/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:27:30,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:27:30,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:27:30,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:27:30,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:27:30,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:27:30,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:27:30,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:27:30,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:27:30,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:27:30,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:27:30,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:27:30,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:27:30,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:27:30,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:27:30,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:27:30,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:27:30,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:27:30,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:27:30,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:27:30,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:27:30,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:27:30,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:27:30,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:27:30,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:27:30,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:27:30,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:27:30,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:27:30,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:27:30,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:27:30,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:27:30,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:27:30,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:27:31,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:27:31,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:27:31,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:27:31,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:27:31,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:27:31,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:27:31,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:27:31,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:27:31,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:27:31,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:27:31,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:27:31,041 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:27:31,041 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:27:31,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:27:31,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:27:31,043 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:27:31,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:27:31,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:27:31,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:27:31,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:27:31,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:27:31,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:27:31,044 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:27:31,044 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:27:31,044 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:27:31,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:27:31,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:27:31,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:27:31,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:27:31,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:27:31,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:27:31,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:27:31,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:27:31,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:27:31,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:27:31,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:27:31,046 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:27:31,047 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:27:31,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:27:31,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:27:31,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:27:31,058 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:27:31,058 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:27:31,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:27:31,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:27:31,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:27:31,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:27:31,285 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:27:31,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.04.cil-2.c [2022-01-10 18:27:31,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b2206904/86f2f02dc0494105891d6a055cab8df0/FLAGa3b400a4b [2022-01-10 18:27:31,711 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:27:31,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.04.cil-2.c [2022-01-10 18:27:31,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b2206904/86f2f02dc0494105891d6a055cab8df0/FLAGa3b400a4b [2022-01-10 18:27:32,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b2206904/86f2f02dc0494105891d6a055cab8df0 [2022-01-10 18:27:32,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:27:32,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:27:32,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:27:32,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:27:32,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:27:32,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:27:32" (1/1) ... [2022-01-10 18:27:32,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782522fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:27:32, skipping insertion in model container [2022-01-10 18:27:32,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:27:32" (1/1) ... [2022-01-10 18:27:32,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:27:32,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:27:32,319 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.04.cil-2.c[671,684] [2022-01-10 18:27:32,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:27:32,398 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:27:32,407 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.04.cil-2.c[671,684] [2022-01-10 18:27:32,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:27:32,459 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:27:32,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:27:32 WrapperNode [2022-01-10 18:27:32,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:27:32,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:27:32,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:27:32,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:27:32,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:27:32" (1/1) ... [2022-01-10 18:27:32,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:27:32" (1/1) ... [2022-01-10 18:27:32,542 INFO L137 Inliner]: procedures = 36, calls = 44, calls flagged for inlining = 39, calls inlined = 78, statements flattened = 1074 [2022-01-10 18:27:32,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:27:32,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:27:32,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:27:32,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:27:32,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:27:32" (1/1) ... [2022-01-10 18:27:32,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:27:32" (1/1) ... [2022-01-10 18:27:32,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:27:32" (1/1) ... [2022-01-10 18:27:32,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:27:32" (1/1) ... [2022-01-10 18:27:32,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:27:32" (1/1) ... [2022-01-10 18:27:32,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:27:32" (1/1) ... [2022-01-10 18:27:32,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:27:32" (1/1) ... [2022-01-10 18:27:32,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:27:32,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:27:32,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:27:32,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:27:32,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:27:32" (1/1) ... [2022-01-10 18:27:32,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:27:32,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:27:32,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:27:32,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:27:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:27:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:27:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:27:32,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:27:32,859 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:27:32,861 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:27:33,655 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:27:33,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:27:33,665 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-01-10 18:27:33,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:27:33 BoogieIcfgContainer [2022-01-10 18:27:33,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:27:33,667 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:27:33,668 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:27:33,670 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:27:33,672 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:27:33" (1/1) ... [2022-01-10 18:27:33,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:27:33 BasicIcfg [2022-01-10 18:27:33,861 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:27:33,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:27:33,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:27:33,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:27:33,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:27:32" (1/4) ... [2022-01-10 18:27:33,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f266af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:27:33, skipping insertion in model container [2022-01-10 18:27:33,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:27:32" (2/4) ... [2022-01-10 18:27:33,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f266af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:27:33, skipping insertion in model container [2022-01-10 18:27:33,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:27:33" (3/4) ... [2022-01-10 18:27:33,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f266af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:27:33, skipping insertion in model container [2022-01-10 18:27:33,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:27:33" (4/4) ... [2022-01-10 18:27:33,868 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.04.cil-2.cTransformedIcfg [2022-01-10 18:27:33,872 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:27:33,872 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 18:27:33,929 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:27:33,937 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:27:33,937 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 18:27:33,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 440 states, 437 states have (on average 1.540045766590389) internal successors, (673), 439 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:33,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:27:33,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:33,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:33,975 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:33,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:33,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1539679110, now seen corresponding path program 1 times [2022-01-10 18:27:33,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:33,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374709058] [2022-01-10 18:27:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:33,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:34,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:34,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374709058] [2022-01-10 18:27:34,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374709058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:34,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:34,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:27:34,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339004545] [2022-01-10 18:27:34,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:34,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:34,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:34,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:34,328 INFO L87 Difference]: Start difference. First operand has 440 states, 437 states have (on average 1.540045766590389) internal successors, (673), 439 states have internal predecessors, (673), 0 states have call successors, (0), 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 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:34,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:34,493 INFO L93 Difference]: Finished difference Result 1201 states and 1838 transitions. [2022-01-10 18:27:34,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:34,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 18:27:34,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:34,516 INFO L225 Difference]: With dead ends: 1201 [2022-01-10 18:27:34,516 INFO L226 Difference]: Without dead ends: 764 [2022-01-10 18:27:34,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:34,524 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 587 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1190 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 [2022-01-10 18:27:34,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 1190 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:34,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-01-10 18:27:34,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 760. [2022-01-10 18:27:34,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.4986807387862797) internal successors, (1136), 759 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1136 transitions. [2022-01-10 18:27:34,639 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1136 transitions. Word has length 76 [2022-01-10 18:27:34,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:34,639 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1136 transitions. [2022-01-10 18:27:34,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:34,640 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1136 transitions. [2022-01-10 18:27:34,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:27:34,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:34,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:34,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:27:34,642 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:34,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:34,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1243969702, now seen corresponding path program 1 times [2022-01-10 18:27:34,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:34,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762104690] [2022-01-10 18:27:34,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:34,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:34,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:34,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762104690] [2022-01-10 18:27:34,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762104690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:34,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:34,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:27:34,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253906688] [2022-01-10 18:27:34,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:34,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:34,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:34,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:34,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:34,758 INFO L87 Difference]: Start difference. First operand 760 states and 1136 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:34,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:34,801 INFO L93 Difference]: Finished difference Result 1508 states and 2254 transitions. [2022-01-10 18:27:34,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:34,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 18:27:34,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:34,805 INFO L225 Difference]: With dead ends: 1508 [2022-01-10 18:27:34,805 INFO L226 Difference]: Without dead ends: 760 [2022-01-10 18:27:34,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:34,815 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 633 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 639 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 [2022-01-10 18:27:34,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 639 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-10 18:27:34,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-10 18:27:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.4881266490765173) internal successors, (1128), 759 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1128 transitions. [2022-01-10 18:27:34,854 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1128 transitions. Word has length 76 [2022-01-10 18:27:34,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:34,855 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1128 transitions. [2022-01-10 18:27:34,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:34,855 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1128 transitions. [2022-01-10 18:27:34,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:27:34,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:34,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:34,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:27:34,866 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:34,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:34,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1813610618, now seen corresponding path program 1 times [2022-01-10 18:27:34,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:34,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126208413] [2022-01-10 18:27:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:34,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:34,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:34,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:34,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126208413] [2022-01-10 18:27:34,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126208413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:34,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:34,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:27:34,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954849623] [2022-01-10 18:27:34,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:34,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:34,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:34,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:34,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:34,955 INFO L87 Difference]: Start difference. First operand 760 states and 1128 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:34,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:34,993 INFO L93 Difference]: Finished difference Result 1507 states and 2237 transitions. [2022-01-10 18:27:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:34,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 18:27:34,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:34,997 INFO L225 Difference]: With dead ends: 1507 [2022-01-10 18:27:34,997 INFO L226 Difference]: Without dead ends: 760 [2022-01-10 18:27:35,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:35,004 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 627 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 634 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 [2022-01-10 18:27:35,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 634 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:35,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-10 18:27:35,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-10 18:27:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.4775725593667546) internal successors, (1120), 759 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1120 transitions. [2022-01-10 18:27:35,033 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1120 transitions. Word has length 76 [2022-01-10 18:27:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:35,035 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1120 transitions. [2022-01-10 18:27:35,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1120 transitions. [2022-01-10 18:27:35,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:27:35,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:35,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:35,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:27:35,038 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:35,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:35,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1551441062, now seen corresponding path program 1 times [2022-01-10 18:27:35,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:35,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392806435] [2022-01-10 18:27:35,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:35,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:35,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:35,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:35,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392806435] [2022-01-10 18:27:35,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392806435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:35,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:35,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:27:35,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159009528] [2022-01-10 18:27:35,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:35,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:35,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:35,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:35,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:35,103 INFO L87 Difference]: Start difference. First operand 760 states and 1120 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:35,147 INFO L93 Difference]: Finished difference Result 1506 states and 2220 transitions. [2022-01-10 18:27:35,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:35,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 18:27:35,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:35,151 INFO L225 Difference]: With dead ends: 1506 [2022-01-10 18:27:35,151 INFO L226 Difference]: Without dead ends: 760 [2022-01-10 18:27:35,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:35,158 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 621 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 629 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 [2022-01-10 18:27:35,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 629 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:35,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-10 18:27:35,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-10 18:27:35,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.4670184696569921) internal successors, (1112), 759 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1112 transitions. [2022-01-10 18:27:35,192 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1112 transitions. Word has length 76 [2022-01-10 18:27:35,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:35,193 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1112 transitions. [2022-01-10 18:27:35,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,193 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1112 transitions. [2022-01-10 18:27:35,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:27:35,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:35,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:35,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:27:35,195 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:35,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:35,195 INFO L85 PathProgramCache]: Analyzing trace with hash -695313530, now seen corresponding path program 1 times [2022-01-10 18:27:35,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:35,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129414345] [2022-01-10 18:27:35,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:35,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:35,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:35,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129414345] [2022-01-10 18:27:35,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129414345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:35,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:35,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:27:35,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869361864] [2022-01-10 18:27:35,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:35,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:35,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:35,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:35,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:35,254 INFO L87 Difference]: Start difference. First operand 760 states and 1112 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:35,328 INFO L93 Difference]: Finished difference Result 1505 states and 2203 transitions. [2022-01-10 18:27:35,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:35,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 18:27:35,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:35,331 INFO L225 Difference]: With dead ends: 1505 [2022-01-10 18:27:35,331 INFO L226 Difference]: Without dead ends: 760 [2022-01-10 18:27:35,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:35,333 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 615 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 624 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 [2022-01-10 18:27:35,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 624 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:35,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-10 18:27:35,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-10 18:27:35,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.4564643799472297) internal successors, (1104), 759 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1104 transitions. [2022-01-10 18:27:35,367 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1104 transitions. Word has length 76 [2022-01-10 18:27:35,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:35,368 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1104 transitions. [2022-01-10 18:27:35,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,371 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1104 transitions. [2022-01-10 18:27:35,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:27:35,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:35,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:35,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:27:35,378 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:35,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:35,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2003157158, now seen corresponding path program 1 times [2022-01-10 18:27:35,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:35,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448764573] [2022-01-10 18:27:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:35,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:35,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:35,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448764573] [2022-01-10 18:27:35,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448764573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:35,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:35,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:27:35,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068709914] [2022-01-10 18:27:35,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:35,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:35,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:35,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:35,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:35,435 INFO L87 Difference]: Start difference. First operand 760 states and 1104 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:35,499 INFO L93 Difference]: Finished difference Result 1504 states and 2186 transitions. [2022-01-10 18:27:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:35,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 18:27:35,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:35,503 INFO L225 Difference]: With dead ends: 1504 [2022-01-10 18:27:35,503 INFO L226 Difference]: Without dead ends: 760 [2022-01-10 18:27:35,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:35,506 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 550 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:27:35,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 653 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:35,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-10 18:27:35,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-10 18:27:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.4300791556728232) internal successors, (1084), 759 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1084 transitions. [2022-01-10 18:27:35,558 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1084 transitions. Word has length 76 [2022-01-10 18:27:35,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:35,558 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1084 transitions. [2022-01-10 18:27:35,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,558 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1084 transitions. [2022-01-10 18:27:35,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:27:35,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:35,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:35,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:27:35,559 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:35,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:35,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1997048325, now seen corresponding path program 1 times [2022-01-10 18:27:35,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:35,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196431058] [2022-01-10 18:27:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:35,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:35,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:35,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196431058] [2022-01-10 18:27:35,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196431058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:35,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:35,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:27:35,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956214648] [2022-01-10 18:27:35,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:35,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:35,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:35,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:35,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:35,613 INFO L87 Difference]: Start difference. First operand 760 states and 1084 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:35,679 INFO L93 Difference]: Finished difference Result 1502 states and 2143 transitions. [2022-01-10 18:27:35,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:35,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 18:27:35,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:35,683 INFO L225 Difference]: With dead ends: 1502 [2022-01-10 18:27:35,683 INFO L226 Difference]: Without dead ends: 760 [2022-01-10 18:27:35,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:35,685 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 537 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:27:35,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 640 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:35,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-10 18:27:35,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-10 18:27:35,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.403693931398417) internal successors, (1064), 759 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1064 transitions. [2022-01-10 18:27:35,720 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1064 transitions. Word has length 76 [2022-01-10 18:27:35,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:35,720 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1064 transitions. [2022-01-10 18:27:35,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,721 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1064 transitions. [2022-01-10 18:27:35,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:27:35,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:35,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:35,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:27:35,722 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:35,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:35,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1079775716, now seen corresponding path program 1 times [2022-01-10 18:27:35,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:35,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856403862] [2022-01-10 18:27:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:35,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:35,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:35,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856403862] [2022-01-10 18:27:35,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856403862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:35,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:35,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:27:35,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69227906] [2022-01-10 18:27:35,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:35,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:35,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:35,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:35,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:35,761 INFO L87 Difference]: Start difference. First operand 760 states and 1064 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:35,836 INFO L93 Difference]: Finished difference Result 1501 states and 2102 transitions. [2022-01-10 18:27:35,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:35,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 18:27:35,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:35,840 INFO L225 Difference]: With dead ends: 1501 [2022-01-10 18:27:35,840 INFO L226 Difference]: Without dead ends: 760 [2022-01-10 18:27:35,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:35,842 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 525 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:27:35,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 627 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:35,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-10 18:27:35,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-10 18:27:35,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.3773087071240107) internal successors, (1044), 759 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1044 transitions. [2022-01-10 18:27:35,876 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1044 transitions. Word has length 76 [2022-01-10 18:27:35,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:35,876 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1044 transitions. [2022-01-10 18:27:35,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,877 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1044 transitions. [2022-01-10 18:27:35,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:27:35,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:35,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:35,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:27:35,878 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:35,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:35,878 INFO L85 PathProgramCache]: Analyzing trace with hash 437865283, now seen corresponding path program 1 times [2022-01-10 18:27:35,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:35,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164214375] [2022-01-10 18:27:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:35,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:35,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:35,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164214375] [2022-01-10 18:27:35,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164214375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:35,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:35,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:27:35,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538057247] [2022-01-10 18:27:35,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:35,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:35,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:35,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:35,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:35,912 INFO L87 Difference]: Start difference. First operand 760 states and 1044 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:35,973 INFO L93 Difference]: Finished difference Result 1500 states and 2061 transitions. [2022-01-10 18:27:35,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:35,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 18:27:35,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:35,977 INFO L225 Difference]: With dead ends: 1500 [2022-01-10 18:27:35,977 INFO L226 Difference]: Without dead ends: 760 [2022-01-10 18:27:35,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:35,980 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 513 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:27:35,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 614 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:35,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-10 18:27:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-10 18:27:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.3509234828496042) internal successors, (1024), 759 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1024 transitions. [2022-01-10 18:27:36,014 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1024 transitions. Word has length 76 [2022-01-10 18:27:36,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:36,015 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1024 transitions. [2022-01-10 18:27:36,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1024 transitions. [2022-01-10 18:27:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:27:36,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:36,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:36,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:27:36,016 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:36,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:36,017 INFO L85 PathProgramCache]: Analyzing trace with hash 931221922, now seen corresponding path program 1 times [2022-01-10 18:27:36,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:36,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258479090] [2022-01-10 18:27:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:36,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:36,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:36,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258479090] [2022-01-10 18:27:36,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258479090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:36,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:36,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:27:36,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937551340] [2022-01-10 18:27:36,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:36,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:36,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:36,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:36,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:36,058 INFO L87 Difference]: Start difference. First operand 760 states and 1024 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:36,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:36,145 INFO L93 Difference]: Finished difference Result 2094 states and 2821 transitions. [2022-01-10 18:27:36,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:36,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 18:27:36,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:36,151 INFO L225 Difference]: With dead ends: 2094 [2022-01-10 18:27:36,151 INFO L226 Difference]: Without dead ends: 1363 [2022-01-10 18:27:36,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:36,153 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 479 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:27:36,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 1047 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-01-10 18:27:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1355. [2022-01-10 18:27:36,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1353 states have (on average 1.3414634146341464) internal successors, (1815), 1354 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 1815 transitions. [2022-01-10 18:27:36,238 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 1815 transitions. Word has length 76 [2022-01-10 18:27:36,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:36,239 INFO L470 AbstractCegarLoop]: Abstraction has 1355 states and 1815 transitions. [2022-01-10 18:27:36,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:36,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 1815 transitions. [2022-01-10 18:27:36,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:27:36,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:36,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:36,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:27:36,240 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:36,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:36,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1432342687, now seen corresponding path program 1 times [2022-01-10 18:27:36,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:36,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451619087] [2022-01-10 18:27:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:36,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:36,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:36,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:36,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451619087] [2022-01-10 18:27:36,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451619087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:36,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:36,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:27:36,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029348660] [2022-01-10 18:27:36,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:36,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:27:36,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:36,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:27:36,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:27:36,296 INFO L87 Difference]: Start difference. First operand 1355 states and 1815 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:36,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:36,552 INFO L93 Difference]: Finished difference Result 3855 states and 5165 transitions. [2022-01-10 18:27:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:27:36,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 18:27:36,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:36,565 INFO L225 Difference]: With dead ends: 3855 [2022-01-10 18:27:36,565 INFO L226 Difference]: Without dead ends: 2533 [2022-01-10 18:27:36,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:27:36,569 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 1713 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:27:36,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1713 Valid, 2785 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:27:36,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2022-01-10 18:27:36,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 1394. [2022-01-10 18:27:36,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1392 states have (on average 1.3232758620689655) internal successors, (1842), 1393 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:36,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1842 transitions. [2022-01-10 18:27:36,690 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1842 transitions. Word has length 76 [2022-01-10 18:27:36,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:36,690 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 1842 transitions. [2022-01-10 18:27:36,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:36,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1842 transitions. [2022-01-10 18:27:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:27:36,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:36,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:36,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:27:36,692 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:36,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:36,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1161884130, now seen corresponding path program 1 times [2022-01-10 18:27:36,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:36,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467259586] [2022-01-10 18:27:36,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:36,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:36,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:36,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467259586] [2022-01-10 18:27:36,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467259586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:36,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:36,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:27:36,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488245310] [2022-01-10 18:27:36,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:36,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:36,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:36,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:36,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:36,751 INFO L87 Difference]: Start difference. First operand 1394 states and 1842 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:36,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:36,879 INFO L93 Difference]: Finished difference Result 2738 states and 3617 transitions. [2022-01-10 18:27:36,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:36,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 18:27:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:36,886 INFO L225 Difference]: With dead ends: 2738 [2022-01-10 18:27:36,886 INFO L226 Difference]: Without dead ends: 1361 [2022-01-10 18:27:36,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:36,889 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 455 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 593 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 [2022-01-10 18:27:36,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 593 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:36,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-01-10 18:27:36,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2022-01-10 18:27:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1359 states have (on average 1.304635761589404) internal successors, (1773), 1360 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1773 transitions. [2022-01-10 18:27:36,973 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1773 transitions. Word has length 76 [2022-01-10 18:27:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:36,974 INFO L470 AbstractCegarLoop]: Abstraction has 1361 states and 1773 transitions. [2022-01-10 18:27:36,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1773 transitions. [2022-01-10 18:27:36,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:27:36,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:36,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:36,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:27:36,975 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:36,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:36,977 INFO L85 PathProgramCache]: Analyzing trace with hash 317412259, now seen corresponding path program 1 times [2022-01-10 18:27:36,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:36,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352335063] [2022-01-10 18:27:36,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:36,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:37,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:37,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352335063] [2022-01-10 18:27:37,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352335063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:37,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:37,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:27:37,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816063785] [2022-01-10 18:27:37,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:37,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:37,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:37,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:37,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:37,040 INFO L87 Difference]: Start difference. First operand 1361 states and 1773 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:37,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:37,222 INFO L93 Difference]: Finished difference Result 3934 states and 5121 transitions. [2022-01-10 18:27:37,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:37,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 18:27:37,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:37,231 INFO L225 Difference]: With dead ends: 3934 [2022-01-10 18:27:37,232 INFO L226 Difference]: Without dead ends: 2595 [2022-01-10 18:27:37,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:37,235 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 452 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:27:37,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 1011 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:37,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2022-01-10 18:27:37,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2455. [2022-01-10 18:27:37,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2453 states have (on average 1.2935181410517733) internal successors, (3173), 2454 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3173 transitions. [2022-01-10 18:27:37,383 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3173 transitions. Word has length 76 [2022-01-10 18:27:37,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:37,383 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 3173 transitions. [2022-01-10 18:27:37,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:37,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3173 transitions. [2022-01-10 18:27:37,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 18:27:37,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:37,386 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] [2022-01-10 18:27:37,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:27:37,386 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:37,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:37,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1903043490, now seen corresponding path program 1 times [2022-01-10 18:27:37,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:37,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293603766] [2022-01-10 18:27:37,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:37,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:37,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:37,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:37,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293603766] [2022-01-10 18:27:37,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293603766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:37,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:37,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:27:37,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040746369] [2022-01-10 18:27:37,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:37,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:37,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:37,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:37,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:37,456 INFO L87 Difference]: Start difference. First operand 2455 states and 3173 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:37,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:37,742 INFO L93 Difference]: Finished difference Result 7044 states and 9058 transitions. [2022-01-10 18:27:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:37,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-01-10 18:27:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:37,760 INFO L225 Difference]: With dead ends: 7044 [2022-01-10 18:27:37,760 INFO L226 Difference]: Without dead ends: 4654 [2022-01-10 18:27:37,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:37,766 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 376 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1297 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 [2022-01-10 18:27:37,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 1297 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:37,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4654 states. [2022-01-10 18:27:38,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4654 to 4650. [2022-01-10 18:27:38,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4650 states, 4648 states have (on average 1.2753872633390706) internal successors, (5928), 4649 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:38,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4650 states to 4650 states and 5928 transitions. [2022-01-10 18:27:38,054 INFO L78 Accepts]: Start accepts. Automaton has 4650 states and 5928 transitions. Word has length 123 [2022-01-10 18:27:38,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:38,054 INFO L470 AbstractCegarLoop]: Abstraction has 4650 states and 5928 transitions. [2022-01-10 18:27:38,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4650 states and 5928 transitions. [2022-01-10 18:27:38,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 18:27:38,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:38,057 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] [2022-01-10 18:27:38,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:27:38,058 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:38,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:38,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1165678015, now seen corresponding path program 1 times [2022-01-10 18:27:38,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:38,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688637669] [2022-01-10 18:27:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:38,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 18:27:38,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:38,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688637669] [2022-01-10 18:27:38,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688637669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:38,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:38,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:27:38,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431278192] [2022-01-10 18:27:38,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:38,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:38,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:38,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:38,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:38,086 INFO L87 Difference]: Start difference. First operand 4650 states and 5928 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:38,350 INFO L93 Difference]: Finished difference Result 8085 states and 10304 transitions. [2022-01-10 18:27:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:38,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 123 [2022-01-10 18:27:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:38,363 INFO L225 Difference]: With dead ends: 8085 [2022-01-10 18:27:38,363 INFO L226 Difference]: Without dead ends: 3500 [2022-01-10 18:27:38,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:38,373 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 552 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 556 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 [2022-01-10 18:27:38,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 556 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:38,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2022-01-10 18:27:38,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 3500. [2022-01-10 18:27:38,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3500 states, 3498 states have (on average 1.2727272727272727) internal successors, (4452), 3499 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:38,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3500 states to 3500 states and 4452 transitions. [2022-01-10 18:27:38,615 INFO L78 Accepts]: Start accepts. Automaton has 3500 states and 4452 transitions. Word has length 123 [2022-01-10 18:27:38,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:38,615 INFO L470 AbstractCegarLoop]: Abstraction has 3500 states and 4452 transitions. [2022-01-10 18:27:38,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:38,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3500 states and 4452 transitions. [2022-01-10 18:27:38,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 18:27:38,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:38,618 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] [2022-01-10 18:27:38,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:27:38,618 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:38,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:38,619 INFO L85 PathProgramCache]: Analyzing trace with hash -424030836, now seen corresponding path program 1 times [2022-01-10 18:27:38,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:38,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454896682] [2022-01-10 18:27:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:38,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:38,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:38,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454896682] [2022-01-10 18:27:38,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454896682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:38,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:38,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:27:38,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817294910] [2022-01-10 18:27:38,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:38,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:38,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:38,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:38,664 INFO L87 Difference]: Start difference. First operand 3500 states and 4452 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:39,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:39,049 INFO L93 Difference]: Finished difference Result 10114 states and 12847 transitions. [2022-01-10 18:27:39,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:39,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-10 18:27:39,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:39,085 INFO L225 Difference]: With dead ends: 10114 [2022-01-10 18:27:39,085 INFO L226 Difference]: Without dead ends: 6679 [2022-01-10 18:27:39,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:39,095 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 480 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1219 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 [2022-01-10 18:27:39,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 1219 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:39,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6679 states. [2022-01-10 18:27:39,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6679 to 6459. [2022-01-10 18:27:39,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6459 states, 6457 states have (on average 1.2651386092612669) internal successors, (8169), 6458 states have internal predecessors, (8169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:39,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6459 states to 6459 states and 8169 transitions. [2022-01-10 18:27:39,504 INFO L78 Accepts]: Start accepts. Automaton has 6459 states and 8169 transitions. Word has length 124 [2022-01-10 18:27:39,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:39,504 INFO L470 AbstractCegarLoop]: Abstraction has 6459 states and 8169 transitions. [2022-01-10 18:27:39,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:39,505 INFO L276 IsEmpty]: Start isEmpty. Operand 6459 states and 8169 transitions. [2022-01-10 18:27:39,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 18:27:39,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:39,509 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] [2022-01-10 18:27:39,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:27:39,509 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:39,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:39,510 INFO L85 PathProgramCache]: Analyzing trace with hash 472883565, now seen corresponding path program 1 times [2022-01-10 18:27:39,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:39,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038794638] [2022-01-10 18:27:39,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:39,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 18:27:39,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:39,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038794638] [2022-01-10 18:27:39,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038794638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:39,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:39,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:27:39,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353006870] [2022-01-10 18:27:39,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:39,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:39,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:39,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:39,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:39,542 INFO L87 Difference]: Start difference. First operand 6459 states and 8169 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:40,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:40,029 INFO L93 Difference]: Finished difference Result 12821 states and 16225 transitions. [2022-01-10 18:27:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:40,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 124 [2022-01-10 18:27:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:40,045 INFO L225 Difference]: With dead ends: 12821 [2022-01-10 18:27:40,046 INFO L226 Difference]: Without dead ends: 6401 [2022-01-10 18:27:40,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:40,058 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 550 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 555 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 [2022-01-10 18:27:40,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 555 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:40,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2022-01-10 18:27:40,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 6401. [2022-01-10 18:27:40,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6401 states, 6399 states have (on average 1.2659790592280045) internal successors, (8101), 6400 states have internal predecessors, (8101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:40,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6401 states to 6401 states and 8101 transitions. [2022-01-10 18:27:40,478 INFO L78 Accepts]: Start accepts. Automaton has 6401 states and 8101 transitions. Word has length 124 [2022-01-10 18:27:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:40,478 INFO L470 AbstractCegarLoop]: Abstraction has 6401 states and 8101 transitions. [2022-01-10 18:27:40,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 6401 states and 8101 transitions. [2022-01-10 18:27:40,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 18:27:40,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:40,482 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] [2022-01-10 18:27:40,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:27:40,482 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:40,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:40,483 INFO L85 PathProgramCache]: Analyzing trace with hash 697085325, now seen corresponding path program 1 times [2022-01-10 18:27:40,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:40,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759659329] [2022-01-10 18:27:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:40,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:40,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:40,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759659329] [2022-01-10 18:27:40,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759659329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:40,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:40,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:27:40,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907911227] [2022-01-10 18:27:40,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:40,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:40,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:40,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:40,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:40,534 INFO L87 Difference]: Start difference. First operand 6401 states and 8101 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:41,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:41,158 INFO L93 Difference]: Finished difference Result 18370 states and 23226 transitions. [2022-01-10 18:27:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:41,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-01-10 18:27:41,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:41,187 INFO L225 Difference]: With dead ends: 18370 [2022-01-10 18:27:41,187 INFO L226 Difference]: Without dead ends: 12034 [2022-01-10 18:27:41,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:41,202 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 480 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:27:41,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 1200 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:41,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12034 states. [2022-01-10 18:27:41,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12034 to 11766. [2022-01-10 18:27:41,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11766 states, 11764 states have (on average 1.2602856171370282) internal successors, (14826), 11765 states have internal predecessors, (14826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:41,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11766 states to 11766 states and 14826 transitions. [2022-01-10 18:27:41,847 INFO L78 Accepts]: Start accepts. Automaton has 11766 states and 14826 transitions. Word has length 125 [2022-01-10 18:27:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:41,847 INFO L470 AbstractCegarLoop]: Abstraction has 11766 states and 14826 transitions. [2022-01-10 18:27:41,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:41,847 INFO L276 IsEmpty]: Start isEmpty. Operand 11766 states and 14826 transitions. [2022-01-10 18:27:41,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 18:27:41,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:41,854 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] [2022-01-10 18:27:41,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:27:41,854 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:41,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:41,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1842993750, now seen corresponding path program 1 times [2022-01-10 18:27:41,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:41,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255977942] [2022-01-10 18:27:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:41,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 18:27:41,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:41,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255977942] [2022-01-10 18:27:41,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255977942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:41,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:41,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:27:41,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965301557] [2022-01-10 18:27:41,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:41,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:41,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:41,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:41,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:41,907 INFO L87 Difference]: Start difference. First operand 11766 states and 14826 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:42,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:42,615 INFO L93 Difference]: Finished difference Result 23429 states and 29533 transitions. [2022-01-10 18:27:42,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:42,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 125 [2022-01-10 18:27:42,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:42,642 INFO L225 Difference]: With dead ends: 23429 [2022-01-10 18:27:42,642 INFO L226 Difference]: Without dead ends: 11709 [2022-01-10 18:27:42,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:42,658 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 548 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 554 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 [2022-01-10 18:27:42,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 554 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:42,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11709 states. [2022-01-10 18:27:43,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11709 to 11709. [2022-01-10 18:27:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11709 states, 11707 states have (on average 1.260784146237294) internal successors, (14760), 11708 states have internal predecessors, (14760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:43,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11709 states to 11709 states and 14760 transitions. [2022-01-10 18:27:43,257 INFO L78 Accepts]: Start accepts. Automaton has 11709 states and 14760 transitions. Word has length 125 [2022-01-10 18:27:43,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:43,258 INFO L470 AbstractCegarLoop]: Abstraction has 11709 states and 14760 transitions. [2022-01-10 18:27:43,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:43,258 INFO L276 IsEmpty]: Start isEmpty. Operand 11709 states and 14760 transitions. [2022-01-10 18:27:43,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 18:27:43,263 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:43,263 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] [2022-01-10 18:27:43,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:27:43,264 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:43,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:43,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1199446499, now seen corresponding path program 1 times [2022-01-10 18:27:43,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:43,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119122512] [2022-01-10 18:27:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:43,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:43,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:43,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119122512] [2022-01-10 18:27:43,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119122512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:43,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:43,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:27:43,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967595685] [2022-01-10 18:27:43,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:43,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:43,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:43,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:43,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:43,312 INFO L87 Difference]: Start difference. First operand 11709 states and 14760 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:44,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:44,229 INFO L93 Difference]: Finished difference Result 33221 states and 41803 transitions. [2022-01-10 18:27:44,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:44,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-01-10 18:27:44,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:44,279 INFO L225 Difference]: With dead ends: 33221 [2022-01-10 18:27:44,280 INFO L226 Difference]: Without dead ends: 21577 [2022-01-10 18:27:44,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:44,304 INFO L933 BasicCegarLoop]: 637 mSDtfsCounter, 425 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:27:44,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 1162 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21577 states. [2022-01-10 18:27:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21577 to 21381. [2022-01-10 18:27:45,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21381 states, 21379 states have (on average 1.2565134010009822) internal successors, (26863), 21380 states have internal predecessors, (26863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21381 states to 21381 states and 26863 transitions. [2022-01-10 18:27:45,485 INFO L78 Accepts]: Start accepts. Automaton has 21381 states and 26863 transitions. Word has length 126 [2022-01-10 18:27:45,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:45,485 INFO L470 AbstractCegarLoop]: Abstraction has 21381 states and 26863 transitions. [2022-01-10 18:27:45,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:45,486 INFO L276 IsEmpty]: Start isEmpty. Operand 21381 states and 26863 transitions. [2022-01-10 18:27:45,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 18:27:45,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:45,496 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] [2022-01-10 18:27:45,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:27:45,497 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:45,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:45,497 INFO L85 PathProgramCache]: Analyzing trace with hash 40332093, now seen corresponding path program 1 times [2022-01-10 18:27:45,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:45,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231035545] [2022-01-10 18:27:45,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:45,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 18:27:45,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:45,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231035545] [2022-01-10 18:27:45,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231035545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:45,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:45,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:27:45,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824843240] [2022-01-10 18:27:45,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:45,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:45,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:45,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:45,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:45,532 INFO L87 Difference]: Start difference. First operand 21381 states and 26863 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:46,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:46,533 INFO L93 Difference]: Finished difference Result 42653 states and 53601 transitions. [2022-01-10 18:27:46,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:46,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 126 [2022-01-10 18:27:46,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:46,575 INFO L225 Difference]: With dead ends: 42653 [2022-01-10 18:27:46,575 INFO L226 Difference]: Without dead ends: 21325 [2022-01-10 18:27:46,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:46,613 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 546 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 553 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 [2022-01-10 18:27:46,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 553 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:46,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21325 states. [2022-01-10 18:27:47,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21325 to 21325. [2022-01-10 18:27:47,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21325 states, 21323 states have (on average 1.2568118932607981) internal successors, (26799), 21324 states have internal predecessors, (26799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:47,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21325 states to 21325 states and 26799 transitions. [2022-01-10 18:27:47,674 INFO L78 Accepts]: Start accepts. Automaton has 21325 states and 26799 transitions. Word has length 126 [2022-01-10 18:27:47,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:47,674 INFO L470 AbstractCegarLoop]: Abstraction has 21325 states and 26799 transitions. [2022-01-10 18:27:47,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:47,674 INFO L276 IsEmpty]: Start isEmpty. Operand 21325 states and 26799 transitions. [2022-01-10 18:27:47,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 18:27:47,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:47,684 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] [2022-01-10 18:27:47,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:27:47,685 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:47,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:47,685 INFO L85 PathProgramCache]: Analyzing trace with hash -433490559, now seen corresponding path program 1 times [2022-01-10 18:27:47,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:47,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090957693] [2022-01-10 18:27:47,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:47,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:47,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:47,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:47,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090957693] [2022-01-10 18:27:47,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090957693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:47,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:47,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:27:47,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742216262] [2022-01-10 18:27:47,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:47,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:47,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:47,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:47,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:47,737 INFO L87 Difference]: Start difference. First operand 21325 states and 26799 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:49,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:49,346 INFO L93 Difference]: Finished difference Result 61277 states and 76732 transitions. [2022-01-10 18:27:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:49,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-01-10 18:27:49,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:49,424 INFO L225 Difference]: With dead ends: 61277 [2022-01-10 18:27:49,424 INFO L226 Difference]: Without dead ends: 40017 [2022-01-10 18:27:49,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:49,470 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 457 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:27:49,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 1545 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:49,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40017 states. [2022-01-10 18:27:51,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40017 to 40017. [2022-01-10 18:27:51,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40017 states, 40015 states have (on average 1.2400849681369486) internal successors, (49622), 40016 states have internal predecessors, (49622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40017 states to 40017 states and 49622 transitions. [2022-01-10 18:27:51,883 INFO L78 Accepts]: Start accepts. Automaton has 40017 states and 49622 transitions. Word has length 127 [2022-01-10 18:27:51,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:51,883 INFO L470 AbstractCegarLoop]: Abstraction has 40017 states and 49622 transitions. [2022-01-10 18:27:51,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:51,883 INFO L276 IsEmpty]: Start isEmpty. Operand 40017 states and 49622 transitions. [2022-01-10 18:27:51,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 18:27:51,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:51,918 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:51,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 18:27:51,918 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:51,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:51,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1627617292, now seen corresponding path program 1 times [2022-01-10 18:27:51,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:51,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119776812] [2022-01-10 18:27:51,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:51,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:51,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:51,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119776812] [2022-01-10 18:27:51,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119776812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:51,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:51,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:27:51,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797444656] [2022-01-10 18:27:51,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:51,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:51,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:51,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:51,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:51,966 INFO L87 Difference]: Start difference. First operand 40017 states and 49622 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:54,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:54,471 INFO L93 Difference]: Finished difference Result 97909 states and 121352 transitions. [2022-01-10 18:27:54,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:54,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2022-01-10 18:27:54,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:54,564 INFO L225 Difference]: With dead ends: 97909 [2022-01-10 18:27:54,564 INFO L226 Difference]: Without dead ends: 57955 [2022-01-10 18:27:54,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:54,612 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 360 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:27:54,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 1006 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:27:54,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57955 states. [2022-01-10 18:27:57,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57955 to 57759. [2022-01-10 18:27:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57759 states, 57757 states have (on average 1.232924147722354) internal successors, (71210), 57758 states have internal predecessors, (71210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57759 states to 57759 states and 71210 transitions. [2022-01-10 18:27:57,638 INFO L78 Accepts]: Start accepts. Automaton has 57759 states and 71210 transitions. Word has length 164 [2022-01-10 18:27:57,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:57,638 INFO L470 AbstractCegarLoop]: Abstraction has 57759 states and 71210 transitions. [2022-01-10 18:27:57,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:27:57,639 INFO L276 IsEmpty]: Start isEmpty. Operand 57759 states and 71210 transitions. [2022-01-10 18:27:57,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 18:27:57,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:57,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:27:57,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 18:27:57,677 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:27:57,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:57,677 INFO L85 PathProgramCache]: Analyzing trace with hash 225869385, now seen corresponding path program 1 times [2022-01-10 18:27:57,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:57,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080266226] [2022-01-10 18:27:57,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:57,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:27:57,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:57,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080266226] [2022-01-10 18:27:57,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080266226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:57,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:57,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:27:57,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743799494] [2022-01-10 18:27:57,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:57,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:57,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:57,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:57,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:57,731 INFO L87 Difference]: Start difference. First operand 57759 states and 71210 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:01,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:01,945 INFO L93 Difference]: Finished difference Result 141381 states and 174274 transitions. [2022-01-10 18:28:01,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:01,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2022-01-10 18:28:01,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:02,084 INFO L225 Difference]: With dead ends: 141381 [2022-01-10 18:28:02,084 INFO L226 Difference]: Without dead ends: 83697 [2022-01-10 18:28:02,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:02,133 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 362 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:02,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 1004 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:02,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83697 states. [2022-01-10 18:28:06,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83697 to 83405. [2022-01-10 18:28:06,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83405 states, 83403 states have (on average 1.2264546838842727) internal successors, (102290), 83404 states have internal predecessors, (102290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:06,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83405 states to 83405 states and 102290 transitions. [2022-01-10 18:28:06,578 INFO L78 Accepts]: Start accepts. Automaton has 83405 states and 102290 transitions. Word has length 164 [2022-01-10 18:28:06,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:06,579 INFO L470 AbstractCegarLoop]: Abstraction has 83405 states and 102290 transitions. [2022-01-10 18:28:06,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:06,579 INFO L276 IsEmpty]: Start isEmpty. Operand 83405 states and 102290 transitions. [2022-01-10 18:28:06,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 18:28:06,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:06,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:06,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 18:28:06,638 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:06,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:06,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1503832319, now seen corresponding path program 1 times [2022-01-10 18:28:06,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:06,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896119410] [2022-01-10 18:28:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:06,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:06,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:06,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896119410] [2022-01-10 18:28:06,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896119410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:06,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:06,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:06,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428398314] [2022-01-10 18:28:06,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:06,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:06,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:06,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:06,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:06,691 INFO L87 Difference]: Start difference. First operand 83405 states and 102290 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:12,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:12,216 INFO L93 Difference]: Finished difference Result 204153 states and 250402 transitions. [2022-01-10 18:28:12,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:12,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2022-01-10 18:28:12,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:12,435 INFO L225 Difference]: With dead ends: 204153 [2022-01-10 18:28:12,436 INFO L226 Difference]: Without dead ends: 120835 [2022-01-10 18:28:12,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:12,506 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 364 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:12,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 1002 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:12,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120835 states. [2022-01-10 18:28:18,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120835 to 120399. [2022-01-10 18:28:18,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120399 states, 120397 states have (on average 1.2206450326835385) internal successors, (146962), 120398 states have internal predecessors, (146962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120399 states to 120399 states and 146962 transitions. [2022-01-10 18:28:18,604 INFO L78 Accepts]: Start accepts. Automaton has 120399 states and 146962 transitions. Word has length 164 [2022-01-10 18:28:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:18,604 INFO L470 AbstractCegarLoop]: Abstraction has 120399 states and 146962 transitions. [2022-01-10 18:28:18,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:18,604 INFO L276 IsEmpty]: Start isEmpty. Operand 120399 states and 146962 transitions. [2022-01-10 18:28:18,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-10 18:28:18,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:18,698 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-01-10 18:28:18,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 18:28:18,698 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:18,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:18,699 INFO L85 PathProgramCache]: Analyzing trace with hash -823700682, now seen corresponding path program 1 times [2022-01-10 18:28:18,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:18,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73468568] [2022-01-10 18:28:18,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:18,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 18:28:18,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:18,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73468568] [2022-01-10 18:28:18,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73468568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:18,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:18,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:28:18,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472047958] [2022-01-10 18:28:18,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:18,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:18,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:18,744 INFO L87 Difference]: Start difference. First operand 120399 states and 146962 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:24,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:24,663 INFO L93 Difference]: Finished difference Result 216541 states and 265023 transitions. [2022-01-10 18:28:24,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:24,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 183 [2022-01-10 18:28:24,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:24,890 INFO L225 Difference]: With dead ends: 216541 [2022-01-10 18:28:24,890 INFO L226 Difference]: Without dead ends: 123927 [2022-01-10 18:28:24,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:24,988 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 414 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:24,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 1078 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:28:25,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123927 states. [2022-01-10 18:28:30,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123927 to 118959. [2022-01-10 18:28:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118959 states, 118957 states have (on average 1.2083862235933993) internal successors, (143746), 118958 states have internal predecessors, (143746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118959 states to 118959 states and 143746 transitions. [2022-01-10 18:28:31,120 INFO L78 Accepts]: Start accepts. Automaton has 118959 states and 143746 transitions. Word has length 183 [2022-01-10 18:28:31,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:31,121 INFO L470 AbstractCegarLoop]: Abstraction has 118959 states and 143746 transitions. [2022-01-10 18:28:31,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:31,121 INFO L276 IsEmpty]: Start isEmpty. Operand 118959 states and 143746 transitions. [2022-01-10 18:28:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-10 18:28:31,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:31,202 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-01-10 18:28:31,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 18:28:31,202 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:31,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:31,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1498234030, now seen corresponding path program 1 times [2022-01-10 18:28:31,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:31,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518772397] [2022-01-10 18:28:31,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:31,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 18:28:31,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:31,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518772397] [2022-01-10 18:28:31,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518772397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:31,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:31,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:28:31,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341713295] [2022-01-10 18:28:31,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:31,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:31,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:31,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:31,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:31,246 INFO L87 Difference]: Start difference. First operand 118959 states and 143746 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)