/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_SUM.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.06.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:05:16,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:05:16,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:05:17,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:05:17,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:05:17,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:05:17,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:05:17,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:05:17,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:05:17,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:05:17,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:05:17,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:05:17,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:05:17,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:05:17,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:05:17,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:05:17,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:05:17,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:05:17,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:05:17,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:05:17,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:05:17,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:05:17,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:05:17,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:05:17,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:05:17,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:05:17,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:05:17,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:05:17,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:05:17,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:05:17,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:05:17,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:05:17,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:05:17,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:05:17,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:05:17,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:05:17,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:05:17,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:05:17,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:05:17,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:05:17,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:05:17,063 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:05:17,087 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:05:17,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:05:17,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:05:17,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:05:17,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:05:17,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:05:17,089 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:05:17,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:05:17,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:05:17,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:05:17,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:05:17,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:05:17,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:05:17,089 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:05:17,089 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:05:17,089 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:05:17,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:05:17,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:05:17,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:05:17,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:05:17,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:05:17,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:05:17,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:05:17,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:05:17,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:05:17,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:05:17,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:05:17,090 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:05:17,091 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:05:17,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:05:17,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:05:17,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:05:17,091 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:05:17,091 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:05:17,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:05:17,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:05:17,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:05:17,332 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:05:17,347 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:05:17,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.06.cil-1.c [2022-01-11 06:05:17,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71058df55/6afc4a2f2dca4caeacaf67dd8fc0e3b8/FLAG3e963c688 [2022-01-11 06:05:17,866 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:05:17,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-1.c [2022-01-11 06:05:17,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71058df55/6afc4a2f2dca4caeacaf67dd8fc0e3b8/FLAG3e963c688 [2022-01-11 06:05:18,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71058df55/6afc4a2f2dca4caeacaf67dd8fc0e3b8 [2022-01-11 06:05:18,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:05:18,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:05:18,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:05:18,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:05:18,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:05:18,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:05:18" (1/1) ... [2022-01-11 06:05:18,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ced4b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:18, skipping insertion in model container [2022-01-11 06:05:18,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:05:18" (1/1) ... [2022-01-11 06:05:18,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:05:18,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:05:18,575 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-1.c[671,684] [2022-01-11 06:05:18,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:05:18,738 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:05:18,745 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-1.c[671,684] [2022-01-11 06:05:18,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:05:18,811 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:05:18,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:18 WrapperNode [2022-01-11 06:05:18,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:05:18,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:05:18,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:05:18,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:05:18,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:18" (1/1) ... [2022-01-11 06:05:18,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:18" (1/1) ... [2022-01-11 06:05:18,884 INFO L137 Inliner]: procedures = 40, calls = 50, calls flagged for inlining = 45, calls inlined = 114, statements flattened = 1662 [2022-01-11 06:05:18,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:05:18,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:05:18,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:05:18,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:05:18,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:18" (1/1) ... [2022-01-11 06:05:18,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:18" (1/1) ... [2022-01-11 06:05:18,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:18" (1/1) ... [2022-01-11 06:05:18,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:18" (1/1) ... [2022-01-11 06:05:18,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:18" (1/1) ... [2022-01-11 06:05:18,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:18" (1/1) ... [2022-01-11 06:05:18,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:18" (1/1) ... [2022-01-11 06:05:18,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:05:18,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:05:18,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:05:18,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:05:18,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:18" (1/1) ... [2022-01-11 06:05:18,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:05:18,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:05:18,979 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 06:05:18,983 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 06:05:19,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:05:19,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:05:19,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:05:19,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:05:19,082 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:05:19,083 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:05:19,963 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:05:19,972 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:05:19,972 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-11 06:05:19,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:05:19 BoogieIcfgContainer [2022-01-11 06:05:19,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:05:19,975 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:05:19,975 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:05:19,976 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:05:19,978 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:05:19" (1/1) ... [2022-01-11 06:05:20,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:05:20 BasicIcfg [2022-01-11 06:05:20,129 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:05:20,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:05:20,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:05:20,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:05:20,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:05:18" (1/4) ... [2022-01-11 06:05:20,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c03ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:05:20, skipping insertion in model container [2022-01-11 06:05:20,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:18" (2/4) ... [2022-01-11 06:05:20,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c03ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:05:20, skipping insertion in model container [2022-01-11 06:05:20,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:05:19" (3/4) ... [2022-01-11 06:05:20,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c03ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:05:20, skipping insertion in model container [2022-01-11 06:05:20,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:05:20" (4/4) ... [2022-01-11 06:05:20,134 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-1.cTransformedIcfg [2022-01-11 06:05:20,137 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:05:20,137 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 06:05:20,169 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:05:20,173 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 06:05:20,174 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 06:05:20,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 696 states, 693 states have (on average 1.5281385281385282) internal successors, (1059), 695 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states 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 06:05:20,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:05:20,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:20,199 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] [2022-01-11 06:05:20,200 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1384474238, now seen corresponding path program 1 times [2022-01-11 06:05:20,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:20,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497730415] [2022-01-11 06:05:20,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:20,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:20,371 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 06:05:20,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:20,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497730415] [2022-01-11 06:05:20,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497730415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:20,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:20,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:20,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851554157] [2022-01-11 06:05:20,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:20,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:20,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:20,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:20,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:20,399 INFO L87 Difference]: Start difference. First operand has 696 states, 693 states have (on average 1.5281385281385282) internal successors, (1059), 695 states have internal predecessors, (1059), 0 states have call successors, (0), 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 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:20,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:20,556 INFO L93 Difference]: Finished difference Result 1929 states and 2932 transitions. [2022-01-11 06:05:20,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:20,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:05:20,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:20,596 INFO L225 Difference]: With dead ends: 1929 [2022-01-11 06:05:20,596 INFO L226 Difference]: Without dead ends: 1238 [2022-01-11 06:05:20,614 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 06:05:20,617 INFO L933 BasicCegarLoop]: 1031 mSDtfsCounter, 947 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:20,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [947 Valid, 1914 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:20,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-01-11 06:05:20,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1234. [2022-01-11 06:05:20,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1232 states have (on average 1.4935064935064934) internal successors, (1840), 1233 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states 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 06:05:20,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1840 transitions. [2022-01-11 06:05:20,747 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1840 transitions. Word has length 98 [2022-01-11 06:05:20,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:20,747 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1840 transitions. [2022-01-11 06:05:20,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:20,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1840 transitions. [2022-01-11 06:05:20,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:05:20,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:20,750 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] [2022-01-11 06:05:20,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:05:20,750 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:20,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:20,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1049195106, now seen corresponding path program 1 times [2022-01-11 06:05:20,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:20,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309666298] [2022-01-11 06:05:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:20,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:20,819 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 06:05:20,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:20,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309666298] [2022-01-11 06:05:20,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309666298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:20,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:20,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:20,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991210915] [2022-01-11 06:05:20,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:20,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:20,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:20,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:20,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:20,822 INFO L87 Difference]: Start difference. First operand 1234 states and 1840 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:20,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:20,881 INFO L93 Difference]: Finished difference Result 2454 states and 3658 transitions. [2022-01-11 06:05:20,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:20,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:05:20,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:20,889 INFO L225 Difference]: With dead ends: 2454 [2022-01-11 06:05:20,890 INFO L226 Difference]: Without dead ends: 1234 [2022-01-11 06:05:20,897 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 06:05:20,898 INFO L933 BasicCegarLoop]: 1021 mSDtfsCounter, 1013 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1021 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 06:05:20,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 1021 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-11 06:05:20,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2022-01-11 06:05:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1232 states have (on average 1.4870129870129871) internal successors, (1832), 1233 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 06:05:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1832 transitions. [2022-01-11 06:05:20,935 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1832 transitions. Word has length 98 [2022-01-11 06:05:20,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:20,935 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1832 transitions. [2022-01-11 06:05:20,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:20,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1832 transitions. [2022-01-11 06:05:20,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:05:20,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:20,942 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] [2022-01-11 06:05:20,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:05:20,944 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:20,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:20,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1781793406, now seen corresponding path program 1 times [2022-01-11 06:05:20,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:20,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7279440] [2022-01-11 06:05:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:20,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:21,049 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 06:05:21,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:21,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7279440] [2022-01-11 06:05:21,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7279440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:21,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:21,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:21,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622799091] [2022-01-11 06:05:21,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:21,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:21,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:21,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:21,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:21,052 INFO L87 Difference]: Start difference. First operand 1234 states and 1832 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:21,090 INFO L93 Difference]: Finished difference Result 2453 states and 3641 transitions. [2022-01-11 06:05:21,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:21,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:05:21,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:21,094 INFO L225 Difference]: With dead ends: 2453 [2022-01-11 06:05:21,094 INFO L226 Difference]: Without dead ends: 1234 [2022-01-11 06:05:21,097 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 06:05:21,100 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 1007 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1016 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 06:05:21,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1007 Valid, 1016 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:21,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-11 06:05:21,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2022-01-11 06:05:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1232 states have (on average 1.4805194805194806) internal successors, (1824), 1233 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states 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 06:05:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1824 transitions. [2022-01-11 06:05:21,129 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1824 transitions. Word has length 98 [2022-01-11 06:05:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:21,130 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1824 transitions. [2022-01-11 06:05:21,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1824 transitions. [2022-01-11 06:05:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:05:21,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:21,136 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] [2022-01-11 06:05:21,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:05:21,136 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:21,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:21,138 INFO L85 PathProgramCache]: Analyzing trace with hash -343641698, now seen corresponding path program 1 times [2022-01-11 06:05:21,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:21,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467734242] [2022-01-11 06:05:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:21,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:21,210 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 06:05:21,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:21,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467734242] [2022-01-11 06:05:21,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467734242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:21,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:21,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:21,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386195875] [2022-01-11 06:05:21,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:21,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:21,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:21,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:21,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:21,212 INFO L87 Difference]: Start difference. First operand 1234 states and 1824 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:21,257 INFO L93 Difference]: Finished difference Result 2452 states and 3624 transitions. [2022-01-11 06:05:21,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:21,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:05:21,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:21,261 INFO L225 Difference]: With dead ends: 2452 [2022-01-11 06:05:21,261 INFO L226 Difference]: Without dead ends: 1234 [2022-01-11 06:05:21,262 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 06:05:21,267 INFO L933 BasicCegarLoop]: 1011 mSDtfsCounter, 1001 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1011 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 06:05:21,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 1011 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:21,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-11 06:05:21,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2022-01-11 06:05:21,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1232 states have (on average 1.474025974025974) internal successors, (1816), 1233 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states 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 06:05:21,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1816 transitions. [2022-01-11 06:05:21,298 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1816 transitions. Word has length 98 [2022-01-11 06:05:21,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:21,299 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1816 transitions. [2022-01-11 06:05:21,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1816 transitions. [2022-01-11 06:05:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:05:21,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:21,300 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] [2022-01-11 06:05:21,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:05:21,300 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:21,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:21,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1797677442, now seen corresponding path program 1 times [2022-01-11 06:05:21,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:21,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007845302] [2022-01-11 06:05:21,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:21,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:21,336 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 06:05:21,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:21,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007845302] [2022-01-11 06:05:21,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007845302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:21,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:21,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:21,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450541745] [2022-01-11 06:05:21,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:21,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:21,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:21,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:21,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:21,338 INFO L87 Difference]: Start difference. First operand 1234 states and 1816 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:21,376 INFO L93 Difference]: Finished difference Result 2451 states and 3607 transitions. [2022-01-11 06:05:21,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:21,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:05:21,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:21,380 INFO L225 Difference]: With dead ends: 2451 [2022-01-11 06:05:21,380 INFO L226 Difference]: Without dead ends: 1234 [2022-01-11 06:05:21,382 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 06:05:21,382 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 995 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1006 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 06:05:21,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 1006 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:21,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-11 06:05:21,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2022-01-11 06:05:21,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1232 states have (on average 1.4675324675324675) internal successors, (1808), 1233 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states 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 06:05:21,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1808 transitions. [2022-01-11 06:05:21,422 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1808 transitions. Word has length 98 [2022-01-11 06:05:21,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:21,423 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1808 transitions. [2022-01-11 06:05:21,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1808 transitions. [2022-01-11 06:05:21,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:05:21,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:21,428 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] [2022-01-11 06:05:21,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:05:21,428 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:21,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:21,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1203459486, now seen corresponding path program 1 times [2022-01-11 06:05:21,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:21,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853635519] [2022-01-11 06:05:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:21,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:21,475 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 06:05:21,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:21,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853635519] [2022-01-11 06:05:21,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853635519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:21,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:21,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:21,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10077444] [2022-01-11 06:05:21,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:21,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:21,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:21,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:21,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:21,477 INFO L87 Difference]: Start difference. First operand 1234 states and 1808 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:21,528 INFO L93 Difference]: Finished difference Result 2450 states and 3590 transitions. [2022-01-11 06:05:21,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:21,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:05:21,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:21,532 INFO L225 Difference]: With dead ends: 2450 [2022-01-11 06:05:21,532 INFO L226 Difference]: Without dead ends: 1234 [2022-01-11 06:05:21,534 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 06:05:21,535 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 989 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1001 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 06:05:21,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 1001 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-11 06:05:21,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2022-01-11 06:05:21,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1232 states have (on average 1.4610389610389611) internal successors, (1800), 1233 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 06:05:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1800 transitions. [2022-01-11 06:05:21,585 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1800 transitions. Word has length 98 [2022-01-11 06:05:21,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:21,585 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1800 transitions. [2022-01-11 06:05:21,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1800 transitions. [2022-01-11 06:05:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:05:21,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:21,586 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] [2022-01-11 06:05:21,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:05:21,586 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:21,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:21,587 INFO L85 PathProgramCache]: Analyzing trace with hash 607533694, now seen corresponding path program 1 times [2022-01-11 06:05:21,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:21,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855528732] [2022-01-11 06:05:21,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:21,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:21,628 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 06:05:21,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:21,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855528732] [2022-01-11 06:05:21,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855528732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:21,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:21,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:21,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791142015] [2022-01-11 06:05:21,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:21,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:21,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:21,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:21,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:21,629 INFO L87 Difference]: Start difference. First operand 1234 states and 1800 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:21,677 INFO L93 Difference]: Finished difference Result 2449 states and 3573 transitions. [2022-01-11 06:05:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:21,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:05:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:21,681 INFO L225 Difference]: With dead ends: 2449 [2022-01-11 06:05:21,681 INFO L226 Difference]: Without dead ends: 1234 [2022-01-11 06:05:21,683 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 06:05:21,684 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 983 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 996 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 06:05:21,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 996 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:21,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-11 06:05:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2022-01-11 06:05:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1232 states have (on average 1.4545454545454546) internal successors, (1792), 1233 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 06:05:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1792 transitions. [2022-01-11 06:05:21,734 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1792 transitions. Word has length 98 [2022-01-11 06:05:21,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:21,736 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1792 transitions. [2022-01-11 06:05:21,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1792 transitions. [2022-01-11 06:05:21,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:05:21,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:21,736 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] [2022-01-11 06:05:21,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:05:21,737 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:21,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:21,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1281046942, now seen corresponding path program 1 times [2022-01-11 06:05:21,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:21,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955970853] [2022-01-11 06:05:21,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:21,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:21,770 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 06:05:21,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:21,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955970853] [2022-01-11 06:05:21,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955970853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:21,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:21,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:21,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487311657] [2022-01-11 06:05:21,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:21,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:21,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:21,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:21,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:21,773 INFO L87 Difference]: Start difference. First operand 1234 states and 1792 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:21,851 INFO L93 Difference]: Finished difference Result 2447 states and 3554 transitions. [2022-01-11 06:05:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:21,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:05:21,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:21,855 INFO L225 Difference]: With dead ends: 2447 [2022-01-11 06:05:21,856 INFO L226 Difference]: Without dead ends: 1234 [2022-01-11 06:05:21,857 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 06:05:21,858 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 895 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1041 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 06:05:21,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 1041 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:21,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-11 06:05:21,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2022-01-11 06:05:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1232 states have (on average 1.4350649350649352) internal successors, (1768), 1233 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states 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 06:05:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1768 transitions. [2022-01-11 06:05:21,908 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1768 transitions. Word has length 98 [2022-01-11 06:05:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:21,908 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1768 transitions. [2022-01-11 06:05:21,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1768 transitions. [2022-01-11 06:05:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:05:21,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:21,909 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] [2022-01-11 06:05:21,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:05:21,909 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:21,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:21,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1133051779, now seen corresponding path program 1 times [2022-01-11 06:05:21,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:21,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522981404] [2022-01-11 06:05:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:21,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:21,936 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 06:05:21,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:21,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522981404] [2022-01-11 06:05:21,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522981404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:21,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:21,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:21,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257127419] [2022-01-11 06:05:21,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:21,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:21,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:21,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:21,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:21,938 INFO L87 Difference]: Start difference. First operand 1234 states and 1768 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:22,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:22,016 INFO L93 Difference]: Finished difference Result 2446 states and 3505 transitions. [2022-01-11 06:05:22,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:22,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:05:22,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:22,020 INFO L225 Difference]: With dead ends: 2446 [2022-01-11 06:05:22,020 INFO L226 Difference]: Without dead ends: 1234 [2022-01-11 06:05:22,021 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 06:05:22,022 INFO L933 BasicCegarLoop]: 959 mSDtfsCounter, 881 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1026 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 06:05:22,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 1026 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:22,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-11 06:05:22,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2022-01-11 06:05:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1232 states have (on average 1.4155844155844155) internal successors, (1744), 1233 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states 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 06:05:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1744 transitions. [2022-01-11 06:05:22,073 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1744 transitions. Word has length 98 [2022-01-11 06:05:22,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:22,073 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1744 transitions. [2022-01-11 06:05:22,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1744 transitions. [2022-01-11 06:05:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:05:22,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:22,074 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] [2022-01-11 06:05:22,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:05:22,075 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:22,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:22,075 INFO L85 PathProgramCache]: Analyzing trace with hash -814264228, now seen corresponding path program 1 times [2022-01-11 06:05:22,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:22,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770292194] [2022-01-11 06:05:22,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:22,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:22,101 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 06:05:22,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:22,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770292194] [2022-01-11 06:05:22,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770292194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:22,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:22,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:22,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497640815] [2022-01-11 06:05:22,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:22,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:22,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:22,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:22,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:22,103 INFO L87 Difference]: Start difference. First operand 1234 states and 1744 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:22,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:22,170 INFO L93 Difference]: Finished difference Result 2445 states and 3456 transitions. [2022-01-11 06:05:22,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:22,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:05:22,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:22,174 INFO L225 Difference]: With dead ends: 2445 [2022-01-11 06:05:22,174 INFO L226 Difference]: Without dead ends: 1234 [2022-01-11 06:05:22,176 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 06:05:22,176 INFO L933 BasicCegarLoop]: 945 mSDtfsCounter, 867 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1011 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 06:05:22,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 1011 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:22,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-11 06:05:22,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2022-01-11 06:05:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1232 states have (on average 1.396103896103896) internal successors, (1720), 1233 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states 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 06:05:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1720 transitions. [2022-01-11 06:05:22,216 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1720 transitions. Word has length 98 [2022-01-11 06:05:22,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:22,217 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1720 transitions. [2022-01-11 06:05:22,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:22,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1720 transitions. [2022-01-11 06:05:22,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:05:22,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:22,217 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] [2022-01-11 06:05:22,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:05:22,218 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:22,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash -937114181, now seen corresponding path program 1 times [2022-01-11 06:05:22,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:22,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447909873] [2022-01-11 06:05:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:22,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:22,241 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 06:05:22,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:22,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447909873] [2022-01-11 06:05:22,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447909873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:22,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:22,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:22,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215607413] [2022-01-11 06:05:22,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:22,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:22,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:22,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:22,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:22,242 INFO L87 Difference]: Start difference. First operand 1234 states and 1720 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:22,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:22,305 INFO L93 Difference]: Finished difference Result 2444 states and 3407 transitions. [2022-01-11 06:05:22,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:22,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:05:22,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:22,309 INFO L225 Difference]: With dead ends: 2444 [2022-01-11 06:05:22,310 INFO L226 Difference]: Without dead ends: 1234 [2022-01-11 06:05:22,311 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 06:05:22,312 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 853 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 996 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 06:05:22,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 996 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:22,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-11 06:05:22,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2022-01-11 06:05:22,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1232 states have (on average 1.3766233766233766) internal successors, (1696), 1233 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states 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 06:05:22,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1696 transitions. [2022-01-11 06:05:22,378 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1696 transitions. Word has length 98 [2022-01-11 06:05:22,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:22,378 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1696 transitions. [2022-01-11 06:05:22,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:22,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1696 transitions. [2022-01-11 06:05:22,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:05:22,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:22,379 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] [2022-01-11 06:05:22,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:05:22,379 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:22,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:22,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1462889446, now seen corresponding path program 1 times [2022-01-11 06:05:22,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:22,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148386331] [2022-01-11 06:05:22,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:22,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:22,402 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 06:05:22,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:22,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148386331] [2022-01-11 06:05:22,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148386331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:22,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:22,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:22,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095259805] [2022-01-11 06:05:22,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:22,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:22,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:22,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:22,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:22,404 INFO L87 Difference]: Start difference. First operand 1234 states and 1696 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:22,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:22,470 INFO L93 Difference]: Finished difference Result 2443 states and 3358 transitions. [2022-01-11 06:05:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:22,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:05:22,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:22,474 INFO L225 Difference]: With dead ends: 2443 [2022-01-11 06:05:22,474 INFO L226 Difference]: Without dead ends: 1234 [2022-01-11 06:05:22,475 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 06:05:22,476 INFO L933 BasicCegarLoop]: 917 mSDtfsCounter, 839 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 981 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 06:05:22,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 981 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:22,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-11 06:05:22,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2022-01-11 06:05:22,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1232 states have (on average 1.3571428571428572) internal successors, (1672), 1233 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states 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 06:05:22,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1672 transitions. [2022-01-11 06:05:22,520 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1672 transitions. Word has length 98 [2022-01-11 06:05:22,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:22,521 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1672 transitions. [2022-01-11 06:05:22,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:22,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1672 transitions. [2022-01-11 06:05:22,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:05:22,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:22,521 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] [2022-01-11 06:05:22,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:05:22,522 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:22,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:22,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1321531385, now seen corresponding path program 1 times [2022-01-11 06:05:22,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:22,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711758666] [2022-01-11 06:05:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:22,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:22,559 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 06:05:22,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:22,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711758666] [2022-01-11 06:05:22,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711758666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:22,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:22,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:22,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794179639] [2022-01-11 06:05:22,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:22,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:22,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:22,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:22,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:22,561 INFO L87 Difference]: Start difference. First operand 1234 states and 1672 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:22,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:22,625 INFO L93 Difference]: Finished difference Result 2442 states and 3309 transitions. [2022-01-11 06:05:22,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:22,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:05:22,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:22,630 INFO L225 Difference]: With dead ends: 2442 [2022-01-11 06:05:22,630 INFO L226 Difference]: Without dead ends: 1234 [2022-01-11 06:05:22,633 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 06:05:22,633 INFO L933 BasicCegarLoop]: 903 mSDtfsCounter, 825 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 966 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 06:05:22,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [825 Valid, 966 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:22,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-11 06:05:22,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2022-01-11 06:05:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1232 states have (on average 1.3376623376623376) internal successors, (1648), 1233 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 06:05:22,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1648 transitions. [2022-01-11 06:05:22,681 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1648 transitions. Word has length 98 [2022-01-11 06:05:22,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:22,681 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1648 transitions. [2022-01-11 06:05:22,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:22,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1648 transitions. [2022-01-11 06:05:22,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:05:22,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:22,682 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] [2022-01-11 06:05:22,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:05:22,682 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:22,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:22,683 INFO L85 PathProgramCache]: Analyzing trace with hash -663026472, now seen corresponding path program 1 times [2022-01-11 06:05:22,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:22,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027614243] [2022-01-11 06:05:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:22,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:22,712 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 06:05:22,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:22,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027614243] [2022-01-11 06:05:22,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027614243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:22,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:22,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:22,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345967631] [2022-01-11 06:05:22,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:22,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:22,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:22,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:22,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:22,714 INFO L87 Difference]: Start difference. First operand 1234 states and 1648 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:22,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:22,836 INFO L93 Difference]: Finished difference Result 3545 states and 4724 transitions. [2022-01-11 06:05:22,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:22,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:05:22,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:22,842 INFO L225 Difference]: With dead ends: 3545 [2022-01-11 06:05:22,842 INFO L226 Difference]: Without dead ends: 2339 [2022-01-11 06:05:22,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:22,844 INFO L933 BasicCegarLoop]: 903 mSDtfsCounter, 841 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1682 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 06:05:22,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 1682 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:22,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2022-01-11 06:05:22,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2243. [2022-01-11 06:05:22,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2241 states have (on average 1.324854975457385) internal successors, (2969), 2242 states have internal predecessors, (2969), 0 states have call successors, (0), 0 states 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 06:05:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 2969 transitions. [2022-01-11 06:05:22,928 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 2969 transitions. Word has length 98 [2022-01-11 06:05:22,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:22,929 INFO L470 AbstractCegarLoop]: Abstraction has 2243 states and 2969 transitions. [2022-01-11 06:05:22,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:22,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 2969 transitions. [2022-01-11 06:05:22,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 06:05:22,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:22,930 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] [2022-01-11 06:05:22,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:05:22,931 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:22,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:22,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1775235965, now seen corresponding path program 1 times [2022-01-11 06:05:22,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:22,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689337962] [2022-01-11 06:05:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:22,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:22,982 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 06:05:22,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:22,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689337962] [2022-01-11 06:05:22,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689337962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:22,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:22,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:05:22,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456814187] [2022-01-11 06:05:22,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:22,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:05:22,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:22,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:05:22,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:05:22,983 INFO L87 Difference]: Start difference. First operand 2243 states and 2969 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:23,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:23,236 INFO L93 Difference]: Finished difference Result 6380 states and 8507 transitions. [2022-01-11 06:05:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:05:23,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-01-11 06:05:23,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:23,248 INFO L225 Difference]: With dead ends: 6380 [2022-01-11 06:05:23,248 INFO L226 Difference]: Without dead ends: 4211 [2022-01-11 06:05:23,253 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 06:05:23,255 INFO L933 BasicCegarLoop]: 882 mSDtfsCounter, 1897 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 3309 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 06:05:23,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1897 Valid, 3309 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:05:23,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4211 states. [2022-01-11 06:05:23,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4211 to 2255. [2022-01-11 06:05:23,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2253 states have (on average 1.3102529960053262) internal successors, (2952), 2254 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states 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 06:05:23,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2952 transitions. [2022-01-11 06:05:23,363 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2952 transitions. Word has length 159 [2022-01-11 06:05:23,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:23,363 INFO L470 AbstractCegarLoop]: Abstraction has 2255 states and 2952 transitions. [2022-01-11 06:05:23,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:23,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2952 transitions. [2022-01-11 06:05:23,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 06:05:23,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:23,365 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] [2022-01-11 06:05:23,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:05:23,366 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:23,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:23,366 INFO L85 PathProgramCache]: Analyzing trace with hash -277070469, now seen corresponding path program 1 times [2022-01-11 06:05:23,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:23,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019883579] [2022-01-11 06:05:23,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:23,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:23,411 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 06:05:23,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:23,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019883579] [2022-01-11 06:05:23,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019883579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:23,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:23,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:23,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163744360] [2022-01-11 06:05:23,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:23,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:23,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:23,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:23,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:23,414 INFO L87 Difference]: Start difference. First operand 2255 states and 2952 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:23,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:23,537 INFO L93 Difference]: Finished difference Result 4490 states and 5876 transitions. [2022-01-11 06:05:23,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:23,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-01-11 06:05:23,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:23,543 INFO L225 Difference]: With dead ends: 4490 [2022-01-11 06:05:23,543 INFO L226 Difference]: Without dead ends: 2255 [2022-01-11 06:05:23,545 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 06:05:23,546 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 751 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:23,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 940 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:23,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2022-01-11 06:05:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2255. [2022-01-11 06:05:23,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2253 states have (on average 1.2973812694185531) internal successors, (2923), 2254 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states 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 06:05:23,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2923 transitions. [2022-01-11 06:05:23,659 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2923 transitions. Word has length 159 [2022-01-11 06:05:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:23,659 INFO L470 AbstractCegarLoop]: Abstraction has 2255 states and 2923 transitions. [2022-01-11 06:05:23,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2923 transitions. [2022-01-11 06:05:23,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 06:05:23,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:23,662 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] [2022-01-11 06:05:23,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:05:23,662 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1762126020, now seen corresponding path program 1 times [2022-01-11 06:05:23,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:23,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270122936] [2022-01-11 06:05:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:23,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:23,707 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 06:05:23,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:23,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270122936] [2022-01-11 06:05:23,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270122936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:23,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:23,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:23,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828932024] [2022-01-11 06:05:23,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:23,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:23,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:23,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:23,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:23,709 INFO L87 Difference]: Start difference. First operand 2255 states and 2923 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:23,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:23,961 INFO L93 Difference]: Finished difference Result 6570 states and 8534 transitions. [2022-01-11 06:05:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:23,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-01-11 06:05:23,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:23,982 INFO L225 Difference]: With dead ends: 6570 [2022-01-11 06:05:23,982 INFO L226 Difference]: Without dead ends: 4349 [2022-01-11 06:05:23,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:23,986 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 786 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1638 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 06:05:23,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 1638 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:23,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4349 states. [2022-01-11 06:05:24,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4349 to 4173. [2022-01-11 06:05:24,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4173 states, 4171 states have (on average 1.2953728122752337) internal successors, (5403), 4172 states have internal predecessors, (5403), 0 states have call successors, (0), 0 states 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 06:05:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4173 states to 4173 states and 5403 transitions. [2022-01-11 06:05:24,214 INFO L78 Accepts]: Start accepts. Automaton has 4173 states and 5403 transitions. Word has length 159 [2022-01-11 06:05:24,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:24,215 INFO L470 AbstractCegarLoop]: Abstraction has 4173 states and 5403 transitions. [2022-01-11 06:05:24,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:24,215 INFO L276 IsEmpty]: Start isEmpty. Operand 4173 states and 5403 transitions. [2022-01-11 06:05:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 06:05:24,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:24,217 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] [2022-01-11 06:05:24,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:05:24,217 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:24,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:24,218 INFO L85 PathProgramCache]: Analyzing trace with hash -355003235, now seen corresponding path program 1 times [2022-01-11 06:05:24,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:24,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691839435] [2022-01-11 06:05:24,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:24,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:24,275 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 06:05:24,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:24,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691839435] [2022-01-11 06:05:24,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691839435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:24,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:24,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:24,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652004448] [2022-01-11 06:05:24,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:24,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:24,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:24,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:24,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:24,277 INFO L87 Difference]: Start difference. First operand 4173 states and 5403 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:24,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:24,682 INFO L93 Difference]: Finished difference Result 12222 states and 15738 transitions. [2022-01-11 06:05:24,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:24,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-01-11 06:05:24,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:24,697 INFO L225 Difference]: With dead ends: 12222 [2022-01-11 06:05:24,697 INFO L226 Difference]: Without dead ends: 8138 [2022-01-11 06:05:24,703 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 06:05:24,704 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 786 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1921 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 06:05:24,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 1921 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:24,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8138 states. [2022-01-11 06:05:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8138 to 7978. [2022-01-11 06:05:25,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7978 states, 7976 states have (on average 1.2803410230692076) internal successors, (10212), 7977 states have internal predecessors, (10212), 0 states have call successors, (0), 0 states 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 06:05:25,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 10212 transitions. [2022-01-11 06:05:25,137 INFO L78 Accepts]: Start accepts. Automaton has 7978 states and 10212 transitions. Word has length 159 [2022-01-11 06:05:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:25,137 INFO L470 AbstractCegarLoop]: Abstraction has 7978 states and 10212 transitions. [2022-01-11 06:05:25,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:25,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7978 states and 10212 transitions. [2022-01-11 06:05:25,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 06:05:25,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:25,142 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] [2022-01-11 06:05:25,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 06:05:25,143 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:25,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:25,143 INFO L85 PathProgramCache]: Analyzing trace with hash 108532251, now seen corresponding path program 1 times [2022-01-11 06:05:25,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:25,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717159767] [2022-01-11 06:05:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:25,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:25,173 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 06:05:25,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:25,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717159767] [2022-01-11 06:05:25,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717159767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:25,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:25,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:25,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538669989] [2022-01-11 06:05:25,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:25,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:25,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:25,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:25,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:25,176 INFO L87 Difference]: Start difference. First operand 7978 states and 10212 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:25,606 INFO L93 Difference]: Finished difference Result 15835 states and 20278 transitions. [2022-01-11 06:05:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:25,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-01-11 06:05:25,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:25,622 INFO L225 Difference]: With dead ends: 15835 [2022-01-11 06:05:25,623 INFO L226 Difference]: Without dead ends: 7895 [2022-01-11 06:05:25,635 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 06:05:25,636 INFO L933 BasicCegarLoop]: 888 mSDtfsCounter, 884 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 888 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 06:05:25,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 888 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:25,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7895 states. [2022-01-11 06:05:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7895 to 7895. [2022-01-11 06:05:26,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7895 states, 7893 states have (on average 1.2811351830736095) internal successors, (10112), 7894 states have internal predecessors, (10112), 0 states have call successors, (0), 0 states 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 06:05:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7895 states to 7895 states and 10112 transitions. [2022-01-11 06:05:26,095 INFO L78 Accepts]: Start accepts. Automaton has 7895 states and 10112 transitions. Word has length 159 [2022-01-11 06:05:26,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:26,096 INFO L470 AbstractCegarLoop]: Abstraction has 7895 states and 10112 transitions. [2022-01-11 06:05:26,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:26,096 INFO L276 IsEmpty]: Start isEmpty. Operand 7895 states and 10112 transitions. [2022-01-11 06:05:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 06:05:26,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:26,100 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 06:05:26,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 06:05:26,100 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:26,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:26,101 INFO L85 PathProgramCache]: Analyzing trace with hash -70771395, now seen corresponding path program 1 times [2022-01-11 06:05:26,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:26,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933283206] [2022-01-11 06:05:26,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:26,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:26,166 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 06:05:26,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:26,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933283206] [2022-01-11 06:05:26,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933283206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:26,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:26,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:26,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878646234] [2022-01-11 06:05:26,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:26,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:26,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:26,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:26,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:26,170 INFO L87 Difference]: Start difference. First operand 7895 states and 10112 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 06:05:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:26,794 INFO L93 Difference]: Finished difference Result 23109 states and 29517 transitions. [2022-01-11 06:05:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:26,794 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 06:05:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:26,817 INFO L225 Difference]: With dead ends: 23109 [2022-01-11 06:05:26,817 INFO L226 Difference]: Without dead ends: 15303 [2022-01-11 06:05:26,829 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 06:05:26,830 INFO L933 BasicCegarLoop]: 1098 mSDtfsCounter, 785 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1957 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 06:05:26,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 1957 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:26,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15303 states. [2022-01-11 06:05:27,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15303 to 14787. [2022-01-11 06:05:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14787 states, 14785 states have (on average 1.2735204599256003) internal successors, (18829), 14786 states have internal predecessors, (18829), 0 states have call successors, (0), 0 states 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 06:05:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14787 states to 14787 states and 18829 transitions. [2022-01-11 06:05:27,553 INFO L78 Accepts]: Start accepts. Automaton has 14787 states and 18829 transitions. Word has length 160 [2022-01-11 06:05:27,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:27,553 INFO L470 AbstractCegarLoop]: Abstraction has 14787 states and 18829 transitions. [2022-01-11 06:05:27,554 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 06:05:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 14787 states and 18829 transitions. [2022-01-11 06:05:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 06:05:27,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:27,561 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 06:05:27,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 06:05:27,561 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:27,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:27,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1413951458, now seen corresponding path program 1 times [2022-01-11 06:05:27,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:27,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513425968] [2022-01-11 06:05:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:27,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:27,587 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 06:05:27,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:27,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513425968] [2022-01-11 06:05:27,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513425968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:27,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:27,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:27,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641615195] [2022-01-11 06:05:27,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:27,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:27,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:27,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:27,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:27,589 INFO L87 Difference]: Start difference. First operand 14787 states and 18829 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 06:05:28,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:28,310 INFO L93 Difference]: Finished difference Result 29447 states and 37506 transitions. [2022-01-11 06:05:28,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:28,310 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 06:05:28,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:28,341 INFO L225 Difference]: With dead ends: 29447 [2022-01-11 06:05:28,341 INFO L226 Difference]: Without dead ends: 14705 [2022-01-11 06:05:28,364 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 06:05:28,365 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 882 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 887 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 06:05:28,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 887 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:28,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14705 states. [2022-01-11 06:05:29,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14705 to 14705. [2022-01-11 06:05:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14705 states, 14703 states have (on average 1.273957695708359) internal successors, (18731), 14704 states have internal predecessors, (18731), 0 states have call successors, (0), 0 states 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 06:05:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14705 states to 14705 states and 18731 transitions. [2022-01-11 06:05:29,050 INFO L78 Accepts]: Start accepts. Automaton has 14705 states and 18731 transitions. Word has length 160 [2022-01-11 06:05:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:29,051 INFO L470 AbstractCegarLoop]: Abstraction has 14705 states and 18731 transitions. [2022-01-11 06:05:29,051 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 06:05:29,051 INFO L276 IsEmpty]: Start isEmpty. Operand 14705 states and 18731 transitions. [2022-01-11 06:05:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-11 06:05:29,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:29,058 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 06:05:29,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 06:05:29,058 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:29,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1277906294, now seen corresponding path program 1 times [2022-01-11 06:05:29,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:29,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246039569] [2022-01-11 06:05:29,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:29,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:29,099 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 06:05:29,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:29,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246039569] [2022-01-11 06:05:29,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246039569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:29,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:29,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:29,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356626185] [2022-01-11 06:05:29,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:29,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:29,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:29,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:29,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:29,100 INFO L87 Difference]: Start difference. First operand 14705 states and 18731 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 06:05:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:30,140 INFO L93 Difference]: Finished difference Result 42954 states and 54622 transitions. [2022-01-11 06:05:30,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:30,141 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 06:05:30,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:30,270 INFO L225 Difference]: With dead ends: 42954 [2022-01-11 06:05:30,270 INFO L226 Difference]: Without dead ends: 28338 [2022-01-11 06:05:30,286 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 06:05:30,287 INFO L933 BasicCegarLoop]: 1098 mSDtfsCounter, 785 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1955 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 06:05:30,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 1955 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:30,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28338 states. [2022-01-11 06:05:31,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28338 to 27534. [2022-01-11 06:05:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27534 states, 27532 states have (on average 1.2692866482638385) internal successors, (34946), 27533 states have internal predecessors, (34946), 0 states have call successors, (0), 0 states 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 06:05:31,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27534 states to 27534 states and 34946 transitions. [2022-01-11 06:05:31,547 INFO L78 Accepts]: Start accepts. Automaton has 27534 states and 34946 transitions. Word has length 161 [2022-01-11 06:05:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:31,548 INFO L470 AbstractCegarLoop]: Abstraction has 27534 states and 34946 transitions. [2022-01-11 06:05:31,548 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 06:05:31,548 INFO L276 IsEmpty]: Start isEmpty. Operand 27534 states and 34946 transitions. [2022-01-11 06:05:31,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-11 06:05:31,564 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:31,565 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 06:05:31,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 06:05:31,565 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:31,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1223789401, now seen corresponding path program 1 times [2022-01-11 06:05:31,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:31,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504435220] [2022-01-11 06:05:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:31,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:31,591 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 06:05:31,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:31,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504435220] [2022-01-11 06:05:31,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504435220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:31,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:31,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:31,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889005720] [2022-01-11 06:05:31,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:31,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:31,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:31,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:31,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:31,593 INFO L87 Difference]: Start difference. First operand 27534 states and 34946 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 06:05:32,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:32,913 INFO L93 Difference]: Finished difference Result 54935 states and 69734 transitions. [2022-01-11 06:05:32,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:32,913 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 06:05:32,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:32,970 INFO L225 Difference]: With dead ends: 54935 [2022-01-11 06:05:32,971 INFO L226 Difference]: Without dead ends: 27453 [2022-01-11 06:05:33,005 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 06:05:33,006 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 880 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 886 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 06:05:33,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [880 Valid, 886 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:33,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27453 states. [2022-01-11 06:05:34,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27453 to 27453. [2022-01-11 06:05:34,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27453 states, 27451 states have (on average 1.2695348074751376) internal successors, (34850), 27452 states have internal predecessors, (34850), 0 states have call successors, (0), 0 states 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 06:05:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27453 states to 27453 states and 34850 transitions. [2022-01-11 06:05:34,261 INFO L78 Accepts]: Start accepts. Automaton has 27453 states and 34850 transitions. Word has length 161 [2022-01-11 06:05:34,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:34,261 INFO L470 AbstractCegarLoop]: Abstraction has 27453 states and 34850 transitions. [2022-01-11 06:05:34,262 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 06:05:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 27453 states and 34850 transitions. [2022-01-11 06:05:34,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 06:05:34,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:34,272 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 06:05:34,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 06:05:34,273 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:34,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:34,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1243776782, now seen corresponding path program 1 times [2022-01-11 06:05:34,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:34,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496593402] [2022-01-11 06:05:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:34,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:34,324 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 06:05:34,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:34,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496593402] [2022-01-11 06:05:34,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496593402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:34,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:34,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:34,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216704649] [2022-01-11 06:05:34,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:34,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:34,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:34,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:34,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:34,327 INFO L87 Difference]: Start difference. First operand 27453 states and 34850 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 06:05:36,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:36,570 INFO L93 Difference]: Finished difference Result 79781 states and 101139 transitions. [2022-01-11 06:05:36,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:36,571 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 06:05:36,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:36,671 INFO L225 Difference]: With dead ends: 79781 [2022-01-11 06:05:36,671 INFO L226 Difference]: Without dead ends: 52417 [2022-01-11 06:05:36,708 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 06:05:36,708 INFO L933 BasicCegarLoop]: 1080 mSDtfsCounter, 785 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1935 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 06:05:36,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 1935 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:36,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52417 states. [2022-01-11 06:05:39,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52417 to 51261. [2022-01-11 06:05:39,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51261 states, 51259 states have (on average 1.2660215766987262) internal successors, (64895), 51260 states have internal predecessors, (64895), 0 states have call successors, (0), 0 states 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 06:05:39,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51261 states to 51261 states and 64895 transitions. [2022-01-11 06:05:39,565 INFO L78 Accepts]: Start accepts. Automaton has 51261 states and 64895 transitions. Word has length 162 [2022-01-11 06:05:39,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:39,566 INFO L470 AbstractCegarLoop]: Abstraction has 51261 states and 64895 transitions. [2022-01-11 06:05:39,566 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 06:05:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 51261 states and 64895 transitions. [2022-01-11 06:05:39,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 06:05:39,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:39,583 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 06:05:39,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 06:05:39,584 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:39,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:39,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1950505873, now seen corresponding path program 1 times [2022-01-11 06:05:39,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:39,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996038906] [2022-01-11 06:05:39,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:39,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:39,606 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 06:05:39,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:39,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996038906] [2022-01-11 06:05:39,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996038906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:39,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:39,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:39,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215500960] [2022-01-11 06:05:39,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:39,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:39,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:39,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:39,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:39,607 INFO L87 Difference]: Start difference. First operand 51261 states and 64895 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 06:05:41,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:41,854 INFO L93 Difference]: Finished difference Result 102383 states and 129626 transitions. [2022-01-11 06:05:41,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:41,854 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 06:05:41,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:41,944 INFO L225 Difference]: With dead ends: 102383 [2022-01-11 06:05:41,944 INFO L226 Difference]: Without dead ends: 51181 [2022-01-11 06:05:41,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:41,986 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 878 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 885 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 06:05:41,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 885 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:42,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51181 states. [2022-01-11 06:05:44,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51181 to 51181. [2022-01-11 06:05:44,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51181 states, 51179 states have (on average 1.2661638562691728) internal successors, (64801), 51180 states have internal predecessors, (64801), 0 states have call successors, (0), 0 states 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 06:05:44,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51181 states to 51181 states and 64801 transitions. [2022-01-11 06:05:44,774 INFO L78 Accepts]: Start accepts. Automaton has 51181 states and 64801 transitions. Word has length 162 [2022-01-11 06:05:44,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:44,774 INFO L470 AbstractCegarLoop]: Abstraction has 51181 states and 64801 transitions. [2022-01-11 06:05:44,774 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 06:05:44,774 INFO L276 IsEmpty]: Start isEmpty. Operand 51181 states and 64801 transitions. [2022-01-11 06:05:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-11 06:05:44,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:44,790 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 06:05:44,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 06:05:44,790 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:44,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:44,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1259385858, now seen corresponding path program 1 times [2022-01-11 06:05:44,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:44,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653688539] [2022-01-11 06:05:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:44,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:44,828 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 06:05:44,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:44,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653688539] [2022-01-11 06:05:44,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653688539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:44,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:44,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:44,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190965510] [2022-01-11 06:05:44,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:44,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:44,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:44,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:44,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:44,830 INFO L87 Difference]: Start difference. First operand 51181 states and 64801 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 06:05:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:49,278 INFO L93 Difference]: Finished difference Result 147660 states and 186688 transitions. [2022-01-11 06:05:49,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:49,279 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 06:05:49,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:49,467 INFO L225 Difference]: With dead ends: 147660 [2022-01-11 06:05:49,467 INFO L226 Difference]: Without dead ends: 96568 [2022-01-11 06:05:49,543 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 06:05:49,545 INFO L933 BasicCegarLoop]: 1044 mSDtfsCounter, 785 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:49,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 1897 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:05:49,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96568 states. [2022-01-11 06:05:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96568 to 94772. [2022-01-11 06:05:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94772 states, 94770 states have (on average 1.2626358552284478) internal successors, (119660), 94771 states have internal predecessors, (119660), 0 states have call successors, (0), 0 states 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 06:05:54,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94772 states to 94772 states and 119660 transitions. [2022-01-11 06:05:54,612 INFO L78 Accepts]: Start accepts. Automaton has 94772 states and 119660 transitions. Word has length 163 [2022-01-11 06:05:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:54,613 INFO L470 AbstractCegarLoop]: Abstraction has 94772 states and 119660 transitions. [2022-01-11 06:05:54,613 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 06:05:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 94772 states and 119660 transitions. [2022-01-11 06:05:54,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-11 06:05:54,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:54,640 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 06:05:54,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 06:05:54,641 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:54,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:54,641 INFO L85 PathProgramCache]: Analyzing trace with hash -213511269, now seen corresponding path program 1 times [2022-01-11 06:05:54,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:54,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062533385] [2022-01-11 06:05:54,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:54,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:54,664 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 06:05:54,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:54,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062533385] [2022-01-11 06:05:54,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062533385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:54,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:54,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:54,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887597037] [2022-01-11 06:05:54,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:54,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:54,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:54,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:54,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:54,665 INFO L87 Difference]: Start difference. First operand 94772 states and 119660 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 06:05:59,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:59,496 INFO L93 Difference]: Finished difference Result 189399 states and 239150 transitions. [2022-01-11 06:05:59,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:59,496 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 06:05:59,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:59,654 INFO L225 Difference]: With dead ends: 189399 [2022-01-11 06:05:59,654 INFO L226 Difference]: Without dead ends: 94693 [2022-01-11 06:05:59,819 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 06:05:59,820 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 876 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 884 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 06:05:59,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 884 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:59,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94693 states. [2022-01-11 06:06:04,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94693 to 94693. [2022-01-11 06:06:04,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94693 states, 94691 states have (on average 1.2627176817226557) internal successors, (119568), 94692 states have internal predecessors, (119568), 0 states have call successors, (0), 0 states 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 06:06:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94693 states to 94693 states and 119568 transitions. [2022-01-11 06:06:04,751 INFO L78 Accepts]: Start accepts. Automaton has 94693 states and 119568 transitions. Word has length 163 [2022-01-11 06:06:04,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:04,751 INFO L470 AbstractCegarLoop]: Abstraction has 94693 states and 119568 transitions. [2022-01-11 06:06:04,751 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 06:06:04,752 INFO L276 IsEmpty]: Start isEmpty. Operand 94693 states and 119568 transitions. [2022-01-11 06:06:04,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 06:06:04,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:04,777 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 06:06:04,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 06:06:04,778 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:04,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:04,778 INFO L85 PathProgramCache]: Analyzing trace with hash 200496150, now seen corresponding path program 1 times [2022-01-11 06:06:04,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:04,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276640390] [2022-01-11 06:06:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:04,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:04,817 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 06:06:04,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:04,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276640390] [2022-01-11 06:06:04,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276640390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:04,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:04,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:06:04,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608155175] [2022-01-11 06:06:04,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:04,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:04,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:04,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:04,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:04,819 INFO L87 Difference]: Start difference. First operand 94693 states and 119568 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 06:06:13,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:13,076 INFO L93 Difference]: Finished difference Result 269643 states and 340285 transitions. [2022-01-11 06:06:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:13,077 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 06:06:13,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:13,516 INFO L225 Difference]: With dead ends: 269643 [2022-01-11 06:06:13,516 INFO L226 Difference]: Without dead ends: 175039 [2022-01-11 06:06:13,599 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 06:06:13,600 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 661 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:13,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 1872 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175039 states.