/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/combinations/Problem05_label43+token_ring.03.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:13:31,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:13:31,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:13:31,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:13:31,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:13:31,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:13:31,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:13:31,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:13:31,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:13:31,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:13:31,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:13:32,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:13:32,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:13:32,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:13:32,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:13:32,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:13:32,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:13:32,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:13:32,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:13:32,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:13:32,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:13:32,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:13:32,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:13:32,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:13:32,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 01:13:32,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 01:13:32,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 01:13:32,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 01:13:32,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 01:13:32,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 01:13:32,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 01:13:32,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 01:13:32,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 01:13:32,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 01:13:32,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 01:13:32,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 01:13:32,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 01:13:32,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 01:13:32,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:13:32,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:13:32,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:13:32,037 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 [2022-01-11 01:13:32,068 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:13:32,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:13:32,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:13:32,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:13:32,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:13:32,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:13:32,070 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:13:32,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:13:32,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:13:32,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:13:32,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:13:32,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:13:32,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:13:32,070 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:13:32,070 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:13:32,070 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:13:32,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:13:32,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:13:32,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:13:32,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:13:32,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:13:32,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:13:32,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:13:32,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:13:32,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:13:32,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:13:32,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:13:32,072 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:13:32,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:13:32,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:13:32,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:13:32,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:13:32,072 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:13:32,072 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:13:32,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:13:32,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:13:32,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:13:32,245 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:13:32,245 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:13:32,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.03.cil-2.c [2022-01-11 01:13:32,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d15d8b88/c7b943e4dfd144128628d5c771d8eeb2/FLAG55d175921 [2022-01-11 01:13:32,958 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:13:32,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.03.cil-2.c [2022-01-11 01:13:33,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d15d8b88/c7b943e4dfd144128628d5c771d8eeb2/FLAG55d175921 [2022-01-11 01:13:33,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d15d8b88/c7b943e4dfd144128628d5c771d8eeb2 [2022-01-11 01:13:33,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:13:33,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:13:33,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:13:33,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:13:33,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:13:33,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:13:33" (1/1) ... [2022-01-11 01:13:33,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a201e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:33, skipping insertion in model container [2022-01-11 01:13:33,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:13:33" (1/1) ... [2022-01-11 01:13:33,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:13:33,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:13:34,434 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.03.cil-2.c[381679,381692] [2022-01-11 01:13:34,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.03.cil-2.c[383339,383352] [2022-01-11 01:13:34,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:13:34,611 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:13:35,148 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.03.cil-2.c[381679,381692] [2022-01-11 01:13:35,151 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.03.cil-2.c[383339,383352] [2022-01-11 01:13:35,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:13:35,196 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:13:35,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:35 WrapperNode [2022-01-11 01:13:35,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:13:35,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:13:35,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:13:35,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:13:35,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:35" (1/1) ... [2022-01-11 01:13:35,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:35" (1/1) ... [2022-01-11 01:13:35,608 INFO L137 Inliner]: procedures = 51, calls = 50, calls flagged for inlining = 45, calls inlined = 72, statements flattened = 13148 [2022-01-11 01:13:35,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:13:35,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:13:35,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:13:35,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:13:35,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:35" (1/1) ... [2022-01-11 01:13:35,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:35" (1/1) ... [2022-01-11 01:13:35,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:35" (1/1) ... [2022-01-11 01:13:35,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:35" (1/1) ... [2022-01-11 01:13:35,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:35" (1/1) ... [2022-01-11 01:13:35,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:35" (1/1) ... [2022-01-11 01:13:35,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:35" (1/1) ... [2022-01-11 01:13:35,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:13:35,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:13:35,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:13:35,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:13:35,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:35" (1/1) ... [2022-01-11 01:13:36,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:13:36,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:13:36,032 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) [2022-01-11 01:13:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:13:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:13:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:13:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:13:36,052 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 [2022-01-11 01:13:36,308 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:13:36,309 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:13:42,974 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:13:42,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:13:42,999 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-01-11 01:13:43,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:13:43 BoogieIcfgContainer [2022-01-11 01:13:43,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:13:43,004 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:13:43,004 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:13:43,005 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:13:43,008 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:13:43" (1/1) ... [2022-01-11 01:13:44,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:13:44 BasicIcfg [2022-01-11 01:13:44,161 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:13:44,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:13:44,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:13:44,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:13:44,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:13:33" (1/4) ... [2022-01-11 01:13:44,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4c5fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:13:44, skipping insertion in model container [2022-01-11 01:13:44,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:35" (2/4) ... [2022-01-11 01:13:44,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4c5fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:13:44, skipping insertion in model container [2022-01-11 01:13:44,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:13:43" (3/4) ... [2022-01-11 01:13:44,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4c5fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:13:44, skipping insertion in model container [2022-01-11 01:13:44,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:13:44" (4/4) ... [2022-01-11 01:13:44,167 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.03.cil-2.cTransformedIcfg [2022-01-11 01:13:44,170 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:13:44,170 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 01:13:44,205 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:13:44,212 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 [2022-01-11 01:13:44,213 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 01:13:44,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 2508 states, 2505 states have (on average 1.8287425149700598) internal successors, (4581), 2507 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:13:44,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:44,389 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] [2022-01-11 01:13:44,390 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:44,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:44,402 INFO L85 PathProgramCache]: Analyzing trace with hash -192499067, now seen corresponding path program 1 times [2022-01-11 01:13:44,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:44,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984435549] [2022-01-11 01:13:44,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:44,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:44,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:44,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984435549] [2022-01-11 01:13:44,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984435549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:44,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:44,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:44,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311874639] [2022-01-11 01:13:44,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:44,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:44,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:44,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:44,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:44,675 INFO L87 Difference]: Start difference. First operand has 2508 states, 2505 states have (on average 1.8287425149700598) internal successors, (4581), 2507 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:44,914 INFO L93 Difference]: Finished difference Result 5244 states and 9511 transitions. [2022-01-11 01:13:44,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:44,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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 [2022-01-11 01:13:44,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:44,967 INFO L225 Difference]: With dead ends: 5244 [2022-01-11 01:13:44,967 INFO L226 Difference]: Without dead ends: 2676 [2022-01-11 01:13:44,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:44,975 INFO L933 BasicCegarLoop]: 4498 mSDtfsCounter, 4446 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 4888 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:44,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4446 Valid, 4888 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:45,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2022-01-11 01:13:45,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2674. [2022-01-11 01:13:45,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7892964071856288) internal successors, (4781), 2673 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4781 transitions. [2022-01-11 01:13:45,082 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4781 transitions. Word has length 66 [2022-01-11 01:13:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:45,082 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4781 transitions. [2022-01-11 01:13:45,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4781 transitions. [2022-01-11 01:13:45,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:13:45,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:45,084 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] [2022-01-11 01:13:45,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:13:45,085 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:45,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:45,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1072602789, now seen corresponding path program 1 times [2022-01-11 01:13:45,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:45,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002379994] [2022-01-11 01:13:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:45,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:45,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:45,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002379994] [2022-01-11 01:13:45,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002379994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:45,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:45,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:45,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392890297] [2022-01-11 01:13:45,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:45,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:45,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:45,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:45,135 INFO L87 Difference]: Start difference. First operand 2674 states and 4781 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:45,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:45,196 INFO L93 Difference]: Finished difference Result 3215 states and 5586 transitions. [2022-01-11 01:13:45,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:45,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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 [2022-01-11 01:13:45,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:45,204 INFO L225 Difference]: With dead ends: 3215 [2022-01-11 01:13:45,205 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 01:13:45,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:45,207 INFO L933 BasicCegarLoop]: 4425 mSDtfsCounter, 4418 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 4425 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:45,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 4425 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:45,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 01:13:45,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 01:13:45,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.786302395209581) internal successors, (4773), 2673 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:45,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4773 transitions. [2022-01-11 01:13:45,270 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4773 transitions. Word has length 66 [2022-01-11 01:13:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:45,270 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4773 transitions. [2022-01-11 01:13:45,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4773 transitions. [2022-01-11 01:13:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:13:45,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:45,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:45,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:13:45,272 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:45,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:45,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1721963205, now seen corresponding path program 1 times [2022-01-11 01:13:45,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:45,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245029126] [2022-01-11 01:13:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:45,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:45,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:45,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245029126] [2022-01-11 01:13:45,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245029126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:45,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:45,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:45,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531926599] [2022-01-11 01:13:45,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:45,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:45,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:45,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:45,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:45,344 INFO L87 Difference]: Start difference. First operand 2674 states and 4773 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:45,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:45,390 INFO L93 Difference]: Finished difference Result 3214 states and 5569 transitions. [2022-01-11 01:13:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:45,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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 [2022-01-11 01:13:45,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:45,398 INFO L225 Difference]: With dead ends: 3214 [2022-01-11 01:13:45,398 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 01:13:45,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:45,404 INFO L933 BasicCegarLoop]: 4420 mSDtfsCounter, 4412 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4412 SdHoareTripleChecker+Valid, 4420 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:45,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4412 Valid, 4420 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:45,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 01:13:45,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 01:13:45,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.783308383233533) internal successors, (4765), 2673 states have internal predecessors, (4765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:45,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4765 transitions. [2022-01-11 01:13:45,454 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4765 transitions. Word has length 66 [2022-01-11 01:13:45,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:45,454 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4765 transitions. [2022-01-11 01:13:45,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:45,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4765 transitions. [2022-01-11 01:13:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:13:45,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:45,459 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] [2022-01-11 01:13:45,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:13:45,459 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:45,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:45,460 INFO L85 PathProgramCache]: Analyzing trace with hash -612394331, now seen corresponding path program 1 times [2022-01-11 01:13:45,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:45,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267168655] [2022-01-11 01:13:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:45,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:45,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:45,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267168655] [2022-01-11 01:13:45,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267168655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:45,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:45,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:45,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408120566] [2022-01-11 01:13:45,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:45,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:45,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:45,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:45,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:45,535 INFO L87 Difference]: Start difference. First operand 2674 states and 4765 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:45,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:45,591 INFO L93 Difference]: Finished difference Result 3213 states and 5552 transitions. [2022-01-11 01:13:45,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:45,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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 [2022-01-11 01:13:45,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:45,599 INFO L225 Difference]: With dead ends: 3213 [2022-01-11 01:13:45,599 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 01:13:45,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:45,601 INFO L933 BasicCegarLoop]: 4403 mSDtfsCounter, 4358 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:45,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4358 Valid, 4441 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:45,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 01:13:45,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 01:13:45,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.776571856287425) internal successors, (4747), 2673 states have internal predecessors, (4747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:45,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4747 transitions. [2022-01-11 01:13:45,644 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4747 transitions. Word has length 66 [2022-01-11 01:13:45,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:45,644 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4747 transitions. [2022-01-11 01:13:45,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:45,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4747 transitions. [2022-01-11 01:13:45,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:13:45,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:45,645 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] [2022-01-11 01:13:45,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:13:45,645 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:45,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:45,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1083451324, now seen corresponding path program 1 times [2022-01-11 01:13:45,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:45,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796068914] [2022-01-11 01:13:45,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:45,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:45,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:45,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796068914] [2022-01-11 01:13:45,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796068914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:45,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:45,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:45,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228332083] [2022-01-11 01:13:45,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:45,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:45,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:45,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:45,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:45,675 INFO L87 Difference]: Start difference. First operand 2674 states and 4747 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:45,733 INFO L93 Difference]: Finished difference Result 3212 states and 5515 transitions. [2022-01-11 01:13:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:45,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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 [2022-01-11 01:13:45,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:45,740 INFO L225 Difference]: With dead ends: 3212 [2022-01-11 01:13:45,741 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 01:13:45,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:45,742 INFO L933 BasicCegarLoop]: 4392 mSDtfsCounter, 4347 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4347 SdHoareTripleChecker+Valid, 4429 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:45,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4347 Valid, 4429 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:45,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 01:13:45,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 01:13:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7698353293413174) internal successors, (4729), 2673 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:45,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4729 transitions. [2022-01-11 01:13:45,788 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4729 transitions. Word has length 66 [2022-01-11 01:13:45,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:45,788 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4729 transitions. [2022-01-11 01:13:45,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:45,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4729 transitions. [2022-01-11 01:13:45,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:13:45,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:45,789 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] [2022-01-11 01:13:45,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:13:45,789 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:45,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:45,790 INFO L85 PathProgramCache]: Analyzing trace with hash 40166627, now seen corresponding path program 1 times [2022-01-11 01:13:45,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:45,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10797338] [2022-01-11 01:13:45,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:45,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:45,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:45,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10797338] [2022-01-11 01:13:45,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10797338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:45,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:45,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:45,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503781930] [2022-01-11 01:13:45,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:45,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:45,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:45,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:45,814 INFO L87 Difference]: Start difference. First operand 2674 states and 4729 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:46,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:46,018 INFO L93 Difference]: Finished difference Result 3211 states and 5478 transitions. [2022-01-11 01:13:46,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:46,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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 [2022-01-11 01:13:46,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:46,025 INFO L225 Difference]: With dead ends: 3211 [2022-01-11 01:13:46,025 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 01:13:46,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:46,027 INFO L933 BasicCegarLoop]: 4381 mSDtfsCounter, 4336 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4336 SdHoareTripleChecker+Valid, 4417 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:46,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4336 Valid, 4417 Invalid, 25 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:46,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 01:13:46,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 01:13:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7630988023952097) internal successors, (4711), 2673 states have internal predecessors, (4711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4711 transitions. [2022-01-11 01:13:46,077 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4711 transitions. Word has length 66 [2022-01-11 01:13:46,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:46,077 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4711 transitions. [2022-01-11 01:13:46,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:46,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4711 transitions. [2022-01-11 01:13:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:13:46,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:46,078 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] [2022-01-11 01:13:46,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:13:46,078 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:46,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:46,078 INFO L85 PathProgramCache]: Analyzing trace with hash 634433794, now seen corresponding path program 1 times [2022-01-11 01:13:46,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:46,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906658791] [2022-01-11 01:13:46,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:46,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:46,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:46,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906658791] [2022-01-11 01:13:46,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906658791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:46,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:46,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:46,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208866802] [2022-01-11 01:13:46,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:46,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:46,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:46,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:46,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:46,114 INFO L87 Difference]: Start difference. First operand 2674 states and 4711 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:46,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:46,176 INFO L93 Difference]: Finished difference Result 3210 states and 5441 transitions. [2022-01-11 01:13:46,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:46,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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 [2022-01-11 01:13:46,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:46,184 INFO L225 Difference]: With dead ends: 3210 [2022-01-11 01:13:46,184 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 01:13:46,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:46,186 INFO L933 BasicCegarLoop]: 4370 mSDtfsCounter, 4325 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4325 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:46,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4325 Valid, 4405 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:46,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 01:13:46,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 01:13:46,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7563622754491017) internal successors, (4693), 2673 states have internal predecessors, (4693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4693 transitions. [2022-01-11 01:13:46,257 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4693 transitions. Word has length 66 [2022-01-11 01:13:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:46,257 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4693 transitions. [2022-01-11 01:13:46,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:46,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4693 transitions. [2022-01-11 01:13:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:13:46,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:46,258 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] [2022-01-11 01:13:46,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:13:46,258 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:46,259 INFO L85 PathProgramCache]: Analyzing trace with hash 299768865, now seen corresponding path program 1 times [2022-01-11 01:13:46,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:46,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488039828] [2022-01-11 01:13:46,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:46,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:46,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:46,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488039828] [2022-01-11 01:13:46,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488039828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:46,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:46,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:13:46,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701744839] [2022-01-11 01:13:46,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:46,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:13:46,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:46,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:13:46,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:13:46,318 INFO L87 Difference]: Start difference. First operand 2674 states and 4693 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2022-01-11 01:13:46,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:46,455 INFO L93 Difference]: Finished difference Result 3548 states and 5872 transitions. [2022-01-11 01:13:46,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:13:46,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 [2022-01-11 01:13:46,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:46,464 INFO L225 Difference]: With dead ends: 3548 [2022-01-11 01:13:46,464 INFO L226 Difference]: Without dead ends: 3026 [2022-01-11 01:13:46,465 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 [2022-01-11 01:13:46,465 INFO L933 BasicCegarLoop]: 4399 mSDtfsCounter, 1041 mSDsluCounter, 12669 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 17068 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:46,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 17068 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2022-01-11 01:13:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2680. [2022-01-11 01:13:46,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2678 states have (on average 1.7509335324869306) internal successors, (4689), 2679 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:46,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 4689 transitions. [2022-01-11 01:13:46,523 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 4689 transitions. Word has length 66 [2022-01-11 01:13:46,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:46,524 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 4689 transitions. [2022-01-11 01:13:46,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2022-01-11 01:13:46,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 4689 transitions. [2022-01-11 01:13:46,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:13:46,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:46,525 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] [2022-01-11 01:13:46,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:13:46,525 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:46,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:46,525 INFO L85 PathProgramCache]: Analyzing trace with hash 629534626, now seen corresponding path program 1 times [2022-01-11 01:13:46,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:46,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746106312] [2022-01-11 01:13:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:46,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:46,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:46,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746106312] [2022-01-11 01:13:46,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746106312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:46,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:46,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:46,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661791908] [2022-01-11 01:13:46,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:46,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:46,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:46,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:46,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:46,560 INFO L87 Difference]: Start difference. First operand 2680 states and 4689 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:46,620 INFO L93 Difference]: Finished difference Result 3228 states and 5404 transitions. [2022-01-11 01:13:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:46,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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 [2022-01-11 01:13:46,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:46,639 INFO L225 Difference]: With dead ends: 3228 [2022-01-11 01:13:46,640 INFO L226 Difference]: Without dead ends: 2680 [2022-01-11 01:13:46,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:46,643 INFO L933 BasicCegarLoop]: 4365 mSDtfsCounter, 4326 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4326 SdHoareTripleChecker+Valid, 4365 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:46,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4326 Valid, 4365 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:46,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2022-01-11 01:13:46,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2680. [2022-01-11 01:13:46,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2678 states have (on average 1.7479462285287528) internal successors, (4681), 2679 states have internal predecessors, (4681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 4681 transitions. [2022-01-11 01:13:46,707 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 4681 transitions. Word has length 66 [2022-01-11 01:13:46,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:46,707 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 4681 transitions. [2022-01-11 01:13:46,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:46,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 4681 transitions. [2022-01-11 01:13:46,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:13:46,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:46,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:46,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 01:13:46,708 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:46,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:46,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1408521663, now seen corresponding path program 1 times [2022-01-11 01:13:46,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:46,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421173174] [2022-01-11 01:13:46,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:46,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:46,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:46,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421173174] [2022-01-11 01:13:46,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421173174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:46,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:46,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:46,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364726296] [2022-01-11 01:13:46,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:46,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:46,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:46,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:46,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:46,744 INFO L87 Difference]: Start difference. First operand 2680 states and 4681 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:46,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:46,837 INFO L93 Difference]: Finished difference Result 3704 states and 6012 transitions. [2022-01-11 01:13:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:46,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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 [2022-01-11 01:13:46,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:46,843 INFO L225 Difference]: With dead ends: 3704 [2022-01-11 01:13:46,843 INFO L226 Difference]: Without dead ends: 3164 [2022-01-11 01:13:46,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:46,845 INFO L933 BasicCegarLoop]: 4360 mSDtfsCounter, 4285 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4285 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:46,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4285 Valid, 4689 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:46,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2022-01-11 01:13:47,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 3104. [2022-01-11 01:13:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3102 states have (on average 1.683752417794971) internal successors, (5223), 3103 states have internal predecessors, (5223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5223 transitions. [2022-01-11 01:13:47,037 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5223 transitions. Word has length 66 [2022-01-11 01:13:47,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:47,038 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5223 transitions. [2022-01-11 01:13:47,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 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) [2022-01-11 01:13:47,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5223 transitions. [2022-01-11 01:13:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 01:13:47,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:47,039 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:47,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 01:13:47,040 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:47,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:47,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1749508058, now seen corresponding path program 1 times [2022-01-11 01:13:47,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:47,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234274047] [2022-01-11 01:13:47,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:47,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:47,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:47,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234274047] [2022-01-11 01:13:47,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234274047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:47,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:47,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:13:47,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382571344] [2022-01-11 01:13:47,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:47,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:47,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:47,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:47,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:47,095 INFO L87 Difference]: Start difference. First operand 3104 states and 5223 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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) [2022-01-11 01:13:47,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:47,259 INFO L93 Difference]: Finished difference Result 4926 states and 7579 transitions. [2022-01-11 01:13:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:47,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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 [2022-01-11 01:13:47,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:47,268 INFO L225 Difference]: With dead ends: 4926 [2022-01-11 01:13:47,268 INFO L226 Difference]: Without dead ends: 3968 [2022-01-11 01:13:47,270 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 [2022-01-11 01:13:47,270 INFO L933 BasicCegarLoop]: 4357 mSDtfsCounter, 4291 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4291 SdHoareTripleChecker+Valid, 4686 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:47,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4291 Valid, 4686 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:47,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2022-01-11 01:13:47,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3878. [2022-01-11 01:13:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3876 states have (on average 1.6034571723426212) internal successors, (6215), 3877 states have internal predecessors, (6215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:47,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 6215 transitions. [2022-01-11 01:13:47,415 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 6215 transitions. Word has length 106 [2022-01-11 01:13:47,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:47,416 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 6215 transitions. [2022-01-11 01:13:47,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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) [2022-01-11 01:13:47,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 6215 transitions. [2022-01-11 01:13:47,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 01:13:47,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:47,419 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:47,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:13:47,420 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:47,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:47,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1917210522, now seen corresponding path program 1 times [2022-01-11 01:13:47,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:47,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643609658] [2022-01-11 01:13:47,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:47,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:47,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:47,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643609658] [2022-01-11 01:13:47,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643609658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:47,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:47,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:13:47,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787815334] [2022-01-11 01:13:47,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:47,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:47,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:47,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:47,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:47,477 INFO L87 Difference]: Start difference. First operand 3878 states and 6215 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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) [2022-01-11 01:13:47,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:47,684 INFO L93 Difference]: Finished difference Result 7131 states and 10359 transitions. [2022-01-11 01:13:47,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:47,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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 [2022-01-11 01:13:47,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:47,695 INFO L225 Difference]: With dead ends: 7131 [2022-01-11 01:13:47,695 INFO L226 Difference]: Without dead ends: 5427 [2022-01-11 01:13:47,699 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 [2022-01-11 01:13:47,701 INFO L933 BasicCegarLoop]: 4480 mSDtfsCounter, 4216 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4216 SdHoareTripleChecker+Valid, 4868 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:47,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4216 Valid, 4868 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:47,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5427 states. [2022-01-11 01:13:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5427 to 5425. [2022-01-11 01:13:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5425 states, 5423 states have (on average 1.4993546007744791) internal successors, (8131), 5424 states have internal predecessors, (8131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:47,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 8131 transitions. [2022-01-11 01:13:47,938 INFO L78 Accepts]: Start accepts. Automaton has 5425 states and 8131 transitions. Word has length 106 [2022-01-11 01:13:47,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:47,939 INFO L470 AbstractCegarLoop]: Abstraction has 5425 states and 8131 transitions. [2022-01-11 01:13:47,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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) [2022-01-11 01:13:47,939 INFO L276 IsEmpty]: Start isEmpty. Operand 5425 states and 8131 transitions. [2022-01-11 01:13:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 01:13:47,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:47,943 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:47,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:13:47,943 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:47,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:47,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1179021509, now seen corresponding path program 1 times [2022-01-11 01:13:47,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:47,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216131646] [2022-01-11 01:13:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:47,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:13:47,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:47,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216131646] [2022-01-11 01:13:47,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216131646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:47,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:47,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:13:47,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863674878] [2022-01-11 01:13:47,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:47,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:47,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:47,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:47,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:47,977 INFO L87 Difference]: Start difference. First operand 5425 states and 8131 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:48,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:48,135 INFO L93 Difference]: Finished difference Result 8629 states and 12188 transitions. [2022-01-11 01:13:48,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:48,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 [2022-01-11 01:13:48,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:48,144 INFO L225 Difference]: With dead ends: 8629 [2022-01-11 01:13:48,145 INFO L226 Difference]: Without dead ends: 5378 [2022-01-11 01:13:48,149 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 [2022-01-11 01:13:48,150 INFO L933 BasicCegarLoop]: 4364 mSDtfsCounter, 402 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 8322 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:48,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 8322 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:48,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2022-01-11 01:13:48,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5378. [2022-01-11 01:13:48,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5376 states have (on average 1.5022321428571428) internal successors, (8076), 5377 states have internal predecessors, (8076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 8076 transitions. [2022-01-11 01:13:48,321 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 8076 transitions. Word has length 106 [2022-01-11 01:13:48,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:48,321 INFO L470 AbstractCegarLoop]: Abstraction has 5378 states and 8076 transitions. [2022-01-11 01:13:48,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:48,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 8076 transitions. [2022-01-11 01:13:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 01:13:48,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:48,323 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:48,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 01:13:48,323 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:48,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:48,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1232421230, now seen corresponding path program 1 times [2022-01-11 01:13:48,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:48,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130820924] [2022-01-11 01:13:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:48,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:48,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:48,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130820924] [2022-01-11 01:13:48,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130820924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:48,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:48,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:13:48,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725608684] [2022-01-11 01:13:48,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:48,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:48,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:48,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:48,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:48,354 INFO L87 Difference]: Start difference. First operand 5378 states and 8076 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 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) [2022-01-11 01:13:48,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:48,685 INFO L93 Difference]: Finished difference Result 11424 states and 15698 transitions. [2022-01-11 01:13:48,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:48,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 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) Word has length 107 [2022-01-11 01:13:48,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:48,701 INFO L225 Difference]: With dead ends: 11424 [2022-01-11 01:13:48,702 INFO L226 Difference]: Without dead ends: 8220 [2022-01-11 01:13:48,709 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 [2022-01-11 01:13:48,710 INFO L933 BasicCegarLoop]: 4459 mSDtfsCounter, 4301 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 4839 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:48,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4301 Valid, 4839 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:48,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8220 states. [2022-01-11 01:13:49,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8220 to 8042. [2022-01-11 01:13:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8042 states, 8040 states have (on average 1.4149253731343283) internal successors, (11376), 8041 states have internal predecessors, (11376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:49,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8042 states to 8042 states and 11376 transitions. [2022-01-11 01:13:49,071 INFO L78 Accepts]: Start accepts. Automaton has 8042 states and 11376 transitions. Word has length 107 [2022-01-11 01:13:49,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:49,072 INFO L470 AbstractCegarLoop]: Abstraction has 8042 states and 11376 transitions. [2022-01-11 01:13:49,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 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) [2022-01-11 01:13:49,072 INFO L276 IsEmpty]: Start isEmpty. Operand 8042 states and 11376 transitions. [2022-01-11 01:13:49,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 01:13:49,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:49,075 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:49,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 01:13:49,075 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:49,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:49,076 INFO L85 PathProgramCache]: Analyzing trace with hash -214202641, now seen corresponding path program 1 times [2022-01-11 01:13:49,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:49,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636099253] [2022-01-11 01:13:49,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:49,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:13:49,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:49,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636099253] [2022-01-11 01:13:49,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636099253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:49,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:49,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:13:49,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215647431] [2022-01-11 01:13:49,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:49,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:49,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:49,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:49,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:49,101 INFO L87 Difference]: Start difference. First operand 8042 states and 11376 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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) [2022-01-11 01:13:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:49,415 INFO L93 Difference]: Finished difference Result 13881 states and 18700 transitions. [2022-01-11 01:13:49,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:49,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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 107 [2022-01-11 01:13:49,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:49,430 INFO L225 Difference]: With dead ends: 13881 [2022-01-11 01:13:49,430 INFO L226 Difference]: Without dead ends: 7996 [2022-01-11 01:13:49,440 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 [2022-01-11 01:13:49,441 INFO L933 BasicCegarLoop]: 4363 mSDtfsCounter, 400 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 8321 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:49,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 8321 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:49,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2022-01-11 01:13:49,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 7996. [2022-01-11 01:13:49,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7996 states, 7994 states have (on average 1.416437327995997) internal successors, (11323), 7995 states have internal predecessors, (11323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:49,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7996 states to 7996 states and 11323 transitions. [2022-01-11 01:13:49,750 INFO L78 Accepts]: Start accepts. Automaton has 7996 states and 11323 transitions. Word has length 107 [2022-01-11 01:13:49,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:49,750 INFO L470 AbstractCegarLoop]: Abstraction has 7996 states and 11323 transitions. [2022-01-11 01:13:49,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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) [2022-01-11 01:13:49,750 INFO L276 IsEmpty]: Start isEmpty. Operand 7996 states and 11323 transitions. [2022-01-11 01:13:49,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 01:13:49,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:49,753 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:49,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:13:49,753 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:49,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:49,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1030341816, now seen corresponding path program 1 times [2022-01-11 01:13:49,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:49,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906748085] [2022-01-11 01:13:49,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:49,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:49,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:49,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906748085] [2022-01-11 01:13:49,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906748085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:49,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:49,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:13:49,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634798197] [2022-01-11 01:13:49,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:49,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:49,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:49,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:49,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:49,790 INFO L87 Difference]: Start difference. First operand 7996 states and 11323 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:50,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:50,176 INFO L93 Difference]: Finished difference Result 18693 states and 24687 transitions. [2022-01-11 01:13:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:50,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-11 01:13:50,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:50,200 INFO L225 Difference]: With dead ends: 18693 [2022-01-11 01:13:50,201 INFO L226 Difference]: Without dead ends: 12871 [2022-01-11 01:13:50,212 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 [2022-01-11 01:13:50,213 INFO L933 BasicCegarLoop]: 4423 mSDtfsCounter, 4300 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4300 SdHoareTripleChecker+Valid, 4801 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:50,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4300 Valid, 4801 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:50,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12871 states. [2022-01-11 01:13:50,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12871 to 12741. [2022-01-11 01:13:50,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12741 states, 12739 states have (on average 1.3499489755867808) internal successors, (17197), 12740 states have internal predecessors, (17197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12741 states to 12741 states and 17197 transitions. [2022-01-11 01:13:50,701 INFO L78 Accepts]: Start accepts. Automaton has 12741 states and 17197 transitions. Word has length 108 [2022-01-11 01:13:50,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:50,701 INFO L470 AbstractCegarLoop]: Abstraction has 12741 states and 17197 transitions. [2022-01-11 01:13:50,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:50,701 INFO L276 IsEmpty]: Start isEmpty. Operand 12741 states and 17197 transitions. [2022-01-11 01:13:50,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 01:13:50,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:50,705 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:50,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 01:13:50,706 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:50,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:50,706 INFO L85 PathProgramCache]: Analyzing trace with hash -565119399, now seen corresponding path program 1 times [2022-01-11 01:13:50,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:50,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920142506] [2022-01-11 01:13:50,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:50,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:13:50,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:50,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920142506] [2022-01-11 01:13:50,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920142506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:50,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:50,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:13:50,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027833711] [2022-01-11 01:13:50,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:50,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:50,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:50,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:50,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:50,728 INFO L87 Difference]: Start difference. First operand 12741 states and 17197 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 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) [2022-01-11 01:13:51,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:51,144 INFO L93 Difference]: Finished difference Result 23273 states and 30336 transitions. [2022-01-11 01:13:51,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:51,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 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 108 [2022-01-11 01:13:51,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:51,171 INFO L225 Difference]: With dead ends: 23273 [2022-01-11 01:13:51,171 INFO L226 Difference]: Without dead ends: 12696 [2022-01-11 01:13:51,184 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 [2022-01-11 01:13:51,185 INFO L933 BasicCegarLoop]: 4362 mSDtfsCounter, 398 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 8320 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:51,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 8320 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:51,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12696 states. [2022-01-11 01:13:51,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12696 to 12696. [2022-01-11 01:13:51,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12696 states, 12694 states have (on average 1.3507168741137545) internal successors, (17146), 12695 states have internal predecessors, (17146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12696 states to 12696 states and 17146 transitions. [2022-01-11 01:13:51,649 INFO L78 Accepts]: Start accepts. Automaton has 12696 states and 17146 transitions. Word has length 108 [2022-01-11 01:13:51,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:51,649 INFO L470 AbstractCegarLoop]: Abstraction has 12696 states and 17146 transitions. [2022-01-11 01:13:51,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 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) [2022-01-11 01:13:51,649 INFO L276 IsEmpty]: Start isEmpty. Operand 12696 states and 17146 transitions. [2022-01-11 01:13:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-11 01:13:51,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:51,654 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:51,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 01:13:51,655 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:51,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:51,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1529338429, now seen corresponding path program 1 times [2022-01-11 01:13:51,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:51,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114371993] [2022-01-11 01:13:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:51,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:51,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:51,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114371993] [2022-01-11 01:13:51,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114371993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:51,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:51,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:13:51,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036980071] [2022-01-11 01:13:51,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:51,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:51,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:51,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:51,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:51,718 INFO L87 Difference]: Start difference. First operand 12696 states and 17146 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:52,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:52,509 INFO L93 Difference]: Finished difference Result 32442 states and 41712 transitions. [2022-01-11 01:13:52,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:52,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-11 01:13:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:52,556 INFO L225 Difference]: With dead ends: 32442 [2022-01-11 01:13:52,556 INFO L226 Difference]: Without dead ends: 21920 [2022-01-11 01:13:52,570 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 [2022-01-11 01:13:52,571 INFO L933 BasicCegarLoop]: 4695 mSDtfsCounter, 331 mSDsluCounter, 4342 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 9037 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:52,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 9037 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21920 states. [2022-01-11 01:13:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21920 to 21920. [2022-01-11 01:13:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21920 states, 21918 states have (on average 1.2924080664294186) internal successors, (28327), 21919 states have internal predecessors, (28327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21920 states to 21920 states and 28327 transitions. [2022-01-11 01:13:53,330 INFO L78 Accepts]: Start accepts. Automaton has 21920 states and 28327 transitions. Word has length 109 [2022-01-11 01:13:53,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:53,331 INFO L470 AbstractCegarLoop]: Abstraction has 21920 states and 28327 transitions. [2022-01-11 01:13:53,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:53,331 INFO L276 IsEmpty]: Start isEmpty. Operand 21920 states and 28327 transitions. [2022-01-11 01:13:53,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-11 01:13:53,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:53,343 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:53,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 01:13:53,343 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:53,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:53,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2145762161, now seen corresponding path program 1 times [2022-01-11 01:13:53,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:53,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317313342] [2022-01-11 01:13:53,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:53,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:53,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:53,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317313342] [2022-01-11 01:13:53,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317313342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:53,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:53,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:53,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14268285] [2022-01-11 01:13:53,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:53,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:53,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:53,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:53,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:53,383 INFO L87 Difference]: Start difference. First operand 21920 states and 28327 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:54,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:54,501 INFO L93 Difference]: Finished difference Result 50438 states and 63377 transitions. [2022-01-11 01:13:54,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:54,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-01-11 01:13:54,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:54,554 INFO L225 Difference]: With dead ends: 50438 [2022-01-11 01:13:54,554 INFO L226 Difference]: Without dead ends: 30696 [2022-01-11 01:13:54,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:54,574 INFO L933 BasicCegarLoop]: 4354 mSDtfsCounter, 4202 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4202 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:54,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4202 Valid, 4683 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:54,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30696 states. [2022-01-11 01:13:55,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30696 to 30566. [2022-01-11 01:13:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30566 states, 30564 states have (on average 1.2666862976050255) internal successors, (38715), 30565 states have internal predecessors, (38715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:55,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30566 states to 30566 states and 38715 transitions. [2022-01-11 01:13:55,851 INFO L78 Accepts]: Start accepts. Automaton has 30566 states and 38715 transitions. Word has length 140 [2022-01-11 01:13:55,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:55,852 INFO L470 AbstractCegarLoop]: Abstraction has 30566 states and 38715 transitions. [2022-01-11 01:13:55,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:55,852 INFO L276 IsEmpty]: Start isEmpty. Operand 30566 states and 38715 transitions. [2022-01-11 01:13:55,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-11 01:13:55,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:55,873 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:55,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 01:13:55,874 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:55,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:55,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1849332874, now seen corresponding path program 1 times [2022-01-11 01:13:55,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:55,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441184761] [2022-01-11 01:13:55,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:55,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:55,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:55,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441184761] [2022-01-11 01:13:55,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441184761] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:55,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:55,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:55,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486840887] [2022-01-11 01:13:55,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:55,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:55,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:55,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:55,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:55,917 INFO L87 Difference]: Start difference. First operand 30566 states and 38715 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:57,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:57,585 INFO L93 Difference]: Finished difference Result 71610 states and 88863 transitions. [2022-01-11 01:13:57,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:57,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-01-11 01:13:57,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:57,646 INFO L225 Difference]: With dead ends: 71610 [2022-01-11 01:13:57,646 INFO L226 Difference]: Without dead ends: 43234 [2022-01-11 01:13:57,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:57,673 INFO L933 BasicCegarLoop]: 4352 mSDtfsCounter, 4204 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 4681 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:57,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4204 Valid, 4681 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:57,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43234 states. [2022-01-11 01:13:59,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43234 to 43040. [2022-01-11 01:13:59,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43040 states, 43038 states have (on average 1.2469677959012966) internal successors, (53667), 43039 states have internal predecessors, (53667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:59,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43040 states to 43040 states and 53667 transitions. [2022-01-11 01:13:59,463 INFO L78 Accepts]: Start accepts. Automaton has 43040 states and 53667 transitions. Word has length 140 [2022-01-11 01:13:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:59,463 INFO L470 AbstractCegarLoop]: Abstraction has 43040 states and 53667 transitions. [2022-01-11 01:13:59,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:59,464 INFO L276 IsEmpty]: Start isEmpty. Operand 43040 states and 53667 transitions. [2022-01-11 01:13:59,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-11 01:13:59,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:59,490 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:59,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 01:13:59,490 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:59,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:59,491 INFO L85 PathProgramCache]: Analyzing trace with hash 292694916, now seen corresponding path program 1 times [2022-01-11 01:13:59,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:59,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721995511] [2022-01-11 01:13:59,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:59,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-11 01:13:59,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:59,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721995511] [2022-01-11 01:13:59,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721995511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:59,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:59,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:13:59,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847668013] [2022-01-11 01:13:59,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:59,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:59,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:59,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:59,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:59,522 INFO L87 Difference]: Start difference. First operand 43040 states and 53667 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:01,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:01,366 INFO L93 Difference]: Finished difference Result 75448 states and 93154 transitions. [2022-01-11 01:14:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:01,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 157 [2022-01-11 01:14:01,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:01,429 INFO L225 Difference]: With dead ends: 75448 [2022-01-11 01:14:01,430 INFO L226 Difference]: Without dead ends: 44000 [2022-01-11 01:14:01,462 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 [2022-01-11 01:14:01,462 INFO L933 BasicCegarLoop]: 4364 mSDtfsCounter, 4272 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4272 SdHoareTripleChecker+Valid, 4741 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:01,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4272 Valid, 4741 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:01,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44000 states. [2022-01-11 01:14:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44000 to 42320. [2022-01-11 01:14:03,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42320 states, 42318 states have (on average 1.2301857365660003) internal successors, (52059), 42319 states have internal predecessors, (52059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42320 states to 42320 states and 52059 transitions. [2022-01-11 01:14:03,542 INFO L78 Accepts]: Start accepts. Automaton has 42320 states and 52059 transitions. Word has length 157 [2022-01-11 01:14:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:03,542 INFO L470 AbstractCegarLoop]: Abstraction has 42320 states and 52059 transitions. [2022-01-11 01:14:03,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:03,542 INFO L276 IsEmpty]: Start isEmpty. Operand 42320 states and 52059 transitions. [2022-01-11 01:14:03,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:14:03,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:03,588 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:14:03,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 01:14:03,589 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:03,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:03,589 INFO L85 PathProgramCache]: Analyzing trace with hash 436238372, now seen corresponding path program 1 times [2022-01-11 01:14:03,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:03,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392954222] [2022-01-11 01:14:03,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:03,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:03,654 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 01:14:03,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:03,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392954222] [2022-01-11 01:14:03,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392954222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:03,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:03,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:03,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730923502] [2022-01-11 01:14:03,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:03,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:03,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:03,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:03,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:03,656 INFO L87 Difference]: Start difference. First operand 42320 states and 52059 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:05,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:05,390 INFO L93 Difference]: Finished difference Result 76996 states and 93573 transitions. [2022-01-11 01:14:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:05,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 158 [2022-01-11 01:14:05,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:05,441 INFO L225 Difference]: With dead ends: 76996 [2022-01-11 01:14:05,441 INFO L226 Difference]: Without dead ends: 36894 [2022-01-11 01:14:05,470 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 [2022-01-11 01:14:05,477 INFO L933 BasicCegarLoop]: 4622 mSDtfsCounter, 287 mSDsluCounter, 4333 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 8955 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:05,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 8955 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:14:05,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36894 states. [2022-01-11 01:14:07,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36894 to 36892. [2022-01-11 01:14:07,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36892 states, 36890 states have (on average 1.225670913526701) internal successors, (45215), 36891 states have internal predecessors, (45215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36892 states to 36892 states and 45215 transitions. [2022-01-11 01:14:07,395 INFO L78 Accepts]: Start accepts. Automaton has 36892 states and 45215 transitions. Word has length 158 [2022-01-11 01:14:07,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:07,395 INFO L470 AbstractCegarLoop]: Abstraction has 36892 states and 45215 transitions. [2022-01-11 01:14:07,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:07,395 INFO L276 IsEmpty]: Start isEmpty. Operand 36892 states and 45215 transitions. [2022-01-11 01:14:07,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:14:07,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:07,410 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:14:07,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 01:14:07,410 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:07,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:07,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1433459742, now seen corresponding path program 1 times [2022-01-11 01:14:07,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:07,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823494291] [2022-01-11 01:14:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:07,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:14:07,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:07,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823494291] [2022-01-11 01:14:07,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823494291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:07,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:07,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:07,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880444928] [2022-01-11 01:14:07,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:07,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:07,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:07,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:07,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:07,502 INFO L87 Difference]: Start difference. First operand 36892 states and 45215 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:09,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:09,071 INFO L93 Difference]: Finished difference Result 61020 states and 74061 transitions. [2022-01-11 01:14:09,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:09,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-11 01:14:09,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:09,116 INFO L225 Difference]: With dead ends: 61020 [2022-01-11 01:14:09,116 INFO L226 Difference]: Without dead ends: 36894 [2022-01-11 01:14:09,131 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 [2022-01-11 01:14:09,138 INFO L933 BasicCegarLoop]: 4634 mSDtfsCounter, 278 mSDsluCounter, 4333 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 8967 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:09,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 8967 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:14:09,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36894 states. [2022-01-11 01:14:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36894 to 36892. [2022-01-11 01:14:10,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36892 states, 36890 states have (on average 1.2214421252371916) internal successors, (45059), 36891 states have internal predecessors, (45059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36892 states to 36892 states and 45059 transitions. [2022-01-11 01:14:10,623 INFO L78 Accepts]: Start accepts. Automaton has 36892 states and 45059 transitions. Word has length 158 [2022-01-11 01:14:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:10,623 INFO L470 AbstractCegarLoop]: Abstraction has 36892 states and 45059 transitions. [2022-01-11 01:14:10,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 36892 states and 45059 transitions. [2022-01-11 01:14:10,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:14:10,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:10,640 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:14:10,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 01:14:10,640 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:10,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:10,641 INFO L85 PathProgramCache]: Analyzing trace with hash -525025355, now seen corresponding path program 1 times [2022-01-11 01:14:10,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:10,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511586052] [2022-01-11 01:14:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:10,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:14:10,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:10,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511586052] [2022-01-11 01:14:10,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511586052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:10,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:10,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:10,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797738626] [2022-01-11 01:14:10,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:10,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:10,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:10,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:10,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:10,743 INFO L87 Difference]: Start difference. First operand 36892 states and 45059 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:12,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:12,357 INFO L93 Difference]: Finished difference Result 60996 states and 73761 transitions. [2022-01-11 01:14:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:12,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-11 01:14:12,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:12,416 INFO L225 Difference]: With dead ends: 60996 [2022-01-11 01:14:12,416 INFO L226 Difference]: Without dead ends: 36894 [2022-01-11 01:14:12,439 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 [2022-01-11 01:14:12,440 INFO L933 BasicCegarLoop]: 4642 mSDtfsCounter, 278 mSDsluCounter, 4339 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 8981 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:12,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 8981 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:14:12,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36894 states. [2022-01-11 01:14:14,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36894 to 36892. [2022-01-11 01:14:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36892 states, 36890 states have (on average 1.2185145025752235) internal successors, (44951), 36891 states have internal predecessors, (44951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36892 states to 36892 states and 44951 transitions. [2022-01-11 01:14:14,107 INFO L78 Accepts]: Start accepts. Automaton has 36892 states and 44951 transitions. Word has length 158 [2022-01-11 01:14:14,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:14,107 INFO L470 AbstractCegarLoop]: Abstraction has 36892 states and 44951 transitions. [2022-01-11 01:14:14,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:14,107 INFO L276 IsEmpty]: Start isEmpty. Operand 36892 states and 44951 transitions. [2022-01-11 01:14:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:14:14,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:14,121 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:14:14,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 01:14:14,121 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:14,121 INFO L85 PathProgramCache]: Analyzing trace with hash 879108042, now seen corresponding path program 1 times [2022-01-11 01:14:14,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:14,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667773056] [2022-01-11 01:14:14,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:14,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:14,154 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 01:14:14,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:14,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667773056] [2022-01-11 01:14:14,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667773056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:14,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:14,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:14,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830580826] [2022-01-11 01:14:14,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:14,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:14,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:14,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:14,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:14,156 INFO L87 Difference]: Start difference. First operand 36892 states and 44951 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:15,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:15,766 INFO L93 Difference]: Finished difference Result 60124 states and 72706 transitions. [2022-01-11 01:14:15,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:15,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 158 [2022-01-11 01:14:15,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:15,816 INFO L225 Difference]: With dead ends: 60124 [2022-01-11 01:14:15,816 INFO L226 Difference]: Without dead ends: 38554 [2022-01-11 01:14:15,836 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 [2022-01-11 01:14:15,836 INFO L933 BasicCegarLoop]: 4557 mSDtfsCounter, 331 mSDsluCounter, 4293 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 8850 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:15,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 8850 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:15,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38554 states. [2022-01-11 01:14:17,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38554 to 36838. [2022-01-11 01:14:17,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36838 states, 36836 states have (on average 1.2035237267890107) internal successors, (44333), 36837 states have internal predecessors, (44333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36838 states to 36838 states and 44333 transitions. [2022-01-11 01:14:17,446 INFO L78 Accepts]: Start accepts. Automaton has 36838 states and 44333 transitions. Word has length 158 [2022-01-11 01:14:17,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:17,447 INFO L470 AbstractCegarLoop]: Abstraction has 36838 states and 44333 transitions. [2022-01-11 01:14:17,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:17,447 INFO L276 IsEmpty]: Start isEmpty. Operand 36838 states and 44333 transitions. [2022-01-11 01:14:17,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:14:17,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:17,459 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:14:17,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 01:14:17,459 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:17,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:17,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1949605532, now seen corresponding path program 1 times [2022-01-11 01:14:17,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:17,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518839081] [2022-01-11 01:14:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:17,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:14:17,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:17,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518839081] [2022-01-11 01:14:17,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518839081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:17,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:17,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:17,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020072110] [2022-01-11 01:14:17,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:17,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:17,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:17,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:17,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:17,494 INFO L87 Difference]: Start difference. First operand 36838 states and 44333 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:19,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:19,034 INFO L93 Difference]: Finished difference Result 61074 states and 72667 transitions. [2022-01-11 01:14:19,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:19,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-11 01:14:19,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:19,080 INFO L225 Difference]: With dead ends: 61074 [2022-01-11 01:14:19,081 INFO L226 Difference]: Without dead ends: 37008 [2022-01-11 01:14:19,095 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 [2022-01-11 01:14:19,096 INFO L933 BasicCegarLoop]: 4628 mSDtfsCounter, 305 mSDsluCounter, 4291 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 8919 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:19,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 8919 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:19,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37008 states. [2022-01-11 01:14:20,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37008 to 36838. [2022-01-11 01:14:20,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36838 states, 36836 states have (on average 1.1863665978933653) internal successors, (43701), 36837 states have internal predecessors, (43701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36838 states to 36838 states and 43701 transitions. [2022-01-11 01:14:20,628 INFO L78 Accepts]: Start accepts. Automaton has 36838 states and 43701 transitions. Word has length 158 [2022-01-11 01:14:20,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:20,628 INFO L470 AbstractCegarLoop]: Abstraction has 36838 states and 43701 transitions. [2022-01-11 01:14:20,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:20,628 INFO L276 IsEmpty]: Start isEmpty. Operand 36838 states and 43701 transitions. [2022-01-11 01:14:20,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 01:14:20,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:20,641 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:14:20,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 01:14:20,642 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:20,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:20,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1055862078, now seen corresponding path program 1 times [2022-01-11 01:14:20,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:20,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473351814] [2022-01-11 01:14:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:20,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:14:20,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:20,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473351814] [2022-01-11 01:14:20,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473351814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:20,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:20,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:20,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845119603] [2022-01-11 01:14:20,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:20,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:20,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:20,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:20,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:20,677 INFO L87 Difference]: Start difference. First operand 36838 states and 43701 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:21,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:21,905 INFO L93 Difference]: Finished difference Result 53312 states and 62747 transitions. [2022-01-11 01:14:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:21,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-01-11 01:14:21,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:21,950 INFO L225 Difference]: With dead ends: 53312 [2022-01-11 01:14:21,951 INFO L226 Difference]: Without dead ends: 27610 [2022-01-11 01:14:21,977 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 [2022-01-11 01:14:21,977 INFO L933 BasicCegarLoop]: 4614 mSDtfsCounter, 279 mSDsluCounter, 4277 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 8891 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:21,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 8891 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:21,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27610 states. [2022-01-11 01:14:23,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27610 to 27536. [2022-01-11 01:14:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27536 states, 27534 states have (on average 1.192162417374882) internal successors, (32825), 27535 states have internal predecessors, (32825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27536 states to 27536 states and 32825 transitions. [2022-01-11 01:14:23,205 INFO L78 Accepts]: Start accepts. Automaton has 27536 states and 32825 transitions. Word has length 159 [2022-01-11 01:14:23,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:23,206 INFO L470 AbstractCegarLoop]: Abstraction has 27536 states and 32825 transitions. [2022-01-11 01:14:23,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:23,206 INFO L276 IsEmpty]: Start isEmpty. Operand 27536 states and 32825 transitions. [2022-01-11 01:14:23,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 01:14:23,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:23,215 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:14:23,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 01:14:23,216 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:23,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:23,216 INFO L85 PathProgramCache]: Analyzing trace with hash 755364622, now seen corresponding path program 1 times [2022-01-11 01:14:23,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:23,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968678734] [2022-01-11 01:14:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:23,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:14:23,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:23,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968678734] [2022-01-11 01:14:23,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968678734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:23,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:23,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:23,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524019606] [2022-01-11 01:14:23,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:23,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:23,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:23,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:23,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:23,247 INFO L87 Difference]: Start difference. First operand 27536 states and 32825 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:24,557 INFO L93 Difference]: Finished difference Result 45260 states and 53059 transitions. [2022-01-11 01:14:24,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:24,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-01-11 01:14:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:24,590 INFO L225 Difference]: With dead ends: 45260 [2022-01-11 01:14:24,590 INFO L226 Difference]: Without dead ends: 27658 [2022-01-11 01:14:24,601 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 [2022-01-11 01:14:24,602 INFO L933 BasicCegarLoop]: 4616 mSDtfsCounter, 306 mSDsluCounter, 4282 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 8898 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:24,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 8898 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:24,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27658 states. [2022-01-11 01:14:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27658 to 27536. [2022-01-11 01:14:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27536 states, 27534 states have (on average 1.1754558001016924) internal successors, (32365), 27535 states have internal predecessors, (32365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27536 states to 27536 states and 32365 transitions. [2022-01-11 01:14:25,841 INFO L78 Accepts]: Start accepts. Automaton has 27536 states and 32365 transitions. Word has length 159 [2022-01-11 01:14:25,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:25,842 INFO L470 AbstractCegarLoop]: Abstraction has 27536 states and 32365 transitions. [2022-01-11 01:14:25,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 27536 states and 32365 transitions. [2022-01-11 01:14:25,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 01:14:25,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:25,851 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:14:25,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 01:14:25,851 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1302776373, now seen corresponding path program 1 times [2022-01-11 01:14:25,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:25,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034294688] [2022-01-11 01:14:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:25,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-11 01:14:25,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:25,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034294688] [2022-01-11 01:14:25,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034294688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:25,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:25,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:14:25,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966205031] [2022-01-11 01:14:25,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:25,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:14:25,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:25,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:14:25,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:14:25,903 INFO L87 Difference]: Start difference. First operand 27536 states and 32365 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:27,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:27,386 INFO L93 Difference]: Finished difference Result 49246 states and 56655 transitions. [2022-01-11 01:14:27,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:14:27,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 160 [2022-01-11 01:14:27,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:27,415 INFO L225 Difference]: With dead ends: 49246 [2022-01-11 01:14:27,415 INFO L226 Difference]: Without dead ends: 23854 [2022-01-11 01:14:27,432 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 [2022-01-11 01:14:27,433 INFO L933 BasicCegarLoop]: 4387 mSDtfsCounter, 1045 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 16800 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:27,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 16800 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:27,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23854 states. [2022-01-11 01:14:28,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23854 to 20764. [2022-01-11 01:14:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20764 states, 20762 states have (on average 1.1788363356131395) internal successors, (24475), 20763 states have internal predecessors, (24475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:28,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20764 states to 20764 states and 24475 transitions. [2022-01-11 01:14:28,524 INFO L78 Accepts]: Start accepts. Automaton has 20764 states and 24475 transitions. Word has length 160 [2022-01-11 01:14:28,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:28,524 INFO L470 AbstractCegarLoop]: Abstraction has 20764 states and 24475 transitions. [2022-01-11 01:14:28,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:28,524 INFO L276 IsEmpty]: Start isEmpty. Operand 20764 states and 24475 transitions. [2022-01-11 01:14:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 01:14:28,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:28,530 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:14:28,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 01:14:28,531 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:28,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1124602991, now seen corresponding path program 1 times [2022-01-11 01:14:28,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:28,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124866732] [2022-01-11 01:14:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:28,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-11 01:14:28,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:28,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124866732] [2022-01-11 01:14:28,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124866732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:28,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:28,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:14:28,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607949771] [2022-01-11 01:14:28,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:28,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:14:28,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:28,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:14:28,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:14:28,577 INFO L87 Difference]: Start difference. First operand 20764 states and 24475 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:29,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:29,729 INFO L93 Difference]: Finished difference Result 37508 states and 42876 transitions. [2022-01-11 01:14:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:14:29,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 160 [2022-01-11 01:14:29,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:29,756 INFO L225 Difference]: With dead ends: 37508 [2022-01-11 01:14:29,756 INFO L226 Difference]: Without dead ends: 18900 [2022-01-11 01:14:29,768 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 [2022-01-11 01:14:29,768 INFO L933 BasicCegarLoop]: 4333 mSDtfsCounter, 896 mSDsluCounter, 12471 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 16804 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:29,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 16804 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:29,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18900 states. [2022-01-11 01:14:30,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18900 to 17048. [2022-01-11 01:14:30,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17048 states, 17046 states have (on average 1.1793382611756424) internal successors, (20103), 17047 states have internal predecessors, (20103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:30,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17048 states to 17048 states and 20103 transitions. [2022-01-11 01:14:30,647 INFO L78 Accepts]: Start accepts. Automaton has 17048 states and 20103 transitions. Word has length 160 [2022-01-11 01:14:30,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:30,647 INFO L470 AbstractCegarLoop]: Abstraction has 17048 states and 20103 transitions. [2022-01-11 01:14:30,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 17048 states and 20103 transitions. [2022-01-11 01:14:30,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 01:14:30,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:30,651 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:14:30,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 01:14:30,651 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:30,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:30,652 INFO L85 PathProgramCache]: Analyzing trace with hash -325117326, now seen corresponding path program 1 times [2022-01-11 01:14:30,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:30,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255183338] [2022-01-11 01:14:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:30,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-11 01:14:30,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:30,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255183338] [2022-01-11 01:14:30,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255183338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:30,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:30,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:14:30,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262353204] [2022-01-11 01:14:30,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:30,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:14:30,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:30,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:14:30,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:14:30,713 INFO L87 Difference]: Start difference. First operand 17048 states and 20103 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:31,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:31,408 INFO L93 Difference]: Finished difference Result 23497 states and 27035 transitions. [2022-01-11 01:14:31,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:14:31,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 160 [2022-01-11 01:14:31,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:31,416 INFO L225 Difference]: With dead ends: 23497 [2022-01-11 01:14:31,416 INFO L226 Difference]: Without dead ends: 6077 [2022-01-11 01:14:31,426 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 [2022-01-11 01:14:31,427 INFO L933 BasicCegarLoop]: 4333 mSDtfsCounter, 770 mSDsluCounter, 12423 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 16756 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:31,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 16756 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:31,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6077 states. [2022-01-11 01:14:31,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6077 to 5939. [2022-01-11 01:14:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5939 states, 5937 states have (on average 1.3442816237156814) internal successors, (7981), 5938 states have internal predecessors, (7981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:31,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 7981 transitions. [2022-01-11 01:14:31,682 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 7981 transitions. Word has length 160 [2022-01-11 01:14:31,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:31,682 INFO L470 AbstractCegarLoop]: Abstraction has 5939 states and 7981 transitions. [2022-01-11 01:14:31,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:31,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 7981 transitions. [2022-01-11 01:14:31,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-01-11 01:14:31,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:31,686 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:14:31,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 01:14:31,686 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:31,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:31,687 INFO L85 PathProgramCache]: Analyzing trace with hash 224011255, now seen corresponding path program 1 times [2022-01-11 01:14:31,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:31,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21680735] [2022-01-11 01:14:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:31,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 01:14:31,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:31,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21680735] [2022-01-11 01:14:31,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21680735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:31,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:31,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 01:14:31,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74326396] [2022-01-11 01:14:31,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:31,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 01:14:31,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:31,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 01:14:31,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 01:14:31,920 INFO L87 Difference]: Start difference. First operand 5939 states and 7981 transitions. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:32,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:32,457 INFO L93 Difference]: Finished difference Result 5939 states and 7981 transitions. [2022-01-11 01:14:32,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:14:32,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 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 239 [2022-01-11 01:14:32,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:32,460 INFO L225 Difference]: With dead ends: 5939 [2022-01-11 01:14:32,460 INFO L226 Difference]: Without dead ends: 2123 [2022-01-11 01:14:32,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 01:14:32,466 INFO L933 BasicCegarLoop]: 4681 mSDtfsCounter, 4536 mSDsluCounter, 14034 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4536 SdHoareTripleChecker+Valid, 18715 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:32,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4536 Valid, 18715 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:32,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2022-01-11 01:14:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2123. [2022-01-11 01:14:32,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.8656927426955703) internal successors, (3959), 2122 states have internal predecessors, (3959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:32,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3959 transitions. [2022-01-11 01:14:32,484 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3959 transitions. Word has length 239 [2022-01-11 01:14:32,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:32,485 INFO L470 AbstractCegarLoop]: Abstraction has 2123 states and 3959 transitions. [2022-01-11 01:14:32,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:32,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3959 transitions. [2022-01-11 01:14:32,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1687 [2022-01-11 01:14:32,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:32,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:14:32,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 01:14:32,502 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:32,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:32,503 INFO L85 PathProgramCache]: Analyzing trace with hash -947356914, now seen corresponding path program 1 times [2022-01-11 01:14:32,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:32,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939694361] [2022-01-11 01:14:32,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:32,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat