,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:29,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1544744570, now seen corresponding path program 1 times [2022-01-10 23:56:29,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:29,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008353074] [2022-01-10 23:56:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:29,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:29,493 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 23:56:29,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:29,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008353074] [2022-01-10 23:56:29,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008353074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:29,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:29,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:56:29,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998703188] [2022-01-10 23:56:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:29,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:56:29,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:29,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:56:29,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:56:29,495 INFO L87 Difference]: Start difference. First operand 1174 states and 1951 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:29,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:29,916 INFO L93 Difference]: Finished difference Result 2530 states and 4148 transitions. [2022-01-10 23:56:29,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:56:29,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 23:56:29,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:29,924 INFO L225 Difference]: With dead ends: 2530 [2022-01-10 23:56:29,924 INFO L226 Difference]: Without dead ends: 1778 [2022-01-10 23:56:29,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-01-10 23:56:29,929 INFO L933 BasicCegarLoop]: 1265 mSDtfsCounter, 5234 mSDsluCounter, 4700 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5234 SdHoareTripleChecker+Valid, 5965 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:29,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5234 Valid, 5965 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:29,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2022-01-10 23:56:30,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1153. [2022-01-10 23:56:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1147 states have (on average 1.6643417611159546) internal successors, (1909), 1152 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states 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 23:56:30,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1909 transitions. [2022-01-10 23:56:30,046 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1909 transitions. Word has length 58 [2022-01-10 23:56:30,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:30,046 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1909 transitions. [2022-01-10 23:56:30,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:30,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1909 transitions. [2022-01-10 23:56:30,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 23:56:30,048 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:30,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:30,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:56:30,048 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 23:56:30,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:30,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1246908808, now seen corresponding path program 1 times [2022-01-10 23:56:30,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:30,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700612209] [2022-01-10 23:56:30,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:30,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:30,218 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 23:56:30,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:30,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700612209] [2022-01-10 23:56:30,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700612209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:30,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:30,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:56:30,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052597219] [2022-01-10 23:56:30,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:30,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:56:30,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:30,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:56:30,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:56:30,220 INFO L87 Difference]: Start difference. First operand 1153 states and 1909 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:31,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:31,833 INFO L93 Difference]: Finished difference Result 8154 states and 13322 transitions. [2022-01-10 23:56:31,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 23:56:31,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 23:56:31,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:31,864 INFO L225 Difference]: With dead ends: 8154 [2022-01-10 23:56:31,864 INFO L226 Difference]: Without dead ends: 7852 [2022-01-10 23:56:31,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-01-10 23:56:31,867 INFO L933 BasicCegarLoop]: 2951 mSDtfsCounter, 8292 mSDsluCounter, 12619 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8292 SdHoareTripleChecker+Valid, 15570 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:31,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8292 Valid, 15570 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 23:56:31,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7852 states. [2022-01-10 23:56:32,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7852 to 1990. [2022-01-10 23:56:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1984 states have (on average 1.6471774193548387) internal successors, (3268), 1989 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states 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 23:56:32,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 3268 transitions. [2022-01-10 23:56:32,117 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 3268 transitions. Word has length 61 [2022-01-10 23:56:32,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:32,119 INFO L470 AbstractCegarLoop]: Abstraction has 1990 states and 3268 transitions. [2022-01-10 23:56:32,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:32,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 3268 transitions. [2022-01-10 23:56:32,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:56:32,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:32,120 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 23:56:32,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:56:32,121 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 23:56:32,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:32,121 INFO L85 PathProgramCache]: Analyzing trace with hash 393381, now seen corresponding path program 1 times [2022-01-10 23:56:32,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:32,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595860137] [2022-01-10 23:56:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:32,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:32,272 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 23:56:32,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:32,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595860137] [2022-01-10 23:56:32,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595860137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:32,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:32,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:56:32,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199602846] [2022-01-10 23:56:32,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:32,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:56:32,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:32,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:56:32,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:56:32,274 INFO L87 Difference]: Start difference. First operand 1990 states and 3268 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 23:56:33,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:33,331 INFO L93 Difference]: Finished difference Result 6883 states and 11138 transitions. [2022-01-10 23:56:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:56:33,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 23:56:33,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:33,359 INFO L225 Difference]: With dead ends: 6883 [2022-01-10 23:56:33,360 INFO L226 Difference]: Without dead ends: 5973 [2022-01-10 23:56:33,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:56:33,363 INFO L933 BasicCegarLoop]: 1186 mSDtfsCounter, 6184 mSDsluCounter, 4199 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6184 SdHoareTripleChecker+Valid, 5385 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:33,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6184 Valid, 5385 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:56:33,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5973 states. [2022-01-10 23:56:33,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5973 to 2154. [2022-01-10 23:56:33,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 2148 states have (on average 1.633147113594041) internal successors, (3508), 2153 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states 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 23:56:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 3508 transitions. [2022-01-10 23:56:33,602 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 3508 transitions. Word has length 62 [2022-01-10 23:56:33,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:33,602 INFO L470 AbstractCegarLoop]: Abstraction has 2154 states and 3508 transitions. [2022-01-10 23:56:33,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 23:56:33,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 3508 transitions. [2022-01-10 23:56:33,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:56:33,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:33,604 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 23:56:33,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:56:33,605 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 23:56:33,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:33,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1939099887, now seen corresponding path program 1 times [2022-01-10 23:56:33,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:33,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812105396] [2022-01-10 23:56:33,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:33,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:56:33,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:33,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812105396] [2022-01-10 23:56:33,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812105396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:33,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:33,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:56:33,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646873009] [2022-01-10 23:56:33,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:33,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:33,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:33,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:33,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:33,702 INFO L87 Difference]: Start difference. First operand 2154 states and 3508 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:34,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:34,177 INFO L93 Difference]: Finished difference Result 4471 states and 7235 transitions. [2022-01-10 23:56:34,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:56:34,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 23:56:34,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:34,185 INFO L225 Difference]: With dead ends: 4471 [2022-01-10 23:56:34,185 INFO L226 Difference]: Without dead ends: 3208 [2022-01-10 23:56:34,187 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 23:56:34,188 INFO L933 BasicCegarLoop]: 1246 mSDtfsCounter, 3738 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3738 SdHoareTripleChecker+Valid, 2866 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 23:56:34,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3738 Valid, 2866 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2022-01-10 23:56:34,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 2154. [2022-01-10 23:56:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 2148 states have (on average 1.632216014897579) internal successors, (3506), 2153 states have internal predecessors, (3506), 0 states have call successors, (0), 0 states 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 23:56:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 3506 transitions. [2022-01-10 23:56:34,417 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 3506 transitions. Word has length 62 [2022-01-10 23:56:34,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:34,418 INFO L470 AbstractCegarLoop]: Abstraction has 2154 states and 3506 transitions. [2022-01-10 23:56:34,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 3506 transitions. [2022-01-10 23:56:34,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:56:34,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:34,420 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 23:56:34,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:56:34,420 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 23:56:34,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:34,421 INFO L85 PathProgramCache]: Analyzing trace with hash 14133702, now seen corresponding path program 1 times [2022-01-10 23:56:34,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:34,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531983765] [2022-01-10 23:56:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:34,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:34,575 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 23:56:34,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:34,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531983765] [2022-01-10 23:56:34,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531983765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:34,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:34,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:56:34,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290036536] [2022-01-10 23:56:34,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:34,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:56:34,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:34,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:56:34,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:56:34,577 INFO L87 Difference]: Start difference. First operand 2154 states and 3506 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 23:56:35,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:35,829 INFO L93 Difference]: Finished difference Result 6953 states and 11217 transitions. [2022-01-10 23:56:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:56:35,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 23:56:35,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:35,842 INFO L225 Difference]: With dead ends: 6953 [2022-01-10 23:56:35,843 INFO L226 Difference]: Without dead ends: 5853 [2022-01-10 23:56:35,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:56:35,846 INFO L933 BasicCegarLoop]: 1208 mSDtfsCounter, 6107 mSDsluCounter, 4193 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6107 SdHoareTripleChecker+Valid, 5401 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:35,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6107 Valid, 5401 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:56:35,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5853 states. [2022-01-10 23:56:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5853 to 2102. [2022-01-10 23:56:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 2096 states have (on average 1.6354961832061068) internal successors, (3428), 2101 states have internal predecessors, (3428), 0 states have call successors, (0), 0 states 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 23:56:36,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 3428 transitions. [2022-01-10 23:56:36,126 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 3428 transitions. Word has length 63 [2022-01-10 23:56:36,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:36,126 INFO L470 AbstractCegarLoop]: Abstraction has 2102 states and 3428 transitions. [2022-01-10 23:56:36,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 23:56:36,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 3428 transitions. [2022-01-10 23:56:36,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:56:36,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:36,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:36,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:56:36,129 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 23:56:36,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash 904980545, now seen corresponding path program 1 times [2022-01-10 23:56:36,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:36,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509925588] [2022-01-10 23:56:36,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:36,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:36,221 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 23:56:36,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:36,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509925588] [2022-01-10 23:56:36,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509925588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:36,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:36,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:56:36,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200507926] [2022-01-10 23:56:36,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:36,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:36,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:36,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:36,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:36,223 INFO L87 Difference]: Start difference. First operand 2102 states and 3428 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:37,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:37,032 INFO L93 Difference]: Finished difference Result 6832 states and 11009 transitions. [2022-01-10 23:56:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:56:37,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 23:56:37,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:37,043 INFO L225 Difference]: With dead ends: 6832 [2022-01-10 23:56:37,044 INFO L226 Difference]: Without dead ends: 5228 [2022-01-10 23:56:37,047 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 23:56:37,048 INFO L933 BasicCegarLoop]: 1208 mSDtfsCounter, 3875 mSDsluCounter, 2995 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3875 SdHoareTripleChecker+Valid, 4203 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:37,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3875 Valid, 4203 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:37,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5228 states. [2022-01-10 23:56:37,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5228 to 3082. [2022-01-10 23:56:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 3076 states have (on average 1.6339401820546164) internal successors, (5026), 3081 states have internal predecessors, (5026), 0 states have call successors, (0), 0 states 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 23:56:37,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 5026 transitions. [2022-01-10 23:56:37,463 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 5026 transitions. Word has length 63 [2022-01-10 23:56:37,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:37,464 INFO L470 AbstractCegarLoop]: Abstraction has 3082 states and 5026 transitions. [2022-01-10 23:56:37,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:37,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 5026 transitions. [2022-01-10 23:56:37,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:56:37,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:37,466 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 23:56:37,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:56:37,466 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 23:56:37,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:37,467 INFO L85 PathProgramCache]: Analyzing trace with hash 267425556, now seen corresponding path program 1 times [2022-01-10 23:56:37,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:37,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789404794] [2022-01-10 23:56:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:37,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:37,549 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 23:56:37,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:37,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789404794] [2022-01-10 23:56:37,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789404794] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:37,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:37,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:56:37,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868702653] [2022-01-10 23:56:37,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:37,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:56:37,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:37,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:56:37,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:56:37,551 INFO L87 Difference]: Start difference. First operand 3082 states and 5026 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:38,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:38,246 INFO L93 Difference]: Finished difference Result 7586 states and 12309 transitions. [2022-01-10 23:56:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:56:38,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 23:56:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:38,258 INFO L225 Difference]: With dead ends: 7586 [2022-01-10 23:56:38,258 INFO L226 Difference]: Without dead ends: 5628 [2022-01-10 23:56:38,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:38,263 INFO L933 BasicCegarLoop]: 1890 mSDtfsCounter, 1740 mSDsluCounter, 2927 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 4817 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:38,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1740 Valid, 4817 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:38,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2022-01-10 23:56:38,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 2652. [2022-01-10 23:56:38,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2646 states have (on average 1.6345427059712774) internal successors, (4325), 2651 states have internal predecessors, (4325), 0 states have call successors, (0), 0 states 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 23:56:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 4325 transitions. [2022-01-10 23:56:38,619 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 4325 transitions. Word has length 63 [2022-01-10 23:56:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:38,619 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 4325 transitions. [2022-01-10 23:56:38,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 4325 transitions. [2022-01-10 23:56:38,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 23:56:38,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:38,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:38,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:56:38,622 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 23:56:38,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:38,622 INFO L85 PathProgramCache]: Analyzing trace with hash -249246979, now seen corresponding path program 1 times [2022-01-10 23:56:38,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:38,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728496130] [2022-01-10 23:56:38,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:38,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:38,725 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 23:56:38,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:38,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728496130] [2022-01-10 23:56:38,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728496130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:38,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:38,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 23:56:38,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074080991] [2022-01-10 23:56:38,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:38,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:56:38,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:38,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:56:38,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:56:38,727 INFO L87 Difference]: Start difference. First operand 2652 states and 4325 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:39,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:39,763 INFO L93 Difference]: Finished difference Result 6396 states and 10288 transitions. [2022-01-10 23:56:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 23:56:39,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 23:56:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:39,772 INFO L225 Difference]: With dead ends: 6396 [2022-01-10 23:56:39,773 INFO L226 Difference]: Without dead ends: 5602 [2022-01-10 23:56:39,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2022-01-10 23:56:39,775 INFO L933 BasicCegarLoop]: 1204 mSDtfsCounter, 8103 mSDsluCounter, 5398 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8103 SdHoareTripleChecker+Valid, 6602 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:39,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8103 Valid, 6602 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:56:39,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5602 states. [2022-01-10 23:56:40,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5602 to 2732. [2022-01-10 23:56:40,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2726 states have (on average 1.623991195891416) internal successors, (4427), 2731 states have internal predecessors, (4427), 0 states have call successors, (0), 0 states 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 23:56:40,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 4427 transitions. [2022-01-10 23:56:40,135 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 4427 transitions. Word has length 64 [2022-01-10 23:56:40,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:40,135 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 4427 transitions. [2022-01-10 23:56:40,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:40,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 4427 transitions. [2022-01-10 23:56:40,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 23:56:40,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:40,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:40,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:56:40,138 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)] === [2022-01-10 23:56:40,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:40,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1547333112, now seen corresponding path program 1 times [2022-01-10 23:56:40,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:40,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331196662] [2022-01-10 23:56:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:40,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:40,224 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 23:56:40,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:40,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331196662] [2022-01-10 23:56:40,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331196662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:40,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:40,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:56:40,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285116705] [2022-01-10 23:56:40,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:40,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:40,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:40,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:40,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:40,226 INFO L87 Difference]: Start difference. First operand 2732 states and 4427 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:41,149 INFO L93 Difference]: Finished difference Result 7718 states and 12393 transitions. [2022-01-10 23:56:41,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:56:41,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 23:56:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:41,159 INFO L225 Difference]: With dead ends: 7718 [2022-01-10 23:56:41,159 INFO L226 Difference]: Without dead ends: 5693 [2022-01-10 23:56:41,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:56:41,164 INFO L933 BasicCegarLoop]: 1244 mSDtfsCounter, 4849 mSDsluCounter, 3557 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4849 SdHoareTripleChecker+Valid, 4801 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:41,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4849 Valid, 4801 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:41,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2022-01-10 23:56:41,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 2760. [2022-01-10 23:56:41,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2760 states, 2754 states have (on average 1.6205519244734932) internal successors, (4463), 2759 states have internal predecessors, (4463), 0 states have call successors, (0), 0 states 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 23:56:41,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 4463 transitions. [2022-01-10 23:56:41,511 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 4463 transitions. Word has length 64 [2022-01-10 23:56:41,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:41,511 INFO L470 AbstractCegarLoop]: Abstraction has 2760 states and 4463 transitions. [2022-01-10 23:56:41,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:41,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 4463 transitions. [2022-01-10 23:56:41,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:56:41,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:41,514 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 23:56:41,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:56:41,514 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)] === [2022-01-10 23:56:41,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:41,514 INFO L85 PathProgramCache]: Analyzing trace with hash 865217134, now seen corresponding path program 1 times [2022-01-10 23:56:41,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:41,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828792676] [2022-01-10 23:56:41,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:41,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:56:41,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:41,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828792676] [2022-01-10 23:56:41,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828792676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:41,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:41,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:56:41,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111937608] [2022-01-10 23:56:41,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:41,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:41,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:41,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:41,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:41,616 INFO L87 Difference]: Start difference. First operand 2760 states and 4463 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 23:56:42,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:42,315 INFO L93 Difference]: Finished difference Result 6256 states and 10025 transitions. [2022-01-10 23:56:42,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:56:42,315 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 23:56:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:42,322 INFO L225 Difference]: With dead ends: 6256 [2022-01-10 23:56:42,322 INFO L226 Difference]: Without dead ends: 4033 [2022-01-10 23:56:42,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 23:56:42,327 INFO L933 BasicCegarLoop]: 1226 mSDtfsCounter, 3710 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3710 SdHoareTripleChecker+Valid, 4213 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:42,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3710 Valid, 4213 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4033 states. [2022-01-10 23:56:42,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4033 to 2360. [2022-01-10 23:56:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 2354 states have (on average 1.6312659303313508) internal successors, (3840), 2359 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states 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 23:56:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 3840 transitions. [2022-01-10 23:56:42,640 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 3840 transitions. Word has length 65 [2022-01-10 23:56:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:42,640 INFO L470 AbstractCegarLoop]: Abstraction has 2360 states and 3840 transitions. [2022-01-10 23:56:42,641 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 23:56:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 3840 transitions. [2022-01-10 23:56:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:56:42,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:42,642 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 23:56:42,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:56:42,643 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)] === [2022-01-10 23:56:42,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:42,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1604198723, now seen corresponding path program 1 times [2022-01-10 23:56:42,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:42,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071418440] [2022-01-10 23:56:42,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:42,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:42,756 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 23:56:42,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:42,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071418440] [2022-01-10 23:56:42,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071418440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:42,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:42,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:56:42,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018180828] [2022-01-10 23:56:42,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:42,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:56:42,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:42,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:56:42,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:56:42,758 INFO L87 Difference]: Start difference. First operand 2360 states and 3840 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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 23:56:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:43,818 INFO L93 Difference]: Finished difference Result 6906 states and 11165 transitions. [2022-01-10 23:56:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:56:43,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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 23:56:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:43,825 INFO L225 Difference]: With dead ends: 6906 [2022-01-10 23:56:43,825 INFO L226 Difference]: Without dead ends: 5307 [2022-01-10 23:56:43,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:56:43,828 INFO L933 BasicCegarLoop]: 1225 mSDtfsCounter, 5993 mSDsluCounter, 4706 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5993 SdHoareTripleChecker+Valid, 5931 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:43,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5993 Valid, 5931 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:56:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5307 states. [2022-01-10 23:56:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5307 to 2852. [2022-01-10 23:56:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2846 states have (on average 1.6264933239634576) internal successors, (4629), 2851 states have internal predecessors, (4629), 0 states have call successors, (0), 0 states 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 23:56:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 4629 transitions. [2022-01-10 23:56:44,127 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 4629 transitions. Word has length 65 [2022-01-10 23:56:44,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:44,127 INFO L470 AbstractCegarLoop]: Abstraction has 2852 states and 4629 transitions. [2022-01-10 23:56:44,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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 23:56:44,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 4629 transitions. [2022-01-10 23:56:44,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 23:56:44,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:44,129 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] [2022-01-10 23:56:44,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:56:44,130 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:56:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:44,130 INFO L85 PathProgramCache]: Analyzing trace with hash -48319941, now seen corresponding path program 1 times [2022-01-10 23:56:44,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:44,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654470402] [2022-01-10 23:56:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:44,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:44,234 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 23:56:44,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:44,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654470402] [2022-01-10 23:56:44,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654470402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:44,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:44,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:56:44,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366258956] [2022-01-10 23:56:44,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:44,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:56:44,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:44,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:56:44,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:56:44,236 INFO L87 Difference]: Start difference. First operand 2852 states and 4629 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 23:56:45,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:45,095 INFO L93 Difference]: Finished difference Result 5638 states and 9067 transitions. [2022-01-10 23:56:45,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 23:56:45,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 23:56:45,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:45,103 INFO L225 Difference]: With dead ends: 5638 [2022-01-10 23:56:45,103 INFO L226 Difference]: Without dead ends: 4920 [2022-01-10 23:56:45,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-01-10 23:56:45,105 INFO L933 BasicCegarLoop]: 1203 mSDtfsCounter, 7260 mSDsluCounter, 7647 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7260 SdHoareTripleChecker+Valid, 8850 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:45,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7260 Valid, 8850 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:56:45,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2022-01-10 23:56:45,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 2902. [2022-01-10 23:56:45,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2896 states have (on average 1.6170580110497237) internal successors, (4683), 2901 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 23:56:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 4683 transitions. [2022-01-10 23:56:45,440 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 4683 transitions. Word has length 66 [2022-01-10 23:56:45,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:45,440 INFO L470 AbstractCegarLoop]: Abstraction has 2902 states and 4683 transitions. [2022-01-10 23:56:45,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 23:56:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 4683 transitions. [2022-01-10 23:56:45,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:56:45,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:45,441 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 23:56:45,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:56:45,442 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:56:45,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:45,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1495979280, now seen corresponding path program 1 times [2022-01-10 23:56:45,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:45,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168727422] [2022-01-10 23:56:45,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:45,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:45,540 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 23:56:45,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:45,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168727422] [2022-01-10 23:56:45,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168727422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:45,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:45,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:56:45,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925635784] [2022-01-10 23:56:45,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:45,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:45,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:45,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:45,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:45,542 INFO L87 Difference]: Start difference. First operand 2902 states and 4683 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 23:56:46,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:46,023 INFO L93 Difference]: Finished difference Result 5289 states and 8469 transitions. [2022-01-10 23:56:46,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:56:46,023 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 23:56:46,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:46,027 INFO L225 Difference]: With dead ends: 5289 [2022-01-10 23:56:46,027 INFO L226 Difference]: Without dead ends: 3120 [2022-01-10 23:56:46,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 23:56:46,031 INFO L933 BasicCegarLoop]: 1221 mSDtfsCounter, 3818 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3818 SdHoareTripleChecker+Valid, 4305 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:46,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3818 Valid, 4305 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:46,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2022-01-10 23:56:46,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2061. [2022-01-10 23:56:46,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 2058 states have (on average 1.628765792031098) internal successors, (3352), 2060 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states 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 23:56:46,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 3352 transitions. [2022-01-10 23:56:46,312 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 3352 transitions. Word has length 67 [2022-01-10 23:56:46,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:46,312 INFO L470 AbstractCegarLoop]: Abstraction has 2061 states and 3352 transitions. [2022-01-10 23:56:46,312 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 23:56:46,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 3352 transitions. [2022-01-10 23:56:46,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 23:56:46,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:46,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:46,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:56:46,315 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:56:46,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:46,316 INFO L85 PathProgramCache]: Analyzing trace with hash -944104557, now seen corresponding path program 1 times [2022-01-10 23:56:46,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:46,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55939940] [2022-01-10 23:56:46,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:46,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:46,408 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 23:56:46,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:46,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55939940] [2022-01-10 23:56:46,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55939940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:46,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:46,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:56:46,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363608517] [2022-01-10 23:56:46,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:46,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:56:46,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:56:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:56:46,410 INFO L87 Difference]: Start difference. First operand 2061 states and 3352 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 23:56:47,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:47,774 INFO L93 Difference]: Finished difference Result 9908 states and 16128 transitions. [2022-01-10 23:56:47,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:56:47,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-10 23:56:47,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:47,790 INFO L225 Difference]: With dead ends: 9908 [2022-01-10 23:56:47,791 INFO L226 Difference]: Without dead ends: 9096 [2022-01-10 23:56:47,794 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 [2022-01-10 23:56:47,795 INFO L933 BasicCegarLoop]: 2363 mSDtfsCounter, 6004 mSDsluCounter, 7828 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6004 SdHoareTripleChecker+Valid, 10191 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:47,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6004 Valid, 10191 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:56:47,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9096 states. [2022-01-10 23:56:48,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9096 to 2717. [2022-01-10 23:56:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2714 states have (on average 1.6411201179071482) internal successors, (4454), 2716 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states 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 23:56:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 4454 transitions. [2022-01-10 23:56:48,178 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 4454 transitions. Word has length 94 [2022-01-10 23:56:48,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:48,178 INFO L470 AbstractCegarLoop]: Abstraction has 2717 states and 4454 transitions. [2022-01-10 23:56:48,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 23:56:48,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 4454 transitions. [2022-01-10 23:56:48,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 23:56:48,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:48,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:48,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:56:48,182 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:56:48,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:48,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1887503937, now seen corresponding path program 1 times [2022-01-10 23:56:48,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:48,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701892030] [2022-01-10 23:56:48,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:48,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:48,260 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 23:56:48,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:48,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701892030] [2022-01-10 23:56:48,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701892030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:48,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:48,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:56:48,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460253976] [2022-01-10 23:56:48,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:48,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:48,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:48,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:48,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:48,262 INFO L87 Difference]: Start difference. First operand 2717 states and 4454 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 23:56:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:48,985 INFO L93 Difference]: Finished difference Result 8028 states and 13191 transitions. [2022-01-10 23:56:48,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:56:48,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-01-10 23:56:48,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:48,992 INFO L225 Difference]: With dead ends: 8028 [2022-01-10 23:56:48,992 INFO L226 Difference]: Without dead ends: 5348 [2022-01-10 23:56:48,995 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 23:56:48,997 INFO L933 BasicCegarLoop]: 2373 mSDtfsCounter, 3642 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3642 SdHoareTripleChecker+Valid, 3561 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 23:56:48,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3642 Valid, 3561 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:49,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2022-01-10 23:56:49,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 2717. [2022-01-10 23:56:49,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2714 states have (on average 1.6403831982313928) internal successors, (4452), 2716 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states 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 23:56:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 4452 transitions. [2022-01-10 23:56:49,397 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 4452 transitions. Word has length 95 [2022-01-10 23:56:49,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:49,397 INFO L470 AbstractCegarLoop]: Abstraction has 2717 states and 4452 transitions. [2022-01-10 23:56:49,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 23:56:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 4452 transitions. [2022-01-10 23:56:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 23:56:49,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:49,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:49,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 23:56:49,402 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:56:49,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:49,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1610115305, now seen corresponding path program 1 times [2022-01-10 23:56:49,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:49,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574314338] [2022-01-10 23:56:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:49,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:49,506 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 23:56:49,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:49,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574314338] [2022-01-10 23:56:49,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574314338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:49,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:49,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:56:49,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745883531] [2022-01-10 23:56:49,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:49,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:56:49,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:49,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:56:49,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:56:49,508 INFO L87 Difference]: Start difference. First operand 2717 states and 4452 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 23:56:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:50,028 INFO L93 Difference]: Finished difference Result 4196 states and 6797 transitions. [2022-01-10 23:56:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:56:50,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-01-10 23:56:50,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:50,033 INFO L225 Difference]: With dead ends: 4196 [2022-01-10 23:56:50,033 INFO L226 Difference]: Without dead ends: 2717 [2022-01-10 23:56:50,036 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 23:56:50,037 INFO L933 BasicCegarLoop]: 1221 mSDtfsCounter, 1132 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:50,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 2535 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:56:50,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2022-01-10 23:56:50,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2717. [2022-01-10 23:56:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2714 states have (on average 1.6330140014738395) internal successors, (4432), 2716 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states 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 23:56:50,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 4432 transitions. [2022-01-10 23:56:50,365 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 4432 transitions. Word has length 96 [2022-01-10 23:56:50,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:50,365 INFO L470 AbstractCegarLoop]: Abstraction has 2717 states and 4432 transitions. [2022-01-10 23:56:50,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 23:56:50,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 4432 transitions. [2022-01-10 23:56:50,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 23:56:50,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:50,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:50,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 23:56:50,369 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:56:50,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:50,370 INFO L85 PathProgramCache]: Analyzing trace with hash 412046546, now seen corresponding path program 1 times [2022-01-10 23:56:50,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:50,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133338913] [2022-01-10 23:56:50,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:50,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:50,524 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 23:56:50,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:50,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133338913] [2022-01-10 23:56:50,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133338913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:50,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:50,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:56:50,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125578425] [2022-01-10 23:56:50,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:50,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:56:50,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:50,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:56:50,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:56:50,526 INFO L87 Difference]: Start difference. First operand 2717 states and 4432 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:53,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:53,369 INFO L93 Difference]: Finished difference Result 16195 states and 25848 transitions. [2022-01-10 23:56:53,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-10 23:56:53,369 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 23:56:53,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:53,387 INFO L225 Difference]: With dead ends: 16195 [2022-01-10 23:56:53,388 INFO L226 Difference]: Without dead ends: 14776 [2022-01-10 23:56:53,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=369, Invalid=963, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 23:56:53,392 INFO L933 BasicCegarLoop]: 1940 mSDtfsCounter, 9674 mSDsluCounter, 12533 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9674 SdHoareTripleChecker+Valid, 14473 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:53,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9674 Valid, 14473 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:56:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14776 states. [2022-01-10 23:56:54,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14776 to 5010. [2022-01-10 23:56:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5010 states, 5007 states have (on average 1.6175354503694828) internal successors, (8099), 5009 states have internal predecessors, (8099), 0 states have call successors, (0), 0 states 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 23:56:54,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 8099 transitions. [2022-01-10 23:56:54,192 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 8099 transitions. Word has length 99 [2022-01-10 23:56:54,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:54,192 INFO L470 AbstractCegarLoop]: Abstraction has 5010 states and 8099 transitions. [2022-01-10 23:56:54,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:54,192 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 8099 transitions. [2022-01-10 23:56:54,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 23:56:54,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:54,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:54,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 23:56:54,197 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:56:54,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:54,197 INFO L85 PathProgramCache]: Analyzing trace with hash -212440559, now seen corresponding path program 1 times [2022-01-10 23:56:54,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:54,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756736027] [2022-01-10 23:56:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:54,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:54,301 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 23:56:54,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:54,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756736027] [2022-01-10 23:56:54,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756736027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:54,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:54,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:56:54,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274147019] [2022-01-10 23:56:54,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:54,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:54,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:54,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:54,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:54,304 INFO L87 Difference]: Start difference. First operand 5010 states and 8099 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:55,342 INFO L93 Difference]: Finished difference Result 7452 states and 11990 transitions. [2022-01-10 23:56:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:56:55,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-01-10 23:56:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:55,349 INFO L225 Difference]: With dead ends: 7452 [2022-01-10 23:56:55,349 INFO L226 Difference]: Without dead ends: 5880 [2022-01-10 23:56:55,352 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 23:56:55,352 INFO L933 BasicCegarLoop]: 1227 mSDtfsCounter, 879 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 4096 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:55,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 4096 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:56:55,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2022-01-10 23:56:56,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5832. [2022-01-10 23:56:56,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 5829 states have (on average 1.6165723108594956) internal successors, (9423), 5831 states have internal predecessors, (9423), 0 states have call successors, (0), 0 states 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 23:56:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 9423 transitions. [2022-01-10 23:56:56,221 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 9423 transitions. Word has length 100 [2022-01-10 23:56:56,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:56,221 INFO L470 AbstractCegarLoop]: Abstraction has 5832 states and 9423 transitions. [2022-01-10 23:56:56,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:56,221 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 9423 transitions. [2022-01-10 23:56:56,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 23:56:56,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:56,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:56,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 23:56:56,227 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:56:56,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:56,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1383962289, now seen corresponding path program 1 times [2022-01-10 23:56:56,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:56,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204710424] [2022-01-10 23:56:56,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:56,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:56,351 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 23:56:56,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:56,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204710424] [2022-01-10 23:56:56,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204710424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:56,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:56,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:56:56,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023241312] [2022-01-10 23:56:56,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:56,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:56,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:56,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:56,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:56,353 INFO L87 Difference]: Start difference. First operand 5832 states and 9423 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 23:56:59,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:59,048 INFO L93 Difference]: Finished difference Result 19404 states and 31164 transitions. [2022-01-10 23:56:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:56:59,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 23:56:59,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:59,071 INFO L225 Difference]: With dead ends: 19404 [2022-01-10 23:56:59,071 INFO L226 Difference]: Without dead ends: 16754 [2022-01-10 23:56:59,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:56:59,080 INFO L933 BasicCegarLoop]: 1780 mSDtfsCounter, 2443 mSDsluCounter, 3967 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2443 SdHoareTripleChecker+Valid, 5747 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:59,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2443 Valid, 5747 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:59,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16754 states. [2022-01-10 23:57:00,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16754 to 11344. [2022-01-10 23:57:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11344 states, 11341 states have (on average 1.6154660082885106) internal successors, (18321), 11343 states have internal predecessors, (18321), 0 states have call successors, (0), 0 states 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 23:57:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11344 states to 11344 states and 18321 transitions. [2022-01-10 23:57:00,906 INFO L78 Accepts]: Start accepts. Automaton has 11344 states and 18321 transitions. Word has length 106 [2022-01-10 23:57:00,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:57:00,906 INFO L470 AbstractCegarLoop]: Abstraction has 11344 states and 18321 transitions. [2022-01-10 23:57:00,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 23:57:00,906 INFO L276 IsEmpty]: Start isEmpty. Operand 11344 states and 18321 transitions. [2022-01-10 23:57:00,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 23:57:00,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:57:00,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:57:00,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 23:57:00,959 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:57:00,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:57:00,960 INFO L85 PathProgramCache]: Analyzing trace with hash -536512561, now seen corresponding path program 1 times [2022-01-10 23:57:00,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:57:00,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592369460] [2022-01-10 23:57:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:57:00,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:57:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:57:01,109 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 23:57:01,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:57:01,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592369460] [2022-01-10 23:57:01,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592369460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:57:01,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:57:01,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 23:57:01,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565245450] [2022-01-10 23:57:01,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:57:01,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:57:01,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:57:01,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:57:01,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:57:01,111 INFO L87 Difference]: Start difference. First operand 11344 states and 18321 transitions. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 23:57:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:57:03,635 INFO L93 Difference]: Finished difference Result 22426 states and 36154 transitions. [2022-01-10 23:57:03,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:57:03,636 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 23:57:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:57:03,656 INFO L225 Difference]: With dead ends: 22426 [2022-01-10 23:57:03,657 INFO L226 Difference]: Without dead ends: 13042 [2022-01-10 23:57:03,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2022-01-10 23:57:03,666 INFO L933 BasicCegarLoop]: 1189 mSDtfsCounter, 4103 mSDsluCounter, 5007 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4103 SdHoareTripleChecker+Valid, 6196 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:57:03,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4103 Valid, 6196 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:57:03,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13042 states. [2022-01-10 23:57:05,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13042 to 11344. [2022-01-10 23:57:05,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11344 states, 11341 states have (on average 1.6070011462833966) internal successors, (18225), 11343 states have internal predecessors, (18225), 0 states have call successors, (0), 0 states 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 23:57:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11344 states to 11344 states and 18225 transitions. [2022-01-10 23:57:05,540 INFO L78 Accepts]: Start accepts. Automaton has 11344 states and 18225 transitions. Word has length 106 [2022-01-10 23:57:05,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:57:05,540 INFO L470 AbstractCegarLoop]: Abstraction has 11344 states and 18225 transitions. [2022-01-10 23:57:05,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 23:57:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand 11344 states and 18225 transitions. [2022-01-10 23:57:05,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 23:57:05,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:57:05,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:57:05,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 23:57:05,553 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:57:05,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:57:05,553 INFO L85 PathProgramCache]: Analyzing trace with hash -544271920, now seen corresponding path program 1 times [2022-01-10 23:57:05,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:57:05,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197149398] [2022-01-10 23:57:05,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:57:05,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:57:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:57:05,671 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 23:57:05,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:57:05,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197149398] [2022-01-10 23:57:05,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197149398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:57:05,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:57:05,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:57:05,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578592635] [2022-01-10 23:57:05,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:57:05,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:57:05,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:57:05,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:57:05,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:57:05,673 INFO L87 Difference]: Start difference. First operand 11344 states and 18225 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 23:57:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:57:11,160 INFO L93 Difference]: Finished difference Result 37194 states and 59506 transitions. [2022-01-10 23:57:11,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:57:11,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 23:57:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:57:11,208 INFO L225 Difference]: With dead ends: 37194 [2022-01-10 23:57:11,209 INFO L226 Difference]: Without dead ends: 32178 [2022-01-10 23:57:11,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:57:11,219 INFO L933 BasicCegarLoop]: 1408 mSDtfsCounter, 2979 mSDsluCounter, 3961 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2979 SdHoareTripleChecker+Valid, 5369 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:57:11,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2979 Valid, 5369 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:57:11,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32178 states. [2022-01-10 23:57:14,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32178 to 21324. [2022-01-10 23:57:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21324 states, 21321 states have (on average 1.6057877210262184) internal successors, (34237), 21323 states have internal predecessors, (34237), 0 states have call successors, (0), 0 states 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 23:57:14,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21324 states to 21324 states and 34237 transitions. [2022-01-10 23:57:14,928 INFO L78 Accepts]: Start accepts. Automaton has 21324 states and 34237 transitions. Word has length 106 [2022-01-10 23:57:14,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:57:14,928 INFO L470 AbstractCegarLoop]: Abstraction has 21324 states and 34237 transitions. [2022-01-10 23:57:14,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 23:57:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 21324 states and 34237 transitions. [2022-01-10 23:57:14,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 23:57:14,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:57:14,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:57:14,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 23:57:14,946 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:57:14,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:57:14,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2080457918, now seen corresponding path program 1 times [2022-01-10 23:57:14,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:57:14,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536865613] [2022-01-10 23:57:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:57:14,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:57:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:57:15,106 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 23:57:15,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:57:15,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536865613] [2022-01-10 23:57:15,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536865613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:57:15,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:57:15,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:57:15,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183787801] [2022-01-10 23:57:15,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:57:15,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:57:15,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:57:15,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:57:15,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:57:15,108 INFO L87 Difference]: Start difference. First operand 21324 states and 34237 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)