/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:15:40,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:15:40,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:15:40,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:15:40,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:15:40,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:15:40,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:15:40,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:15:40,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:15:40,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:15:40,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:15:40,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:15:40,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:15:40,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:15:40,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:15:40,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:15:40,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:15:40,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:15:40,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:15:40,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:15:40,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:15:40,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:15:40,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:15:40,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:15:40,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 01:15:40,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 01:15:40,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 01:15:40,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 01:15:40,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 01:15:40,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 01:15:40,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 01:15:40,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 01:15:40,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 01:15:40,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 01:15:40,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 01:15:40,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 01:15:40,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 01:15:40,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 01:15:40,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:15:40,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:15:40,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:15:40,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 01:15:40,587 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:15:40,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:15:40,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:15:40,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:15:40,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:15:40,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:15:40,588 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:15:40,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:15:40,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:15:40,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:15:40,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:15:40,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:15:40,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:15:40,589 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:15:40,589 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:15:40,589 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:15:40,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:15:40,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:15:40,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:15:40,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:15:40,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:15:40,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:15:40,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:15:40,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:15:40,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:15:40,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:15:40,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:15:40,590 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:15:40,590 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:15:40,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:15:40,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:15:40,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:15:40,591 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:15:40,591 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:15:40,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:15:40,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:15:40,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:15:40,817 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:15:40,817 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:15:40,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.06.cil-2.c [2022-01-11 01:15:40,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b66882614/2f9e1d3691e144bd9f979170b8af22ce/FLAG6eb5ed21a [2022-01-11 01:15:41,629 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:15:41,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.06.cil-2.c [2022-01-11 01:15:41,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b66882614/2f9e1d3691e144bd9f979170b8af22ce/FLAG6eb5ed21a [2022-01-11 01:15:41,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b66882614/2f9e1d3691e144bd9f979170b8af22ce [2022-01-11 01:15:41,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:15:41,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:15:41,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:15:41,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:15:41,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:15:41,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:15:41" (1/1) ... [2022-01-11 01:15:41,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb9b455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:15:41, skipping insertion in model container [2022-01-11 01:15:41,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:15:41" (1/1) ... [2022-01-11 01:15:41,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:15:42,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:15:43,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.06.cil-2.c[377340,377353] [2022-01-11 01:15:43,439 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.06.cil-2.c[383339,383352] [2022-01-11 01:15:43,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:15:43,586 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:15:44,205 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.06.cil-2.c[377340,377353] [2022-01-11 01:15:44,218 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.06.cil-2.c[383339,383352] [2022-01-11 01:15:44,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:15:44,270 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:15:44,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:15:44 WrapperNode [2022-01-11 01:15:44,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:15:44,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:15:44,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:15:44,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:15:44,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:15:44" (1/1) ... [2022-01-11 01:15:44,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:15:44" (1/1) ... [2022-01-11 01:15:44,703 INFO L137 Inliner]: procedures = 57, calls = 59, calls flagged for inlining = 54, calls inlined = 123, statements flattened = 13985 [2022-01-11 01:15:44,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:15:44,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:15:44,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:15:44,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:15:44,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:15:44" (1/1) ... [2022-01-11 01:15:44,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:15:44" (1/1) ... [2022-01-11 01:15:44,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:15:44" (1/1) ... [2022-01-11 01:15:44,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:15:44" (1/1) ... [2022-01-11 01:15:44,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:15:44" (1/1) ... [2022-01-11 01:15:44,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:15:44" (1/1) ... [2022-01-11 01:15:44,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:15:44" (1/1) ... [2022-01-11 01:15:45,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:15:45,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:15:45,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:15:45,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:15:45,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:15:44" (1/1) ... [2022-01-11 01:15:45,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:15:45,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:15:45,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 01:15:45,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 01:15:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:15:45,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:15:45,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:15:45,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:15:45,282 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:15:45,283 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:15:51,864 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:15:51,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:15:51,892 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-11 01:15:51,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:15:51 BoogieIcfgContainer [2022-01-11 01:15:51,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:15:51,898 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:15:51,898 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:15:51,899 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:15:51,901 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:15:51" (1/1) ... [2022-01-11 01:15:53,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:15:53 BasicIcfg [2022-01-11 01:15:53,113 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:15:53,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:15:53,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:15:53,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:15:53,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:15:41" (1/4) ... [2022-01-11 01:15:53,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9ae209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:15:53, skipping insertion in model container [2022-01-11 01:15:53,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:15:44" (2/4) ... [2022-01-11 01:15:53,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9ae209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:15:53, skipping insertion in model container [2022-01-11 01:15:53,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:15:51" (3/4) ... [2022-01-11 01:15:53,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9ae209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:15:53, skipping insertion in model container [2022-01-11 01:15:53,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:15:53" (4/4) ... [2022-01-11 01:15:53,119 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.06.cil-2.cTransformedIcfg [2022-01-11 01:15:53,123 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:15:53,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 01:15:53,169 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:15:53,174 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 01:15:53,174 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 01:15:53,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 2871 states, 2868 states have (on average 1.788702928870293) internal successors, (5130), 2870 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:53,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:53,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:53,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:53,236 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:53,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:53,240 INFO L85 PathProgramCache]: Analyzing trace with hash 58261984, now seen corresponding path program 1 times [2022-01-11 01:15:53,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:53,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429999067] [2022-01-11 01:15:53,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:53,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:53,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:53,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429999067] [2022-01-11 01:15:53,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429999067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:53,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:53,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:53,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712671074] [2022-01-11 01:15:53,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:53,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:53,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:53,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:53,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:53,704 INFO L87 Difference]: Start difference. First operand has 2871 states, 2868 states have (on average 1.788702928870293) internal successors, (5130), 2870 states have internal predecessors, (5130), 0 states have call successors, (0), 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 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:53,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:53,943 INFO L93 Difference]: Finished difference Result 6273 states and 11062 transitions. [2022-01-11 01:15:53,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:53,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:53,968 INFO L225 Difference]: With dead ends: 6273 [2022-01-11 01:15:53,969 INFO L226 Difference]: Without dead ends: 3345 [2022-01-11 01:15:53,978 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 [2022-01-11 01:15:53,981 INFO L933 BasicCegarLoop]: 5041 mSDtfsCounter, 4956 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4956 SdHoareTripleChecker+Valid, 5914 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:53,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4956 Valid, 5914 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:15:53,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2022-01-11 01:15:54,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3343. [2022-01-11 01:15:54,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7291230170607603) internal successors, (5777), 3342 states have internal predecessors, (5777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:54,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5777 transitions. [2022-01-11 01:15:54,113 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5777 transitions. Word has length 99 [2022-01-11 01:15:54,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:54,113 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5777 transitions. [2022-01-11 01:15:54,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:54,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5777 transitions. [2022-01-11 01:15:54,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:54,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:54,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:54,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:15:54,119 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:54,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:54,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1226458239, now seen corresponding path program 1 times [2022-01-11 01:15:54,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:54,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086689929] [2022-01-11 01:15:54,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:54,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:54,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:54,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086689929] [2022-01-11 01:15:54,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086689929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:54,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:54,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:54,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802986983] [2022-01-11 01:15:54,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:54,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:54,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:54,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:54,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:54,197 INFO L87 Difference]: Start difference. First operand 3343 states and 5777 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:54,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:54,264 INFO L93 Difference]: Finished difference Result 4551 states and 7574 transitions. [2022-01-11 01:15:54,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:54,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:54,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:54,274 INFO L225 Difference]: With dead ends: 4551 [2022-01-11 01:15:54,275 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:15:54,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:54,279 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 4959 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4959 SdHoareTripleChecker+Valid, 4968 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:54,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4959 Valid, 4968 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:54,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:15:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:15:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7267285243938941) internal successors, (5769), 3342 states have internal predecessors, (5769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5769 transitions. [2022-01-11 01:15:54,336 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5769 transitions. Word has length 99 [2022-01-11 01:15:54,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:54,336 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5769 transitions. [2022-01-11 01:15:54,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5769 transitions. [2022-01-11 01:15:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:54,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:54,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:54,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:15:54,346 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:54,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:54,346 INFO L85 PathProgramCache]: Analyzing trace with hash -237520545, now seen corresponding path program 1 times [2022-01-11 01:15:54,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:54,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247962323] [2022-01-11 01:15:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:54,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:54,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:54,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247962323] [2022-01-11 01:15:54,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247962323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:54,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:54,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:54,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043173354] [2022-01-11 01:15:54,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:54,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:54,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:54,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:54,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:54,426 INFO L87 Difference]: Start difference. First operand 3343 states and 5769 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:54,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:54,478 INFO L93 Difference]: Finished difference Result 4550 states and 7557 transitions. [2022-01-11 01:15:54,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:54,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:54,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:54,488 INFO L225 Difference]: With dead ends: 4550 [2022-01-11 01:15:54,488 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:15:54,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:54,497 INFO L933 BasicCegarLoop]: 4963 mSDtfsCounter, 4953 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4953 SdHoareTripleChecker+Valid, 4963 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:54,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4953 Valid, 4963 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:54,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:15:54,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:15:54,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.724334031727028) internal successors, (5761), 3342 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:54,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5761 transitions. [2022-01-11 01:15:54,565 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5761 transitions. Word has length 99 [2022-01-11 01:15:54,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:54,567 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5761 transitions. [2022-01-11 01:15:54,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5761 transitions. [2022-01-11 01:15:54,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:54,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:54,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:54,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:15:54,572 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:54,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:54,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1932011647, now seen corresponding path program 1 times [2022-01-11 01:15:54,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:54,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413159996] [2022-01-11 01:15:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:54,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:54,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:54,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413159996] [2022-01-11 01:15:54,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413159996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:54,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:54,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:54,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157317125] [2022-01-11 01:15:54,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:54,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:54,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:54,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:54,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:54,638 INFO L87 Difference]: Start difference. First operand 3343 states and 5761 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:54,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:54,695 INFO L93 Difference]: Finished difference Result 4549 states and 7540 transitions. [2022-01-11 01:15:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:54,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:54,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:54,706 INFO L225 Difference]: With dead ends: 4549 [2022-01-11 01:15:54,706 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:15:54,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:54,715 INFO L933 BasicCegarLoop]: 4958 mSDtfsCounter, 4947 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:54,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 4958 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:54,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:15:54,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:15:54,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7219395390601617) internal successors, (5753), 3342 states have internal predecessors, (5753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:54,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5753 transitions. [2022-01-11 01:15:54,795 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5753 transitions. Word has length 99 [2022-01-11 01:15:54,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:54,795 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5753 transitions. [2022-01-11 01:15:54,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:54,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5753 transitions. [2022-01-11 01:15:54,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:54,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:54,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:54,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:15:54,796 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:54,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:54,797 INFO L85 PathProgramCache]: Analyzing trace with hash 477975903, now seen corresponding path program 1 times [2022-01-11 01:15:54,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:54,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186073685] [2022-01-11 01:15:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:54,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:54,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:54,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186073685] [2022-01-11 01:15:54,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186073685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:54,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:54,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:54,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540193666] [2022-01-11 01:15:54,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:54,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:54,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:54,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:54,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:54,855 INFO L87 Difference]: Start difference. First operand 3343 states and 5753 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:54,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:54,911 INFO L93 Difference]: Finished difference Result 4548 states and 7523 transitions. [2022-01-11 01:15:54,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:54,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:54,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:54,921 INFO L225 Difference]: With dead ends: 4548 [2022-01-11 01:15:54,921 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:15:54,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:54,924 INFO L933 BasicCegarLoop]: 4953 mSDtfsCounter, 4941 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 4953 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:54,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4941 Valid, 4953 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:54,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:15:55,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:15:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7195450463932955) internal successors, (5745), 3342 states have internal predecessors, (5745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5745 transitions. [2022-01-11 01:15:55,179 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5745 transitions. Word has length 99 [2022-01-11 01:15:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:55,180 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5745 transitions. [2022-01-11 01:15:55,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:55,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5745 transitions. [2022-01-11 01:15:55,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:55,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:55,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:55,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:15:55,187 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:55,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:55,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1261354878, now seen corresponding path program 1 times [2022-01-11 01:15:55,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:55,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7319226] [2022-01-11 01:15:55,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:55,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:55,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:55,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7319226] [2022-01-11 01:15:55,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7319226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:55,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:55,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:55,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533029441] [2022-01-11 01:15:55,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:55,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:55,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:55,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:55,252 INFO L87 Difference]: Start difference. First operand 3343 states and 5745 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:55,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:55,324 INFO L93 Difference]: Finished difference Result 4547 states and 7506 transitions. [2022-01-11 01:15:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:55,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:55,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:55,335 INFO L225 Difference]: With dead ends: 4547 [2022-01-11 01:15:55,335 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:15:55,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:55,339 INFO L933 BasicCegarLoop]: 4948 mSDtfsCounter, 4935 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4935 SdHoareTripleChecker+Valid, 4948 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:55,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4935 Valid, 4948 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:55,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:15:55,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:15:55,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.717150553726429) internal successors, (5737), 3342 states have internal predecessors, (5737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5737 transitions. [2022-01-11 01:15:55,413 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5737 transitions. Word has length 99 [2022-01-11 01:15:55,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:55,414 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5737 transitions. [2022-01-11 01:15:55,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5737 transitions. [2022-01-11 01:15:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:55,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:55,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:55,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:15:55,415 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:55,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:55,416 INFO L85 PathProgramCache]: Analyzing trace with hash 665429086, now seen corresponding path program 1 times [2022-01-11 01:15:55,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:55,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405914744] [2022-01-11 01:15:55,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:55,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:55,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:55,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:55,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405914744] [2022-01-11 01:15:55,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405914744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:55,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:55,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:55,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633358294] [2022-01-11 01:15:55,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:55,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:55,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:55,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:55,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:55,451 INFO L87 Difference]: Start difference. First operand 3343 states and 5737 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:55,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:55,527 INFO L93 Difference]: Finished difference Result 4546 states and 7489 transitions. [2022-01-11 01:15:55,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:55,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:55,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:55,550 INFO L225 Difference]: With dead ends: 4546 [2022-01-11 01:15:55,550 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:15:55,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:55,553 INFO L933 BasicCegarLoop]: 4943 mSDtfsCounter, 4929 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4929 SdHoareTripleChecker+Valid, 4943 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:55,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4929 Valid, 4943 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:55,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:15:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:15:55,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.714756061059563) internal successors, (5729), 3342 states have internal predecessors, (5729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5729 transitions. [2022-01-11 01:15:55,625 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5729 transitions. Word has length 99 [2022-01-11 01:15:55,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:55,625 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5729 transitions. [2022-01-11 01:15:55,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5729 transitions. [2022-01-11 01:15:55,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:55,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:55,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:55,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:15:55,626 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:55,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:55,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1338942334, now seen corresponding path program 1 times [2022-01-11 01:15:55,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:55,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148104965] [2022-01-11 01:15:55,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:55,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:55,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:55,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148104965] [2022-01-11 01:15:55,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148104965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:55,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:55,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:55,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380780166] [2022-01-11 01:15:55,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:55,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:55,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:55,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:55,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:55,673 INFO L87 Difference]: Start difference. First operand 3343 states and 5729 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:55,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:55,770 INFO L93 Difference]: Finished difference Result 4545 states and 7472 transitions. [2022-01-11 01:15:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:55,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:55,778 INFO L225 Difference]: With dead ends: 4545 [2022-01-11 01:15:55,778 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:15:55,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:55,782 INFO L933 BasicCegarLoop]: 4920 mSDtfsCounter, 4842 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4842 SdHoareTripleChecker+Valid, 4988 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:55,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4842 Valid, 4988 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:55,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:15:55,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:15:55,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7075725830589643) internal successors, (5705), 3342 states have internal predecessors, (5705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5705 transitions. [2022-01-11 01:15:55,864 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5705 transitions. Word has length 99 [2022-01-11 01:15:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:55,864 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5705 transitions. [2022-01-11 01:15:55,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5705 transitions. [2022-01-11 01:15:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:55,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:55,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:55,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:15:55,866 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:55,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:55,866 INFO L85 PathProgramCache]: Analyzing trace with hash 845788381, now seen corresponding path program 1 times [2022-01-11 01:15:55,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:55,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142442112] [2022-01-11 01:15:55,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:55,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:55,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:55,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142442112] [2022-01-11 01:15:55,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142442112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:55,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:55,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:55,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963203106] [2022-01-11 01:15:55,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:55,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:55,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:55,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:55,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:55,914 INFO L87 Difference]: Start difference. First operand 3343 states and 5705 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:56,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:56,103 INFO L93 Difference]: Finished difference Result 4544 states and 7423 transitions. [2022-01-11 01:15:56,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:56,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:56,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:56,108 INFO L225 Difference]: With dead ends: 4544 [2022-01-11 01:15:56,109 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:15:56,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:56,112 INFO L933 BasicCegarLoop]: 4906 mSDtfsCounter, 4828 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4828 SdHoareTripleChecker+Valid, 4973 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:56,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4828 Valid, 4973 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:56,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:15:56,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:15:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7003891050583657) internal successors, (5681), 3342 states have internal predecessors, (5681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5681 transitions. [2022-01-11 01:15:56,206 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5681 transitions. Word has length 99 [2022-01-11 01:15:56,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:56,206 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5681 transitions. [2022-01-11 01:15:56,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:56,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5681 transitions. [2022-01-11 01:15:56,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:56,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:56,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:56,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 01:15:56,208 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:56,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:56,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1779661253, now seen corresponding path program 1 times [2022-01-11 01:15:56,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:56,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403381841] [2022-01-11 01:15:56,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:56,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:56,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:56,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403381841] [2022-01-11 01:15:56,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403381841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:56,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:56,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:56,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743318498] [2022-01-11 01:15:56,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:56,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:56,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:56,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:56,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:56,248 INFO L87 Difference]: Start difference. First operand 3343 states and 5681 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:56,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:56,365 INFO L93 Difference]: Finished difference Result 4543 states and 7374 transitions. [2022-01-11 01:15:56,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:56,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:56,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:56,371 INFO L225 Difference]: With dead ends: 4543 [2022-01-11 01:15:56,372 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:15:56,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:56,375 INFO L933 BasicCegarLoop]: 4892 mSDtfsCounter, 4814 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4814 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:56,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4814 Valid, 4958 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:56,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:15:56,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:15:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6932056270577671) internal successors, (5657), 3342 states have internal predecessors, (5657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:56,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5657 transitions. [2022-01-11 01:15:56,468 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5657 transitions. Word has length 99 [2022-01-11 01:15:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:56,468 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5657 transitions. [2022-01-11 01:15:56,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5657 transitions. [2022-01-11 01:15:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:56,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:56,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:56,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 01:15:56,470 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1460873702, now seen corresponding path program 1 times [2022-01-11 01:15:56,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:56,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225396813] [2022-01-11 01:15:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:56,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:56,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:56,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:56,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225396813] [2022-01-11 01:15:56,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225396813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:56,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:56,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:56,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437683716] [2022-01-11 01:15:56,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:56,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:56,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:56,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:56,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:56,504 INFO L87 Difference]: Start difference. First operand 3343 states and 5657 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:56,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:56,596 INFO L93 Difference]: Finished difference Result 4542 states and 7325 transitions. [2022-01-11 01:15:56,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:56,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:56,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:56,602 INFO L225 Difference]: With dead ends: 4542 [2022-01-11 01:15:56,602 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:15:56,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:56,605 INFO L933 BasicCegarLoop]: 4878 mSDtfsCounter, 4800 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4800 SdHoareTripleChecker+Valid, 4943 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:56,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4800 Valid, 4943 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:56,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:15:56,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:15:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6860221490571685) internal successors, (5633), 3342 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5633 transitions. [2022-01-11 01:15:56,690 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5633 transitions. Word has length 99 [2022-01-11 01:15:56,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:56,690 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5633 transitions. [2022-01-11 01:15:56,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:56,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5633 transitions. [2022-01-11 01:15:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:56,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:56,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:56,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:15:56,692 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:56,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:56,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1583723655, now seen corresponding path program 1 times [2022-01-11 01:15:56,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:56,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576906181] [2022-01-11 01:15:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:56,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:56,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:56,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576906181] [2022-01-11 01:15:56,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576906181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:56,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:56,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:56,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908057863] [2022-01-11 01:15:56,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:56,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:56,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:56,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:56,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:56,726 INFO L87 Difference]: Start difference. First operand 3343 states and 5633 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:56,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:56,818 INFO L93 Difference]: Finished difference Result 4541 states and 7276 transitions. [2022-01-11 01:15:56,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:56,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:56,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:56,824 INFO L225 Difference]: With dead ends: 4541 [2022-01-11 01:15:56,825 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:15:56,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:56,828 INFO L933 BasicCegarLoop]: 4864 mSDtfsCounter, 4786 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 4928 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:56,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4786 Valid, 4928 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:56,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:15:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:15:56,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.67883867105657) internal successors, (5609), 3342 states have internal predecessors, (5609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5609 transitions. [2022-01-11 01:15:56,911 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5609 transitions. Word has length 99 [2022-01-11 01:15:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:56,911 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5609 transitions. [2022-01-11 01:15:56,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5609 transitions. [2022-01-11 01:15:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:56,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:56,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:56,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:15:56,913 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:56,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:56,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2109498920, now seen corresponding path program 1 times [2022-01-11 01:15:56,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:56,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23578412] [2022-01-11 01:15:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:56,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:56,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:56,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23578412] [2022-01-11 01:15:56,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23578412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:56,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:56,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:56,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216751475] [2022-01-11 01:15:56,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:56,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:56,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:56,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:56,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:56,955 INFO L87 Difference]: Start difference. First operand 3343 states and 5609 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:57,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:57,063 INFO L93 Difference]: Finished difference Result 4540 states and 7227 transitions. [2022-01-11 01:15:57,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:57,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:57,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:57,070 INFO L225 Difference]: With dead ends: 4540 [2022-01-11 01:15:57,070 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:15:57,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:57,073 INFO L933 BasicCegarLoop]: 4850 mSDtfsCounter, 4772 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4772 SdHoareTripleChecker+Valid, 4913 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:57,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4772 Valid, 4913 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:57,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:15:57,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:15:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6716551930559713) internal successors, (5585), 3342 states have internal predecessors, (5585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:57,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5585 transitions. [2022-01-11 01:15:57,142 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5585 transitions. Word has length 99 [2022-01-11 01:15:57,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:57,143 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5585 transitions. [2022-01-11 01:15:57,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5585 transitions. [2022-01-11 01:15:57,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:57,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:57,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:57,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 01:15:57,144 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:57,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:57,145 INFO L85 PathProgramCache]: Analyzing trace with hash 674921911, now seen corresponding path program 1 times [2022-01-11 01:15:57,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:57,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221431731] [2022-01-11 01:15:57,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:57,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:57,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:57,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221431731] [2022-01-11 01:15:57,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221431731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:57,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:57,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:57,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223873621] [2022-01-11 01:15:57,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:57,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:57,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:57,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:57,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:57,175 INFO L87 Difference]: Start difference. First operand 3343 states and 5585 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:57,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:57,267 INFO L93 Difference]: Finished difference Result 4539 states and 7178 transitions. [2022-01-11 01:15:57,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:57,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:57,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:57,274 INFO L225 Difference]: With dead ends: 4539 [2022-01-11 01:15:57,274 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:15:57,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:57,277 INFO L933 BasicCegarLoop]: 4836 mSDtfsCounter, 4758 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 4898 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:57,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4758 Valid, 4898 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:57,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:15:57,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:15:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6644717150553727) internal successors, (5561), 3342 states have internal predecessors, (5561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:57,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5561 transitions. [2022-01-11 01:15:57,354 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5561 transitions. Word has length 99 [2022-01-11 01:15:57,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:57,355 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5561 transitions. [2022-01-11 01:15:57,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:57,355 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5561 transitions. [2022-01-11 01:15:57,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:57,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:57,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:57,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 01:15:57,356 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:57,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:57,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1309635946, now seen corresponding path program 1 times [2022-01-11 01:15:57,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:57,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388258040] [2022-01-11 01:15:57,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:57,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:57,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:57,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388258040] [2022-01-11 01:15:57,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388258040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:57,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:57,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:15:57,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569066364] [2022-01-11 01:15:57,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:57,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:15:57,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:57,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:15:57,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:15:57,411 INFO L87 Difference]: Start difference. First operand 3343 states and 5561 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:57,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:57,613 INFO L93 Difference]: Finished difference Result 5135 states and 7947 transitions. [2022-01-11 01:15:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:15:57,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:57,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:57,621 INFO L225 Difference]: With dead ends: 5135 [2022-01-11 01:15:57,621 INFO L226 Difference]: Without dead ends: 3953 [2022-01-11 01:15:57,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:15:57,626 INFO L933 BasicCegarLoop]: 4910 mSDtfsCounter, 2369 mSDsluCounter, 13177 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 18087 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:57,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2369 Valid, 18087 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:15:57,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2022-01-11 01:15:57,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 3349. [2022-01-11 01:15:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3347 states have (on average 1.6585001493875111) internal successors, (5551), 3348 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 5551 transitions. [2022-01-11 01:15:57,720 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 5551 transitions. Word has length 99 [2022-01-11 01:15:57,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:57,721 INFO L470 AbstractCegarLoop]: Abstraction has 3349 states and 5551 transitions. [2022-01-11 01:15:57,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 5551 transitions. [2022-01-11 01:15:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:57,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:57,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:57,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:15:57,722 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:57,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:57,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1818635031, now seen corresponding path program 1 times [2022-01-11 01:15:57,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:57,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9395132] [2022-01-11 01:15:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:57,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:57,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:57,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:57,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9395132] [2022-01-11 01:15:57,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9395132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:57,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:57,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:15:57,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263203242] [2022-01-11 01:15:57,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:57,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:15:57,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:57,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:15:57,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:15:57,775 INFO L87 Difference]: Start difference. First operand 3349 states and 5551 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:58,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:58,063 INFO L93 Difference]: Finished difference Result 5534 states and 8421 transitions. [2022-01-11 01:15:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:15:58,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:58,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:58,071 INFO L225 Difference]: With dead ends: 5534 [2022-01-11 01:15:58,071 INFO L226 Difference]: Without dead ends: 4381 [2022-01-11 01:15:58,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:15:58,075 INFO L933 BasicCegarLoop]: 4809 mSDtfsCounter, 1808 mSDsluCounter, 14197 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 19006 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:58,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1808 Valid, 19006 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:15:58,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2022-01-11 01:15:58,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 3355. [2022-01-11 01:15:58,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3355 states, 3353 states have (on average 1.6525499552639427) internal successors, (5541), 3354 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3355 states to 3355 states and 5541 transitions. [2022-01-11 01:15:58,202 INFO L78 Accepts]: Start accepts. Automaton has 3355 states and 5541 transitions. Word has length 99 [2022-01-11 01:15:58,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:58,202 INFO L470 AbstractCegarLoop]: Abstraction has 3355 states and 5541 transitions. [2022-01-11 01:15:58,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:58,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3355 states and 5541 transitions. [2022-01-11 01:15:58,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:15:58,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:58,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:15:58,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 01:15:58,204 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:58,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:58,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2125532328, now seen corresponding path program 1 times [2022-01-11 01:15:58,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:58,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774202111] [2022-01-11 01:15:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:58,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:58,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:58,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774202111] [2022-01-11 01:15:58,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774202111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:58,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:58,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:15:58,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592834772] [2022-01-11 01:15:58,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:58,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:58,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:58,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:58,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:58,252 INFO L87 Difference]: Start difference. First operand 3355 states and 5541 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:58,463 INFO L93 Difference]: Finished difference Result 5678 states and 8530 transitions. [2022-01-11 01:15:58,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:58,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 01:15:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:58,471 INFO L225 Difference]: With dead ends: 5678 [2022-01-11 01:15:58,471 INFO L226 Difference]: Without dead ends: 4472 [2022-01-11 01:15:58,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:58,474 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 4708 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 5560 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:58,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4708 Valid, 5560 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:58,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2022-01-11 01:15:58,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 4370. [2022-01-11 01:15:58,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4368 states have (on average 1.5647893772893773) internal successors, (6835), 4369 states have internal predecessors, (6835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 6835 transitions. [2022-01-11 01:15:58,660 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 6835 transitions. Word has length 99 [2022-01-11 01:15:58,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:58,661 INFO L470 AbstractCegarLoop]: Abstraction has 4370 states and 6835 transitions. [2022-01-11 01:15:58,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:58,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 6835 transitions. [2022-01-11 01:15:58,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 01:15:58,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:58,663 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] [2022-01-11 01:15:58,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 01:15:58,663 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:58,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:58,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1987499719, now seen corresponding path program 1 times [2022-01-11 01:15:58,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:58,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608844856] [2022-01-11 01:15:58,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:58,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:58,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:58,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608844856] [2022-01-11 01:15:58,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608844856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:58,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:58,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:15:58,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497260963] [2022-01-11 01:15:58,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:58,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:58,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:58,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:58,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:58,715 INFO L87 Difference]: Start difference. First operand 4370 states and 6835 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:59,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:59,060 INFO L93 Difference]: Finished difference Result 8667 states and 12347 transitions. [2022-01-11 01:15:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:59,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-11 01:15:59,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:59,073 INFO L225 Difference]: With dead ends: 8667 [2022-01-11 01:15:59,074 INFO L226 Difference]: Without dead ends: 6452 [2022-01-11 01:15:59,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:59,079 INFO L933 BasicCegarLoop]: 4816 mSDtfsCounter, 4723 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 5557 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:59,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4723 Valid, 5557 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6452 states. [2022-01-11 01:15:59,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6452 to 6278. [2022-01-11 01:15:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6278 states, 6276 states have (on average 1.4765774378585086) internal successors, (9267), 6277 states have internal predecessors, (9267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:59,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 9267 transitions. [2022-01-11 01:15:59,358 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 9267 transitions. Word has length 160 [2022-01-11 01:15:59,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:15:59,358 INFO L470 AbstractCegarLoop]: Abstraction has 6278 states and 9267 transitions. [2022-01-11 01:15:59,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:59,358 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 9267 transitions. [2022-01-11 01:15:59,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 01:15:59,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:15:59,361 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] [2022-01-11 01:15:59,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 01:15:59,361 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:15:59,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:15:59,362 INFO L85 PathProgramCache]: Analyzing trace with hash 188793081, now seen corresponding path program 1 times [2022-01-11 01:15:59,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:15:59,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104560180] [2022-01-11 01:15:59,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:15:59,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:15:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:15:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:15:59,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:15:59,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104560180] [2022-01-11 01:15:59,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104560180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:15:59,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:15:59,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:15:59,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118513878] [2022-01-11 01:15:59,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:15:59,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:15:59,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:15:59,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:15:59,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:59,411 INFO L87 Difference]: Start difference. First operand 6278 states and 9267 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:15:59,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:15:59,814 INFO L93 Difference]: Finished difference Result 14139 states and 19223 transitions. [2022-01-11 01:15:59,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:15:59,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-11 01:15:59,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:15:59,831 INFO L225 Difference]: With dead ends: 14139 [2022-01-11 01:15:59,831 INFO L226 Difference]: Without dead ends: 10071 [2022-01-11 01:15:59,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:15:59,838 INFO L933 BasicCegarLoop]: 5220 mSDtfsCounter, 4583 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4583 SdHoareTripleChecker+Valid, 6070 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:15:59,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4583 Valid, 6070 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:15:59,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10071 states. [2022-01-11 01:16:00,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10071 to 10069. [2022-01-11 01:16:00,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10069 states, 10067 states have (on average 1.3893910797655706) internal successors, (13987), 10068 states have internal predecessors, (13987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10069 states to 10069 states and 13987 transitions. [2022-01-11 01:16:00,243 INFO L78 Accepts]: Start accepts. Automaton has 10069 states and 13987 transitions. Word has length 160 [2022-01-11 01:16:00,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:16:00,243 INFO L470 AbstractCegarLoop]: Abstraction has 10069 states and 13987 transitions. [2022-01-11 01:16:00,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:00,243 INFO L276 IsEmpty]: Start isEmpty. Operand 10069 states and 13987 transitions. [2022-01-11 01:16:00,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 01:16:00,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:16:00,248 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] [2022-01-11 01:16:00,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 01:16:00,248 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:16:00,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:16:00,248 INFO L85 PathProgramCache]: Analyzing trace with hash -116841448, now seen corresponding path program 1 times [2022-01-11 01:16:00,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:16:00,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484242401] [2022-01-11 01:16:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:16:00,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:16:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:16:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:16:00,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:16:00,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484242401] [2022-01-11 01:16:00,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484242401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:16:00,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:16:00,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:16:00,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420411462] [2022-01-11 01:16:00,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:16:00,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:16:00,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:16:00,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:16:00,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:00,284 INFO L87 Difference]: Start difference. First operand 10069 states and 13987 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:00,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:16:00,644 INFO L93 Difference]: Finished difference Result 17845 states and 23812 transitions. [2022-01-11 01:16:00,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:16:00,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-11 01:16:00,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:16:00,661 INFO L225 Difference]: With dead ends: 17845 [2022-01-11 01:16:00,661 INFO L226 Difference]: Without dead ends: 9986 [2022-01-11 01:16:00,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:00,673 INFO L933 BasicCegarLoop]: 4826 mSDtfsCounter, 864 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 8784 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:16:00,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 8784 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:16:00,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2022-01-11 01:16:01,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9986. [2022-01-11 01:16:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 9984 states have (on average 1.391025641025641) internal successors, (13888), 9985 states have internal predecessors, (13888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 13888 transitions. [2022-01-11 01:16:01,074 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 13888 transitions. Word has length 160 [2022-01-11 01:16:01,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:16:01,074 INFO L470 AbstractCegarLoop]: Abstraction has 9986 states and 13888 transitions. [2022-01-11 01:16:01,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:01,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 13888 transitions. [2022-01-11 01:16:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-11 01:16:01,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:16:01,081 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] [2022-01-11 01:16:01,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 01:16:01,081 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:16:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:16:01,082 INFO L85 PathProgramCache]: Analyzing trace with hash 886799409, now seen corresponding path program 1 times [2022-01-11 01:16:01,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:16:01,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467260694] [2022-01-11 01:16:01,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:16:01,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:16:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:16:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:16:01,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:16:01,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467260694] [2022-01-11 01:16:01,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467260694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:16:01,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:16:01,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:16:01,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963848763] [2022-01-11 01:16:01,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:16:01,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:16:01,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:16:01,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:16:01,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:01,139 INFO L87 Difference]: Start difference. First operand 9986 states and 13888 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:01,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:16:01,858 INFO L93 Difference]: Finished difference Result 25140 states and 32946 transitions. [2022-01-11 01:16:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:16:01,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2022-01-11 01:16:01,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:16:01,891 INFO L225 Difference]: With dead ends: 25140 [2022-01-11 01:16:01,891 INFO L226 Difference]: Without dead ends: 17364 [2022-01-11 01:16:01,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:01,905 INFO L933 BasicCegarLoop]: 5019 mSDtfsCounter, 4724 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5858 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 [2022-01-11 01:16:01,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5858 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:16:01,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17364 states. [2022-01-11 01:16:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17364 to 16850. [2022-01-11 01:16:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16850 states, 16848 states have (on average 1.331908831908832) internal successors, (22440), 16849 states have internal predecessors, (22440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16850 states to 16850 states and 22440 transitions. [2022-01-11 01:16:02,670 INFO L78 Accepts]: Start accepts. Automaton has 16850 states and 22440 transitions. Word has length 161 [2022-01-11 01:16:02,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:16:02,670 INFO L470 AbstractCegarLoop]: Abstraction has 16850 states and 22440 transitions. [2022-01-11 01:16:02,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 16850 states and 22440 transitions. [2022-01-11 01:16:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-11 01:16:02,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:16:02,679 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] [2022-01-11 01:16:02,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 01:16:02,679 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:16:02,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:16:02,679 INFO L85 PathProgramCache]: Analyzing trace with hash -456380654, now seen corresponding path program 1 times [2022-01-11 01:16:02,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:16:02,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782817639] [2022-01-11 01:16:02,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:16:02,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:16:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:16:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:16:02,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:16:02,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782817639] [2022-01-11 01:16:02,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782817639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:16:02,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:16:02,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:16:02,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684223828] [2022-01-11 01:16:02,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:16:02,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:16:02,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:16:02,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:16:02,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:02,705 INFO L87 Difference]: Start difference. First operand 16850 states and 22440 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:03,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:16:03,479 INFO L93 Difference]: Finished difference Result 31452 states and 40772 transitions. [2022-01-11 01:16:03,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:16:03,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 161 [2022-01-11 01:16:03,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:16:03,512 INFO L225 Difference]: With dead ends: 31452 [2022-01-11 01:16:03,512 INFO L226 Difference]: Without dead ends: 16768 [2022-01-11 01:16:03,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:03,563 INFO L933 BasicCegarLoop]: 4825 mSDtfsCounter, 862 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 8783 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:16:03,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 8783 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:16:03,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16768 states. [2022-01-11 01:16:04,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16768 to 16768. [2022-01-11 01:16:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16768 states, 16766 states have (on average 1.3326374806155314) internal successors, (22343), 16767 states have internal predecessors, (22343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16768 states to 16768 states and 22343 transitions. [2022-01-11 01:16:04,504 INFO L78 Accepts]: Start accepts. Automaton has 16768 states and 22343 transitions. Word has length 161 [2022-01-11 01:16:04,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:16:04,504 INFO L470 AbstractCegarLoop]: Abstraction has 16768 states and 22343 transitions. [2022-01-11 01:16:04,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:04,504 INFO L276 IsEmpty]: Start isEmpty. Operand 16768 states and 22343 transitions. [2022-01-11 01:16:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 01:16:04,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:16:04,511 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] [2022-01-11 01:16:04,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 01:16:04,512 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:16:04,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:16:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1966576152, now seen corresponding path program 1 times [2022-01-11 01:16:04,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:16:04,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115114324] [2022-01-11 01:16:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:16:04,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:16:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:16:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:16:04,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:16:04,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115114324] [2022-01-11 01:16:04,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115114324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:16:04,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:16:04,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:16:04,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618013342] [2022-01-11 01:16:04,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:16:04,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:16:04,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:16:04,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:16:04,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:04,562 INFO L87 Difference]: Start difference. First operand 16768 states and 22343 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:05,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:16:05,923 INFO L93 Difference]: Finished difference Result 44901 states and 57575 transitions. [2022-01-11 01:16:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:16:05,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2022-01-11 01:16:05,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:16:05,977 INFO L225 Difference]: With dead ends: 44901 [2022-01-11 01:16:05,977 INFO L226 Difference]: Without dead ends: 30343 [2022-01-11 01:16:06,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:06,002 INFO L933 BasicCegarLoop]: 5020 mSDtfsCounter, 4724 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5857 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:16:06,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5857 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:16:06,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30343 states. [2022-01-11 01:16:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30343 to 29541. [2022-01-11 01:16:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29541 states, 29539 states have (on average 1.2947290023358948) internal successors, (38245), 29540 states have internal predecessors, (38245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29541 states to 29541 states and 38245 transitions. [2022-01-11 01:16:07,486 INFO L78 Accepts]: Start accepts. Automaton has 29541 states and 38245 transitions. Word has length 162 [2022-01-11 01:16:07,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:16:07,486 INFO L470 AbstractCegarLoop]: Abstraction has 29541 states and 38245 transitions. [2022-01-11 01:16:07,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:07,486 INFO L276 IsEmpty]: Start isEmpty. Operand 29541 states and 38245 transitions. [2022-01-11 01:16:07,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 01:16:07,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:16:07,497 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] [2022-01-11 01:16:07,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 01:16:07,497 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:16:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:16:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1912459259, now seen corresponding path program 1 times [2022-01-11 01:16:07,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:16:07,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516107475] [2022-01-11 01:16:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:16:07,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:16:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:16:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:16:07,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:16:07,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516107475] [2022-01-11 01:16:07,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516107475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:16:07,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:16:07,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:16:07,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343212513] [2022-01-11 01:16:07,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:16:07,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:16:07,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:16:07,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:16:07,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:07,521 INFO L87 Difference]: Start difference. First operand 29541 states and 38245 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:16:09,058 INFO L93 Difference]: Finished difference Result 56828 states and 72376 transitions. [2022-01-11 01:16:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:16:09,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 162 [2022-01-11 01:16:09,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:16:09,104 INFO L225 Difference]: With dead ends: 56828 [2022-01-11 01:16:09,104 INFO L226 Difference]: Without dead ends: 29460 [2022-01-11 01:16:09,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:09,132 INFO L933 BasicCegarLoop]: 4824 mSDtfsCounter, 860 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 8782 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:16:09,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 8782 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:16:09,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29460 states. [2022-01-11 01:16:10,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29460 to 29460. [2022-01-11 01:16:10,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29460 states, 29458 states have (on average 1.295064159141829) internal successors, (38150), 29459 states have internal predecessors, (38150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29460 states to 29460 states and 38150 transitions. [2022-01-11 01:16:10,738 INFO L78 Accepts]: Start accepts. Automaton has 29460 states and 38150 transitions. Word has length 162 [2022-01-11 01:16:10,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:16:10,738 INFO L470 AbstractCegarLoop]: Abstraction has 29460 states and 38150 transitions. [2022-01-11 01:16:10,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:10,738 INFO L276 IsEmpty]: Start isEmpty. Operand 29460 states and 38150 transitions. [2022-01-11 01:16:10,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-11 01:16:10,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:16:10,748 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] [2022-01-11 01:16:10,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 01:16:10,749 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:16:10,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:16:10,749 INFO L85 PathProgramCache]: Analyzing trace with hash 40185600, now seen corresponding path program 1 times [2022-01-11 01:16:10,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:16:10,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694549935] [2022-01-11 01:16:10,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:16:10,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:16:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:16:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:16:10,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:16:10,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694549935] [2022-01-11 01:16:10,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694549935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:16:10,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:16:10,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:16:10,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786047966] [2022-01-11 01:16:10,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:16:10,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:16:10,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:16:10,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:16:10,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:10,802 INFO L87 Difference]: Start difference. First operand 29460 states and 38150 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:13,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:16:13,531 INFO L93 Difference]: Finished difference Result 81560 states and 103188 transitions. [2022-01-11 01:16:13,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:16:13,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2022-01-11 01:16:13,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:16:13,631 INFO L225 Difference]: With dead ends: 81560 [2022-01-11 01:16:13,632 INFO L226 Difference]: Without dead ends: 54310 [2022-01-11 01:16:13,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:13,662 INFO L933 BasicCegarLoop]: 5005 mSDtfsCounter, 4654 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 5840 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:16:13,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4654 Valid, 5840 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:16:13,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54310 states. [2022-01-11 01:16:16,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54310 to 53156. [2022-01-11 01:16:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53156 states, 53154 states have (on average 1.27181397448922) internal successors, (67602), 53155 states have internal predecessors, (67602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53156 states to 53156 states and 67602 transitions. [2022-01-11 01:16:16,882 INFO L78 Accepts]: Start accepts. Automaton has 53156 states and 67602 transitions. Word has length 163 [2022-01-11 01:16:16,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:16:16,882 INFO L470 AbstractCegarLoop]: Abstraction has 53156 states and 67602 transitions. [2022-01-11 01:16:16,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:16,882 INFO L276 IsEmpty]: Start isEmpty. Operand 53156 states and 67602 transitions. [2022-01-11 01:16:16,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-11 01:16:16,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:16:16,896 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] [2022-01-11 01:16:16,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 01:16:16,896 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:16:16,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:16:16,897 INFO L85 PathProgramCache]: Analyzing trace with hash 811104480, now seen corresponding path program 1 times [2022-01-11 01:16:16,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:16:16,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902256743] [2022-01-11 01:16:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:16:16,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:16:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:16:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:16:16,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:16:16,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902256743] [2022-01-11 01:16:16,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902256743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:16:16,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:16:16,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:16:16,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133490263] [2022-01-11 01:16:16,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:16:16,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:16:16,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:16:16,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:16:16,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:16,922 INFO L87 Difference]: Start difference. First operand 53156 states and 67602 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:19,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:16:19,684 INFO L93 Difference]: Finished difference Result 104052 states and 131084 transitions. [2022-01-11 01:16:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:16:19,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2022-01-11 01:16:19,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:16:19,770 INFO L225 Difference]: With dead ends: 104052 [2022-01-11 01:16:19,770 INFO L226 Difference]: Without dead ends: 53076 [2022-01-11 01:16:19,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:19,811 INFO L933 BasicCegarLoop]: 4823 mSDtfsCounter, 858 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 8781 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:16:19,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 8781 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:16:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53076 states. [2022-01-11 01:16:22,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53076 to 53076. [2022-01-11 01:16:22,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53076 states, 53074 states have (on average 1.271978746655613) internal successors, (67509), 53075 states have internal predecessors, (67509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:23,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53076 states to 53076 states and 67509 transitions. [2022-01-11 01:16:23,000 INFO L78 Accepts]: Start accepts. Automaton has 53076 states and 67509 transitions. Word has length 163 [2022-01-11 01:16:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:16:23,000 INFO L470 AbstractCegarLoop]: Abstraction has 53076 states and 67509 transitions. [2022-01-11 01:16:23,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand 53076 states and 67509 transitions. [2022-01-11 01:16:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 01:16:23,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:16:23,016 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] [2022-01-11 01:16:23,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 01:16:23,016 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:16:23,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:16:23,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1769434718, now seen corresponding path program 1 times [2022-01-11 01:16:23,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:16:23,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385166885] [2022-01-11 01:16:23,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:16:23,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:16:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:16:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:16:23,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:16:23,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385166885] [2022-01-11 01:16:23,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385166885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:16:23,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:16:23,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:16:23,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256737446] [2022-01-11 01:16:23,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:16:23,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:16:23,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:16:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:16:23,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:23,055 INFO L87 Difference]: Start difference. First operand 53076 states and 67509 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) [2022-01-11 01:16:28,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:16:28,972 INFO L93 Difference]: Finished difference Result 149103 states and 187025 transitions. [2022-01-11 01:16:28,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:16:28,972 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 164 [2022-01-11 01:16:28,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:16:29,130 INFO L225 Difference]: With dead ends: 149103 [2022-01-11 01:16:29,130 INFO L226 Difference]: Without dead ends: 98237 [2022-01-11 01:16:29,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:29,179 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 4724 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5801 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:16:29,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5801 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:16:29,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98237 states. [2022-01-11 01:16:34,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98237 to 96443. [2022-01-11 01:16:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96443 states, 96441 states have (on average 1.2572142553478292) internal successors, (121247), 96442 states have internal predecessors, (121247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:35,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96443 states to 96443 states and 121247 transitions. [2022-01-11 01:16:35,172 INFO L78 Accepts]: Start accepts. Automaton has 96443 states and 121247 transitions. Word has length 164 [2022-01-11 01:16:35,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:16:35,172 INFO L470 AbstractCegarLoop]: Abstraction has 96443 states and 121247 transitions. [2022-01-11 01:16:35,173 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) [2022-01-11 01:16:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand 96443 states and 121247 transitions. [2022-01-11 01:16:35,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 01:16:35,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:16:35,201 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] [2022-01-11 01:16:35,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 01:16:35,202 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:16:35,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:16:35,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1479657989, now seen corresponding path program 1 times [2022-01-11 01:16:35,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:16:35,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213342019] [2022-01-11 01:16:35,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:16:35,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:16:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:16:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:16:35,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:16:35,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213342019] [2022-01-11 01:16:35,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213342019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:16:35,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:16:35,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:16:35,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276975214] [2022-01-11 01:16:35,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:16:35,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:16:35,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:16:35,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:16:35,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:35,228 INFO L87 Difference]: Start difference. First operand 96443 states and 121247 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:16:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:16:41,049 INFO L93 Difference]: Finished difference Result 190620 states and 238368 transitions. [2022-01-11 01:16:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:16:41,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 [2022-01-11 01:16:41,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:16:41,215 INFO L225 Difference]: With dead ends: 190620 [2022-01-11 01:16:41,215 INFO L226 Difference]: Without dead ends: 96364 [2022-01-11 01:16:41,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:16:41,291 INFO L933 BasicCegarLoop]: 4822 mSDtfsCounter, 856 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 8780 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:16:41,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 8780 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:16:41,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96364 states.