/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/combinations/Problem05_label43+token_ring.13.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 07:06:18,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 07:06:18,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 07:06:18,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 07:06:18,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 07:06:18,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 07:06:18,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 07:06:18,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 07:06:18,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 07:06:18,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 07:06:18,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 07:06:18,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 07:06:18,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 07:06:18,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 07:06:18,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 07:06:18,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 07:06:18,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 07:06:18,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 07:06:18,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 07:06:18,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 07:06:18,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 07:06:18,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 07:06:18,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 07:06:18,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 07:06:18,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 07:06:18,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 07:06:18,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 07:06:18,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 07:06:18,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 07:06:18,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 07:06:18,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 07:06:18,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 07:06:18,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 07:06:18,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 07:06:18,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 07:06:18,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 07:06:18,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 07:06:18,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 07:06:18,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 07:06:18,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 07:06:18,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 07:06:18,881 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 07:06:18,903 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 07:06:18,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 07:06:18,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 07:06:18,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 07:06:18,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 07:06:18,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 07:06:18,904 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 07:06:18,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 07:06:18,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 07:06:18,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 07:06:18,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 07:06:18,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 07:06:18,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 07:06:18,905 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 07:06:18,905 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 07:06:18,905 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 07:06:18,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 07:06:18,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 07:06:18,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 07:06:18,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 07:06:18,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 07:06:18,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:06:18,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 07:06:18,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 07:06:18,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 07:06:18,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 07:06:18,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 07:06:18,909 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 07:06:18,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 07:06:18,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 07:06:18,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 07:06:18,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 07:06:18,910 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 07:06:18,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 07:06:19,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 07:06:19,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 07:06:19,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 07:06:19,114 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 07:06:19,115 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 07:06:19,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.13.cil-2.c [2022-01-11 07:06:19,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/989f67133/3dcf8876ef9a42beb54a9bc3f573ed4d/FLAG6539d91b3 [2022-01-11 07:06:19,851 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 07:06:19,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.13.cil-2.c [2022-01-11 07:06:19,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/989f67133/3dcf8876ef9a42beb54a9bc3f573ed4d/FLAG6539d91b3 [2022-01-11 07:06:19,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/989f67133/3dcf8876ef9a42beb54a9bc3f573ed4d [2022-01-11 07:06:19,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 07:06:19,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 07:06:19,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 07:06:19,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 07:06:19,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 07:06:19,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:06:19" (1/1) ... [2022-01-11 07:06:19,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd1d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:06:19, skipping insertion in model container [2022-01-11 07:06:19,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:06:19" (1/1) ... [2022-01-11 07:06:19,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 07:06:20,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 07:06:21,457 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.13.cil-2.c[381679,381692] [2022-01-11 07:06:21,474 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.13.cil-2.c[383339,383352] [2022-01-11 07:06:21,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:06:21,681 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 07:06:22,319 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.13.cil-2.c[381679,381692] [2022-01-11 07:06:22,323 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.13.cil-2.c[383339,383352] [2022-01-11 07:06:22,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:06:22,402 INFO L208 MainTranslator]: Completed translation [2022-01-11 07:06:22,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:06:22 WrapperNode [2022-01-11 07:06:22,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 07:06:22,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 07:06:22,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 07:06:22,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 07:06:22,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:06:22" (1/1) ... [2022-01-11 07:06:22,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:06:22" (1/1) ... [2022-01-11 07:06:22,855 INFO L137 Inliner]: procedures = 71, calls = 80, calls flagged for inlining = 75, calls inlined = 312, statements flattened = 16988 [2022-01-11 07:06:22,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 07:06:22,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 07:06:22,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 07:06:22,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 07:06:22,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:06:22" (1/1) ... [2022-01-11 07:06:22,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:06:22" (1/1) ... [2022-01-11 07:06:22,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:06:22" (1/1) ... [2022-01-11 07:06:22,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:06:22" (1/1) ... [2022-01-11 07:06:23,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:06:22" (1/1) ... [2022-01-11 07:06:23,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:06:22" (1/1) ... [2022-01-11 07:06:23,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:06:22" (1/1) ... [2022-01-11 07:06:23,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 07:06:23,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 07:06:23,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 07:06:23,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 07:06:23,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:06:22" (1/1) ... [2022-01-11 07:06:23,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:06:23,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 07:06:23,334 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 07:06:23,352 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 07:06:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 07:06:23,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 07:06:23,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 07:06:23,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 07:06:23,484 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 07:06:23,485 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 07:06:31,306 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 07:06:31,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 07:06:31,332 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-01-11 07:06:31,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:06:31 BoogieIcfgContainer [2022-01-11 07:06:31,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 07:06:31,338 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 07:06:31,338 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 07:06:31,340 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 07:06:31,342 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:06:31" (1/1) ... [2022-01-11 07:06:32,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:06:32 BasicIcfg [2022-01-11 07:06:32,892 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 07:06:32,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 07:06:32,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 07:06:32,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 07:06:32,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 07:06:19" (1/4) ... [2022-01-11 07:06:32,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2f9176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:06:32, skipping insertion in model container [2022-01-11 07:06:32,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:06:22" (2/4) ... [2022-01-11 07:06:32,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2f9176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:06:32, skipping insertion in model container [2022-01-11 07:06:32,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:06:31" (3/4) ... [2022-01-11 07:06:32,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2f9176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 07:06:32, skipping insertion in model container [2022-01-11 07:06:32,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:06:32" (4/4) ... [2022-01-11 07:06:32,898 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.13.cil-2.cTransformedIcfg [2022-01-11 07:06:32,901 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 07:06:32,901 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 07:06:32,952 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 07:06:32,959 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 07:06:32,959 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 07:06:33,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 4208 states, 4205 states have (on average 1.6910820451843045) internal successors, (7111), 4207 states have internal predecessors, (7111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:33,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:33,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:33,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:33,149 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:33,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:33,153 INFO L85 PathProgramCache]: Analyzing trace with hash 249960507, now seen corresponding path program 1 times [2022-01-11 07:06:33,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:33,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277862101] [2022-01-11 07:06:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:33,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:33,439 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 07:06:33,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:33,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277862101] [2022-01-11 07:06:33,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277862101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:33,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:33,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:06:33,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100372504] [2022-01-11 07:06:33,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:33,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:33,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:33,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:33,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:33,489 INFO L87 Difference]: Start difference. First operand has 4208 states, 4205 states have (on average 1.6910820451843045) internal successors, (7111), 4207 states have internal predecessors, (7111), 0 states have call successors, (0), 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 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:33,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:33,794 INFO L93 Difference]: Finished difference Result 8404 states and 14199 transitions. [2022-01-11 07:06:33,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:33,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:33,825 INFO L225 Difference]: With dead ends: 8404 [2022-01-11 07:06:33,825 INFO L226 Difference]: Without dead ends: 4141 [2022-01-11 07:06:33,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:33,840 INFO L933 BasicCegarLoop]: 7014 mSDtfsCounter, 2981 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2981 SdHoareTripleChecker+Valid, 11036 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:06:33,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2981 Valid, 11036 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:33,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4141 states. [2022-01-11 07:06:33,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4141 to 4141. [2022-01-11 07:06:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4141 states, 4139 states have (on average 1.678183136023194) internal successors, (6946), 4140 states have internal predecessors, (6946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 6946 transitions. [2022-01-11 07:06:33,983 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 6946 transitions. Word has length 176 [2022-01-11 07:06:33,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:33,983 INFO L470 AbstractCegarLoop]: Abstraction has 4141 states and 6946 transitions. [2022-01-11 07:06:33,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:33,984 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 6946 transitions. [2022-01-11 07:06:33,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:33,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:33,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:33,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 07:06:33,986 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:33,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:33,987 INFO L85 PathProgramCache]: Analyzing trace with hash 682106, now seen corresponding path program 1 times [2022-01-11 07:06:33,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:33,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294738519] [2022-01-11 07:06:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:33,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:34,145 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 07:06:34,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:34,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294738519] [2022-01-11 07:06:34,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294738519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:34,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:34,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:34,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917290523] [2022-01-11 07:06:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:34,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:34,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:34,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:34,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:34,148 INFO L87 Difference]: Start difference. First operand 4141 states and 6946 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:34,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:34,349 INFO L93 Difference]: Finished difference Result 7886 states and 12459 transitions. [2022-01-11 07:06:34,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:34,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:34,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:34,393 INFO L225 Difference]: With dead ends: 7886 [2022-01-11 07:06:34,393 INFO L226 Difference]: Without dead ends: 5886 [2022-01-11 07:06:34,399 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 07:06:34,400 INFO L933 BasicCegarLoop]: 6940 mSDtfsCounter, 6778 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6778 SdHoareTripleChecker+Valid, 9635 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 07:06:34,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6778 Valid, 9635 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2022-01-11 07:06:34,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 5884. [2022-01-11 07:06:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.615096905814349) internal successors, (9500), 5883 states have internal predecessors, (9500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9500 transitions. [2022-01-11 07:06:34,628 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9500 transitions. Word has length 176 [2022-01-11 07:06:34,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:34,629 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9500 transitions. [2022-01-11 07:06:34,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:34,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9500 transitions. [2022-01-11 07:06:34,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:34,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:34,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:34,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 07:06:34,644 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:34,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2105020774, now seen corresponding path program 1 times [2022-01-11 07:06:34,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:34,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899062586] [2022-01-11 07:06:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:34,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:34,839 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 07:06:34,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:34,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899062586] [2022-01-11 07:06:34,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899062586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:34,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:34,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:34,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709296420] [2022-01-11 07:06:34,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:34,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:34,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:34,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:34,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:34,841 INFO L87 Difference]: Start difference. First operand 5884 states and 9500 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:34,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:34,965 INFO L93 Difference]: Finished difference Result 9626 states and 15007 transitions. [2022-01-11 07:06:34,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:34,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:34,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:34,981 INFO L225 Difference]: With dead ends: 9626 [2022-01-11 07:06:34,981 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:34,990 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 07:06:34,992 INFO L933 BasicCegarLoop]: 6934 mSDtfsCounter, 6918 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6918 SdHoareTripleChecker+Valid, 6934 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 07:06:34,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6918 Valid, 6934 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:35,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6137368242094525) internal successors, (9492), 5883 states have internal predecessors, (9492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9492 transitions. [2022-01-11 07:06:35,143 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9492 transitions. Word has length 176 [2022-01-11 07:06:35,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:35,143 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9492 transitions. [2022-01-11 07:06:35,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9492 transitions. [2022-01-11 07:06:35,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:35,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:35,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:35,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 07:06:35,146 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:35,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1429283962, now seen corresponding path program 1 times [2022-01-11 07:06:35,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:35,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770048865] [2022-01-11 07:06:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:35,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:35,225 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 07:06:35,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:35,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770048865] [2022-01-11 07:06:35,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770048865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:35,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:35,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:35,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286977687] [2022-01-11 07:06:35,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:35,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:35,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:35,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:35,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:35,228 INFO L87 Difference]: Start difference. First operand 5884 states and 9492 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:35,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:35,418 INFO L93 Difference]: Finished difference Result 9625 states and 14990 transitions. [2022-01-11 07:06:35,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:35,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:35,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:35,434 INFO L225 Difference]: With dead ends: 9625 [2022-01-11 07:06:35,434 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:35,439 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 07:06:35,443 INFO L933 BasicCegarLoop]: 6929 mSDtfsCounter, 6912 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6912 SdHoareTripleChecker+Valid, 6929 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 07:06:35,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6912 Valid, 6929 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:35,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:35,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6123767426045563) internal successors, (9484), 5883 states have internal predecessors, (9484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9484 transitions. [2022-01-11 07:06:35,555 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9484 transitions. Word has length 176 [2022-01-11 07:06:35,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:35,555 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9484 transitions. [2022-01-11 07:06:35,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:35,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9484 transitions. [2022-01-11 07:06:35,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:35,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:35,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:35,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 07:06:35,557 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:35,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:35,558 INFO L85 PathProgramCache]: Analyzing trace with hash -812010854, now seen corresponding path program 1 times [2022-01-11 07:06:35,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:35,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340681695] [2022-01-11 07:06:35,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:35,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:06:35,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:35,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340681695] [2022-01-11 07:06:35,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340681695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:35,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:35,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:35,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946049274] [2022-01-11 07:06:35,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:35,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:35,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:35,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:35,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:35,637 INFO L87 Difference]: Start difference. First operand 5884 states and 9484 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:35,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:35,753 INFO L93 Difference]: Finished difference Result 9624 states and 14973 transitions. [2022-01-11 07:06:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:35,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:35,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:35,779 INFO L225 Difference]: With dead ends: 9624 [2022-01-11 07:06:35,779 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:35,786 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 07:06:35,786 INFO L933 BasicCegarLoop]: 6924 mSDtfsCounter, 6906 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6906 SdHoareTripleChecker+Valid, 6924 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 07:06:35,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6906 Valid, 6924 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:35,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:35,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.61101666099966) internal successors, (9476), 5883 states have internal predecessors, (9476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:36,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9476 transitions. [2022-01-11 07:06:36,001 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9476 transitions. Word has length 176 [2022-01-11 07:06:36,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:36,003 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9476 transitions. [2022-01-11 07:06:36,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:36,004 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9476 transitions. [2022-01-11 07:06:36,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:36,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:36,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:36,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 07:06:36,006 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:36,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:36,006 INFO L85 PathProgramCache]: Analyzing trace with hash -53026694, now seen corresponding path program 1 times [2022-01-11 07:06:36,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:36,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241635114] [2022-01-11 07:06:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:36,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:36,049 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 07:06:36,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:36,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241635114] [2022-01-11 07:06:36,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241635114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:36,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:36,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:36,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052944142] [2022-01-11 07:06:36,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:36,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:36,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:36,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:36,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:36,051 INFO L87 Difference]: Start difference. First operand 5884 states and 9476 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:36,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:36,185 INFO L93 Difference]: Finished difference Result 9623 states and 14956 transitions. [2022-01-11 07:06:36,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:36,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:36,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:36,199 INFO L225 Difference]: With dead ends: 9623 [2022-01-11 07:06:36,199 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:36,207 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 07:06:36,210 INFO L933 BasicCegarLoop]: 6919 mSDtfsCounter, 6900 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6900 SdHoareTripleChecker+Valid, 6919 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 07:06:36,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6900 Valid, 6919 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:36,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:36,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6096565793947637) internal successors, (9468), 5883 states have internal predecessors, (9468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9468 transitions. [2022-01-11 07:06:36,349 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9468 transitions. Word has length 176 [2022-01-11 07:06:36,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:36,350 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9468 transitions. [2022-01-11 07:06:36,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:36,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9468 transitions. [2022-01-11 07:06:36,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:36,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:36,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:36,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 07:06:36,352 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:36,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:36,352 INFO L85 PathProgramCache]: Analyzing trace with hash -28543334, now seen corresponding path program 1 times [2022-01-11 07:06:36,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:36,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102005302] [2022-01-11 07:06:36,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:36,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:36,397 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 07:06:36,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:36,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102005302] [2022-01-11 07:06:36,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102005302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:36,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:36,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:36,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472241406] [2022-01-11 07:06:36,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:36,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:36,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:36,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:36,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:36,399 INFO L87 Difference]: Start difference. First operand 5884 states and 9468 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:36,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:36,548 INFO L93 Difference]: Finished difference Result 9622 states and 14939 transitions. [2022-01-11 07:06:36,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:36,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:36,559 INFO L225 Difference]: With dead ends: 9622 [2022-01-11 07:06:36,559 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:36,563 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 07:06:36,564 INFO L933 BasicCegarLoop]: 6914 mSDtfsCounter, 6894 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6894 SdHoareTripleChecker+Valid, 6914 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 07:06:36,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6894 Valid, 6914 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:36,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:36,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:36,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6082964977898675) internal successors, (9460), 5883 states have internal predecessors, (9460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9460 transitions. [2022-01-11 07:06:36,679 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9460 transitions. Word has length 176 [2022-01-11 07:06:36,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:36,679 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9460 transitions. [2022-01-11 07:06:36,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:36,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9460 transitions. [2022-01-11 07:06:36,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:36,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:36,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:36,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 07:06:36,681 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:36,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:36,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1967416198, now seen corresponding path program 1 times [2022-01-11 07:06:36,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:36,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223131812] [2022-01-11 07:06:36,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:36,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:36,718 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 07:06:36,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:36,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223131812] [2022-01-11 07:06:36,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223131812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:36,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:36,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:36,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485458266] [2022-01-11 07:06:36,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:36,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:36,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:36,720 INFO L87 Difference]: Start difference. First operand 5884 states and 9460 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:36,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:36,836 INFO L93 Difference]: Finished difference Result 9621 states and 14922 transitions. [2022-01-11 07:06:36,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:36,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:36,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:36,847 INFO L225 Difference]: With dead ends: 9621 [2022-01-11 07:06:36,848 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:36,854 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 07:06:36,855 INFO L933 BasicCegarLoop]: 6909 mSDtfsCounter, 6888 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6888 SdHoareTripleChecker+Valid, 6909 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 07:06:36,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6888 Valid, 6909 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:36,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.606936416184971) internal successors, (9452), 5883 states have internal predecessors, (9452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:36,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9452 transitions. [2022-01-11 07:06:36,986 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9452 transitions. Word has length 176 [2022-01-11 07:06:36,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:36,986 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9452 transitions. [2022-01-11 07:06:36,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:36,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9452 transitions. [2022-01-11 07:06:36,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:36,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:36,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:36,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 07:06:36,988 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:36,989 INFO L85 PathProgramCache]: Analyzing trace with hash 48249498, now seen corresponding path program 1 times [2022-01-11 07:06:36,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:36,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791018354] [2022-01-11 07:06:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:36,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:37,058 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 07:06:37,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:37,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791018354] [2022-01-11 07:06:37,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791018354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:37,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:37,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:37,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140922874] [2022-01-11 07:06:37,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:37,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:37,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:37,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:37,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:37,060 INFO L87 Difference]: Start difference. First operand 5884 states and 9452 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:37,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:37,203 INFO L93 Difference]: Finished difference Result 9620 states and 14905 transitions. [2022-01-11 07:06:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:37,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:37,239 INFO L225 Difference]: With dead ends: 9620 [2022-01-11 07:06:37,239 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:37,246 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 07:06:37,247 INFO L933 BasicCegarLoop]: 6904 mSDtfsCounter, 6882 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6882 SdHoareTripleChecker+Valid, 6904 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 07:06:37,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6882 Valid, 6904 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:37,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6055763345800749) internal successors, (9444), 5883 states have internal predecessors, (9444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9444 transitions. [2022-01-11 07:06:37,511 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9444 transitions. Word has length 176 [2022-01-11 07:06:37,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:37,511 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9444 transitions. [2022-01-11 07:06:37,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:37,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9444 transitions. [2022-01-11 07:06:37,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:37,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:37,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:37,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 07:06:37,516 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:37,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:37,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2103486342, now seen corresponding path program 1 times [2022-01-11 07:06:37,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:37,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895651432] [2022-01-11 07:06:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:37,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:37,556 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 07:06:37,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:37,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895651432] [2022-01-11 07:06:37,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895651432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:37,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:37,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:37,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021766967] [2022-01-11 07:06:37,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:37,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:37,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:37,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:37,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:37,558 INFO L87 Difference]: Start difference. First operand 5884 states and 9444 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:37,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:37,685 INFO L93 Difference]: Finished difference Result 9619 states and 14888 transitions. [2022-01-11 07:06:37,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:37,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:37,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:37,696 INFO L225 Difference]: With dead ends: 9619 [2022-01-11 07:06:37,696 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:37,702 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 07:06:37,702 INFO L933 BasicCegarLoop]: 6899 mSDtfsCounter, 6876 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6876 SdHoareTripleChecker+Valid, 6899 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 07:06:37,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6876 Valid, 6899 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:37,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:37,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6042162529751784) internal successors, (9436), 5883 states have internal predecessors, (9436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:37,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9436 transitions. [2022-01-11 07:06:37,861 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9436 transitions. Word has length 176 [2022-01-11 07:06:37,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:37,861 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9436 transitions. [2022-01-11 07:06:37,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:37,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9436 transitions. [2022-01-11 07:06:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:37,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:37,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:37,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 07:06:37,863 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:37,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:37,864 INFO L85 PathProgramCache]: Analyzing trace with hash -510329190, now seen corresponding path program 1 times [2022-01-11 07:06:37,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:37,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605784640] [2022-01-11 07:06:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:37,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:37,912 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 07:06:37,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:37,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605784640] [2022-01-11 07:06:37,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605784640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:37,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:37,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:37,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702882452] [2022-01-11 07:06:37,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:37,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:37,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:37,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:37,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:37,914 INFO L87 Difference]: Start difference. First operand 5884 states and 9436 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:38,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:38,074 INFO L93 Difference]: Finished difference Result 9618 states and 14871 transitions. [2022-01-11 07:06:38,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:38,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:38,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:38,087 INFO L225 Difference]: With dead ends: 9618 [2022-01-11 07:06:38,087 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:38,093 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 07:06:38,094 INFO L933 BasicCegarLoop]: 6894 mSDtfsCounter, 6870 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6870 SdHoareTripleChecker+Valid, 6894 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 07:06:38,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6870 Valid, 6894 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:38,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:38,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:38,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6028561713702822) internal successors, (9428), 5883 states have internal predecessors, (9428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:38,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9428 transitions. [2022-01-11 07:06:38,268 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9428 transitions. Word has length 176 [2022-01-11 07:06:38,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:38,269 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9428 transitions. [2022-01-11 07:06:38,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:38,269 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9428 transitions. [2022-01-11 07:06:38,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:38,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:38,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:38,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 07:06:38,271 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:38,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:38,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1480725626, now seen corresponding path program 1 times [2022-01-11 07:06:38,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:38,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031240675] [2022-01-11 07:06:38,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:38,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:38,312 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 07:06:38,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:38,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031240675] [2022-01-11 07:06:38,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031240675] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:38,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:38,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:38,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829868150] [2022-01-11 07:06:38,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:38,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:38,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:38,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:38,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:38,314 INFO L87 Difference]: Start difference. First operand 5884 states and 9428 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:38,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:38,467 INFO L93 Difference]: Finished difference Result 9617 states and 14854 transitions. [2022-01-11 07:06:38,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:38,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:38,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:38,476 INFO L225 Difference]: With dead ends: 9617 [2022-01-11 07:06:38,477 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:38,481 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 07:06:38,482 INFO L933 BasicCegarLoop]: 6889 mSDtfsCounter, 6864 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6864 SdHoareTripleChecker+Valid, 6889 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 07:06:38,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6864 Valid, 6889 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:38,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:38,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:38,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6014960897653858) internal successors, (9420), 5883 states have internal predecessors, (9420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:38,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9420 transitions. [2022-01-11 07:06:38,648 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9420 transitions. Word has length 176 [2022-01-11 07:06:38,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:38,648 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9420 transitions. [2022-01-11 07:06:38,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:38,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9420 transitions. [2022-01-11 07:06:38,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:38,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:38,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:38,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 07:06:38,651 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:38,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:38,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1364540774, now seen corresponding path program 1 times [2022-01-11 07:06:38,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:38,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196540374] [2022-01-11 07:06:38,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:38,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:38,698 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 07:06:38,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:38,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196540374] [2022-01-11 07:06:38,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196540374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:38,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:38,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:38,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848913714] [2022-01-11 07:06:38,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:38,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:38,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:38,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:38,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:38,700 INFO L87 Difference]: Start difference. First operand 5884 states and 9420 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:38,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:38,847 INFO L93 Difference]: Finished difference Result 9615 states and 14835 transitions. [2022-01-11 07:06:38,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:38,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:38,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:38,857 INFO L225 Difference]: With dead ends: 9615 [2022-01-11 07:06:38,857 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:38,862 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 07:06:38,863 INFO L933 BasicCegarLoop]: 6884 mSDtfsCounter, 6857 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6857 SdHoareTripleChecker+Valid, 6884 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 07:06:38,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6857 Valid, 6884 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:38,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6001360081604896) internal successors, (9412), 5883 states have internal predecessors, (9412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:39,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9412 transitions. [2022-01-11 07:06:39,005 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9412 transitions. Word has length 176 [2022-01-11 07:06:39,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:39,006 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9412 transitions. [2022-01-11 07:06:39,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:39,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9412 transitions. [2022-01-11 07:06:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:39,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:39,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:39,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 07:06:39,007 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:39,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:39,008 INFO L85 PathProgramCache]: Analyzing trace with hash -844597062, now seen corresponding path program 1 times [2022-01-11 07:06:39,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:39,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957147618] [2022-01-11 07:06:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:39,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:39,050 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 07:06:39,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:39,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957147618] [2022-01-11 07:06:39,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957147618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:39,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:39,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:39,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345443318] [2022-01-11 07:06:39,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:39,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:39,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:39,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:39,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:39,052 INFO L87 Difference]: Start difference. First operand 5884 states and 9412 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:39,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:39,171 INFO L93 Difference]: Finished difference Result 9614 states and 14818 transitions. [2022-01-11 07:06:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:39,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:39,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:39,181 INFO L225 Difference]: With dead ends: 9614 [2022-01-11 07:06:39,181 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:39,188 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 07:06:39,188 INFO L933 BasicCegarLoop]: 6879 mSDtfsCounter, 6851 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6851 SdHoareTripleChecker+Valid, 6879 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 07:06:39,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6851 Valid, 6879 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:39,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5987759265555934) internal successors, (9404), 5883 states have internal predecessors, (9404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9404 transitions. [2022-01-11 07:06:39,363 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9404 transitions. Word has length 176 [2022-01-11 07:06:39,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:39,363 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9404 transitions. [2022-01-11 07:06:39,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:39,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9404 transitions. [2022-01-11 07:06:39,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:39,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:39,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:39,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 07:06:39,365 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:39,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:39,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1527479962, now seen corresponding path program 1 times [2022-01-11 07:06:39,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:39,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594497093] [2022-01-11 07:06:39,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:39,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:06:39,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:39,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594497093] [2022-01-11 07:06:39,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594497093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:39,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:39,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:39,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982343176] [2022-01-11 07:06:39,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:39,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:39,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:39,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:39,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:39,412 INFO L87 Difference]: Start difference. First operand 5884 states and 9404 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:39,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:39,602 INFO L93 Difference]: Finished difference Result 9613 states and 14801 transitions. [2022-01-11 07:06:39,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:39,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:39,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:39,612 INFO L225 Difference]: With dead ends: 9613 [2022-01-11 07:06:39,612 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:39,617 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 07:06:39,617 INFO L933 BasicCegarLoop]: 6842 mSDtfsCounter, 6687 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6687 SdHoareTripleChecker+Valid, 6980 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 07:06:39,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6687 Valid, 6980 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:39,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:39,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:39,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.592315538932336) internal successors, (9366), 5883 states have internal predecessors, (9366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9366 transitions. [2022-01-11 07:06:39,786 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9366 transitions. Word has length 176 [2022-01-11 07:06:39,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:39,786 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9366 transitions. [2022-01-11 07:06:39,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:39,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9366 transitions. [2022-01-11 07:06:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:39,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:39,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:39,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 07:06:39,788 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:39,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:39,788 INFO L85 PathProgramCache]: Analyzing trace with hash 610354104, now seen corresponding path program 1 times [2022-01-11 07:06:39,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:39,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588229829] [2022-01-11 07:06:39,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:39,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:39,824 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 07:06:39,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:39,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588229829] [2022-01-11 07:06:39,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588229829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:39,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:39,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:39,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553175180] [2022-01-11 07:06:39,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:39,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:39,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:39,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:39,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:39,825 INFO L87 Difference]: Start difference. First operand 5884 states and 9366 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:39,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:39,984 INFO L93 Difference]: Finished difference Result 9612 states and 14724 transitions. [2022-01-11 07:06:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:39,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:39,995 INFO L225 Difference]: With dead ends: 9612 [2022-01-11 07:06:39,995 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:40,002 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 07:06:40,003 INFO L933 BasicCegarLoop]: 6821 mSDtfsCounter, 6666 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6666 SdHoareTripleChecker+Valid, 6958 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 07:06:40,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6666 Valid, 6958 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:40,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5858551513090786) internal successors, (9328), 5883 states have internal predecessors, (9328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9328 transitions. [2022-01-11 07:06:40,159 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9328 transitions. Word has length 176 [2022-01-11 07:06:40,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:40,159 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9328 transitions. [2022-01-11 07:06:40,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:40,159 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9328 transitions. [2022-01-11 07:06:40,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:40,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:40,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:40,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 07:06:40,161 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:40,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:40,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1576499287, now seen corresponding path program 1 times [2022-01-11 07:06:40,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:40,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876853927] [2022-01-11 07:06:40,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:40,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:40,247 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 07:06:40,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:40,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876853927] [2022-01-11 07:06:40,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876853927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:40,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:40,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:40,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546035829] [2022-01-11 07:06:40,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:40,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:40,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:40,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:40,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:40,249 INFO L87 Difference]: Start difference. First operand 5884 states and 9328 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:40,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:40,434 INFO L93 Difference]: Finished difference Result 9611 states and 14647 transitions. [2022-01-11 07:06:40,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:40,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:40,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:40,444 INFO L225 Difference]: With dead ends: 9611 [2022-01-11 07:06:40,444 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:40,448 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 07:06:40,448 INFO L933 BasicCegarLoop]: 6800 mSDtfsCounter, 6645 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6645 SdHoareTripleChecker+Valid, 6936 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:06:40,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6645 Valid, 6936 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:06:40,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:40,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:40,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5793947636858212) internal successors, (9290), 5883 states have internal predecessors, (9290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:40,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9290 transitions. [2022-01-11 07:06:40,580 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9290 transitions. Word has length 176 [2022-01-11 07:06:40,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:40,580 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9290 transitions. [2022-01-11 07:06:40,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:40,581 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9290 transitions. [2022-01-11 07:06:40,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:40,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:40,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:40,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 07:06:40,582 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:40,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:40,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1414803574, now seen corresponding path program 1 times [2022-01-11 07:06:40,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:40,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292745045] [2022-01-11 07:06:40,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:40,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:40,616 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 07:06:40,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:40,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292745045] [2022-01-11 07:06:40,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292745045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:40,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:40,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:40,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583182432] [2022-01-11 07:06:40,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:40,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:40,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:40,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:40,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:40,617 INFO L87 Difference]: Start difference. First operand 5884 states and 9290 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:40,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:40,771 INFO L93 Difference]: Finished difference Result 9610 states and 14570 transitions. [2022-01-11 07:06:40,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:40,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:40,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:40,780 INFO L225 Difference]: With dead ends: 9610 [2022-01-11 07:06:40,780 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:40,785 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 07:06:40,785 INFO L933 BasicCegarLoop]: 6779 mSDtfsCounter, 6624 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6624 SdHoareTripleChecker+Valid, 6914 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 07:06:40,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6624 Valid, 6914 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:40,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:40,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5729343760625638) internal successors, (9252), 5883 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9252 transitions. [2022-01-11 07:06:40,933 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9252 transitions. Word has length 176 [2022-01-11 07:06:40,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:40,933 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9252 transitions. [2022-01-11 07:06:40,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:40,933 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9252 transitions. [2022-01-11 07:06:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:40,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:40,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:40,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 07:06:40,935 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:40,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:40,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1940569195, now seen corresponding path program 1 times [2022-01-11 07:06:40,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:40,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779282324] [2022-01-11 07:06:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:40,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:40,969 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 07:06:40,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:40,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779282324] [2022-01-11 07:06:40,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779282324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:40,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:40,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:40,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571610830] [2022-01-11 07:06:40,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:40,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:40,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:40,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:40,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:40,971 INFO L87 Difference]: Start difference. First operand 5884 states and 9252 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:41,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:41,135 INFO L93 Difference]: Finished difference Result 9609 states and 14493 transitions. [2022-01-11 07:06:41,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:41,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:41,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:41,144 INFO L225 Difference]: With dead ends: 9609 [2022-01-11 07:06:41,144 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:41,148 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 07:06:41,148 INFO L933 BasicCegarLoop]: 6758 mSDtfsCounter, 6603 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6603 SdHoareTripleChecker+Valid, 6892 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 07:06:41,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6603 Valid, 6892 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:41,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:41,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5664739884393064) internal successors, (9214), 5883 states have internal predecessors, (9214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:41,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9214 transitions. [2022-01-11 07:06:41,289 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9214 transitions. Word has length 176 [2022-01-11 07:06:41,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:41,289 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9214 transitions. [2022-01-11 07:06:41,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9214 transitions. [2022-01-11 07:06:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:41,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:41,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:41,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 07:06:41,291 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:41,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:41,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1596949197, now seen corresponding path program 1 times [2022-01-11 07:06:41,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:41,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662101268] [2022-01-11 07:06:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:41,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:41,337 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 07:06:41,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:41,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662101268] [2022-01-11 07:06:41,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662101268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:41,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:41,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:41,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828747886] [2022-01-11 07:06:41,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:41,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:41,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:41,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:41,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:41,338 INFO L87 Difference]: Start difference. First operand 5884 states and 9214 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:41,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:41,509 INFO L93 Difference]: Finished difference Result 9608 states and 14416 transitions. [2022-01-11 07:06:41,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:41,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:41,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:41,517 INFO L225 Difference]: With dead ends: 9608 [2022-01-11 07:06:41,517 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:41,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:41,521 INFO L933 BasicCegarLoop]: 6737 mSDtfsCounter, 6582 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6582 SdHoareTripleChecker+Valid, 6870 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 07:06:41,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6582 Valid, 6870 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:41,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:41,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.560013600816049) internal successors, (9176), 5883 states have internal predecessors, (9176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9176 transitions. [2022-01-11 07:06:41,714 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9176 transitions. Word has length 176 [2022-01-11 07:06:41,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:41,714 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9176 transitions. [2022-01-11 07:06:41,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:41,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9176 transitions. [2022-01-11 07:06:41,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:41,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:41,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:41,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 07:06:41,716 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:41,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:41,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1885327662, now seen corresponding path program 1 times [2022-01-11 07:06:41,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:41,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058764568] [2022-01-11 07:06:41,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:41,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:41,765 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 07:06:41,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:41,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058764568] [2022-01-11 07:06:41,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058764568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:41,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:41,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:41,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101309380] [2022-01-11 07:06:41,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:41,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:41,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:41,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:41,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:41,767 INFO L87 Difference]: Start difference. First operand 5884 states and 9176 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:41,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:41,937 INFO L93 Difference]: Finished difference Result 9607 states and 14339 transitions. [2022-01-11 07:06:41,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:41,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:41,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:41,945 INFO L225 Difference]: With dead ends: 9607 [2022-01-11 07:06:41,945 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:41,950 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 07:06:41,950 INFO L933 BasicCegarLoop]: 6716 mSDtfsCounter, 6561 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6561 SdHoareTripleChecker+Valid, 6848 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 07:06:41,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6561 Valid, 6848 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:41,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:42,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:42,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5535532131927916) internal successors, (9138), 5883 states have internal predecessors, (9138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9138 transitions. [2022-01-11 07:06:42,099 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9138 transitions. Word has length 176 [2022-01-11 07:06:42,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:42,099 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9138 transitions. [2022-01-11 07:06:42,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:42,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9138 transitions. [2022-01-11 07:06:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:42,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:42,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:42,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 07:06:42,101 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:42,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1672330255, now seen corresponding path program 1 times [2022-01-11 07:06:42,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:42,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853234071] [2022-01-11 07:06:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:42,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:42,153 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 07:06:42,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:42,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853234071] [2022-01-11 07:06:42,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853234071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:42,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:42,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:42,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566112011] [2022-01-11 07:06:42,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:42,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:42,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:42,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:42,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:42,155 INFO L87 Difference]: Start difference. First operand 5884 states and 9138 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:42,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:42,329 INFO L93 Difference]: Finished difference Result 9606 states and 14262 transitions. [2022-01-11 07:06:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:42,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:42,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:42,337 INFO L225 Difference]: With dead ends: 9606 [2022-01-11 07:06:42,337 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:42,341 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 07:06:42,342 INFO L933 BasicCegarLoop]: 6695 mSDtfsCounter, 6540 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6540 SdHoareTripleChecker+Valid, 6826 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 07:06:42,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6540 Valid, 6826 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:42,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:42,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5470928255695342) internal successors, (9100), 5883 states have internal predecessors, (9100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:42,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9100 transitions. [2022-01-11 07:06:42,497 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9100 transitions. Word has length 176 [2022-01-11 07:06:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:42,497 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9100 transitions. [2022-01-11 07:06:42,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:42,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9100 transitions. [2022-01-11 07:06:42,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:42,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:42,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:42,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 07:06:42,498 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:42,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:42,499 INFO L85 PathProgramCache]: Analyzing trace with hash 343168016, now seen corresponding path program 1 times [2022-01-11 07:06:42,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:42,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063082303] [2022-01-11 07:06:42,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:42,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:42,536 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 07:06:42,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:42,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063082303] [2022-01-11 07:06:42,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063082303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:42,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:42,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:42,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993650546] [2022-01-11 07:06:42,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:42,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:42,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:42,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:42,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:42,537 INFO L87 Difference]: Start difference. First operand 5884 states and 9100 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:42,719 INFO L93 Difference]: Finished difference Result 9605 states and 14185 transitions. [2022-01-11 07:06:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:42,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:42,727 INFO L225 Difference]: With dead ends: 9605 [2022-01-11 07:06:42,727 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:42,732 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 07:06:42,733 INFO L933 BasicCegarLoop]: 6674 mSDtfsCounter, 6519 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6519 SdHoareTripleChecker+Valid, 6804 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 07:06:42,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6519 Valid, 6804 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:42,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5406324379462768) internal successors, (9062), 5883 states have internal predecessors, (9062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:42,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9062 transitions. [2022-01-11 07:06:42,906 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9062 transitions. Word has length 176 [2022-01-11 07:06:42,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:42,907 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9062 transitions. [2022-01-11 07:06:42,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:42,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9062 transitions. [2022-01-11 07:06:42,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:42,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:42,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:42,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 07:06:42,908 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:42,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:42,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1653882322, now seen corresponding path program 1 times [2022-01-11 07:06:42,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:42,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166551932] [2022-01-11 07:06:42,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:42,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:42,946 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 07:06:42,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:42,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166551932] [2022-01-11 07:06:42,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166551932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:42,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:42,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:42,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576099151] [2022-01-11 07:06:42,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:42,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:42,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:42,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:42,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:42,947 INFO L87 Difference]: Start difference. First operand 5884 states and 9062 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:43,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:43,131 INFO L93 Difference]: Finished difference Result 9604 states and 14108 transitions. [2022-01-11 07:06:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:43,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:43,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:43,139 INFO L225 Difference]: With dead ends: 9604 [2022-01-11 07:06:43,139 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:43,144 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 07:06:43,144 INFO L933 BasicCegarLoop]: 6653 mSDtfsCounter, 6498 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6498 SdHoareTripleChecker+Valid, 6782 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 07:06:43,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6498 Valid, 6782 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:43,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:43,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5341720503230194) internal successors, (9024), 5883 states have internal predecessors, (9024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:43,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9024 transitions. [2022-01-11 07:06:43,312 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9024 transitions. Word has length 176 [2022-01-11 07:06:43,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:43,312 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9024 transitions. [2022-01-11 07:06:43,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:43,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9024 transitions. [2022-01-11 07:06:43,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:43,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:43,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:43,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 07:06:43,314 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:43,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:43,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1535373517, now seen corresponding path program 1 times [2022-01-11 07:06:43,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:43,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059647640] [2022-01-11 07:06:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:43,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:43,349 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 07:06:43,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:43,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059647640] [2022-01-11 07:06:43,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059647640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:43,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:43,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:43,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953712836] [2022-01-11 07:06:43,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:43,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:43,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:43,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:43,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:43,351 INFO L87 Difference]: Start difference. First operand 5884 states and 9024 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:43,556 INFO L93 Difference]: Finished difference Result 9603 states and 14031 transitions. [2022-01-11 07:06:43,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:43,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:43,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:43,563 INFO L225 Difference]: With dead ends: 9603 [2022-01-11 07:06:43,563 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:43,566 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 07:06:43,567 INFO L933 BasicCegarLoop]: 6632 mSDtfsCounter, 6477 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6477 SdHoareTripleChecker+Valid, 6760 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 07:06:43,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6477 Valid, 6760 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:43,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:43,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:43,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.527711662699762) internal successors, (8986), 5883 states have internal predecessors, (8986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:43,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 8986 transitions. [2022-01-11 07:06:43,731 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 8986 transitions. Word has length 176 [2022-01-11 07:06:43,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:43,731 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 8986 transitions. [2022-01-11 07:06:43,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:43,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 8986 transitions. [2022-01-11 07:06:43,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:43,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:43,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:43,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 07:06:43,733 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:43,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:43,733 INFO L85 PathProgramCache]: Analyzing trace with hash -504732948, now seen corresponding path program 1 times [2022-01-11 07:06:43,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:43,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611948849] [2022-01-11 07:06:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:43,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:43,768 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 07:06:43,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:43,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611948849] [2022-01-11 07:06:43,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611948849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:43,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:43,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:43,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476747583] [2022-01-11 07:06:43,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:43,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:43,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:43,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:43,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:43,770 INFO L87 Difference]: Start difference. First operand 5884 states and 8986 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:43,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:43,964 INFO L93 Difference]: Finished difference Result 9602 states and 13954 transitions. [2022-01-11 07:06:43,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:43,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:43,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:43,971 INFO L225 Difference]: With dead ends: 9602 [2022-01-11 07:06:43,971 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:43,977 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 07:06:43,977 INFO L933 BasicCegarLoop]: 6611 mSDtfsCounter, 6456 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6456 SdHoareTripleChecker+Valid, 6738 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 07:06:43,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6456 Valid, 6738 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:43,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:44,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:44,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5212512750765046) internal successors, (8948), 5883 states have internal predecessors, (8948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:44,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 8948 transitions. [2022-01-11 07:06:44,151 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 8948 transitions. Word has length 176 [2022-01-11 07:06:44,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:44,151 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 8948 transitions. [2022-01-11 07:06:44,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:44,151 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 8948 transitions. [2022-01-11 07:06:44,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:44,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:44,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:44,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 07:06:44,152 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:44,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:44,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1555853323, now seen corresponding path program 1 times [2022-01-11 07:06:44,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:44,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471905688] [2022-01-11 07:06:44,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:44,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:44,183 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 07:06:44,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:44,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471905688] [2022-01-11 07:06:44,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471905688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:44,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:44,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:44,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069003894] [2022-01-11 07:06:44,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:44,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:44,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:44,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:44,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:44,184 INFO L87 Difference]: Start difference. First operand 5884 states and 8948 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:44,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:44,379 INFO L93 Difference]: Finished difference Result 9601 states and 13877 transitions. [2022-01-11 07:06:44,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:44,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:44,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:44,387 INFO L225 Difference]: With dead ends: 9601 [2022-01-11 07:06:44,387 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:44,391 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 07:06:44,392 INFO L933 BasicCegarLoop]: 6590 mSDtfsCounter, 6435 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6435 SdHoareTripleChecker+Valid, 6716 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 07:06:44,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6435 Valid, 6716 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:44,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:44,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5147908874532472) internal successors, (8910), 5883 states have internal predecessors, (8910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 8910 transitions. [2022-01-11 07:06:44,572 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 8910 transitions. Word has length 176 [2022-01-11 07:06:44,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:44,572 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 8910 transitions. [2022-01-11 07:06:44,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:44,572 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 8910 transitions. [2022-01-11 07:06:44,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:44,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:44,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:44,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 07:06:44,573 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:44,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:44,574 INFO L85 PathProgramCache]: Analyzing trace with hash -254050262, now seen corresponding path program 1 times [2022-01-11 07:06:44,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:44,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943135963] [2022-01-11 07:06:44,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:44,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:44,606 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 07:06:44,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:44,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943135963] [2022-01-11 07:06:44,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943135963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:44,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:44,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:44,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926425912] [2022-01-11 07:06:44,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:44,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:44,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:44,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:44,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:44,607 INFO L87 Difference]: Start difference. First operand 5884 states and 8910 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:44,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:44,806 INFO L93 Difference]: Finished difference Result 9600 states and 13800 transitions. [2022-01-11 07:06:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:44,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:44,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:44,813 INFO L225 Difference]: With dead ends: 9600 [2022-01-11 07:06:44,814 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:06:44,817 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 07:06:44,818 INFO L933 BasicCegarLoop]: 6569 mSDtfsCounter, 6414 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6414 SdHoareTripleChecker+Valid, 6694 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 07:06:44,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6414 Valid, 6694 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:44,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:06:45,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:06:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5083304998299898) internal successors, (8872), 5883 states have internal predecessors, (8872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 8872 transitions. [2022-01-11 07:06:45,052 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 8872 transitions. Word has length 176 [2022-01-11 07:06:45,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:45,052 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 8872 transitions. [2022-01-11 07:06:45,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:45,056 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 8872 transitions. [2022-01-11 07:06:45,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:45,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:45,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:45,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 07:06:45,057 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:45,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:45,057 INFO L85 PathProgramCache]: Analyzing trace with hash 692792265, now seen corresponding path program 1 times [2022-01-11 07:06:45,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:45,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210073125] [2022-01-11 07:06:45,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:45,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:45,115 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 07:06:45,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:45,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210073125] [2022-01-11 07:06:45,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210073125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:45,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:45,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:06:45,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506596252] [2022-01-11 07:06:45,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:45,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:06:45,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:45,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:06:45,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:06:45,117 INFO L87 Difference]: Start difference. First operand 5884 states and 8872 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:45,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:45,551 INFO L93 Difference]: Finished difference Result 10798 states and 15371 transitions. [2022-01-11 07:06:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:06:45,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:45,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:45,560 INFO L225 Difference]: With dead ends: 10798 [2022-01-11 07:06:45,560 INFO L226 Difference]: Without dead ends: 7096 [2022-01-11 07:06:45,566 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 07:06:45,569 INFO L933 BasicCegarLoop]: 6748 mSDtfsCounter, 7401 mSDsluCounter, 14386 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7401 SdHoareTripleChecker+Valid, 21134 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:06:45,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7401 Valid, 21134 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:06:45,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7096 states. [2022-01-11 07:06:45,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7096 to 5890. [2022-01-11 07:06:45,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5890 states, 5888 states have (on average 1.502717391304348) internal successors, (8848), 5889 states have internal predecessors, (8848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 8848 transitions. [2022-01-11 07:06:45,816 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 8848 transitions. Word has length 176 [2022-01-11 07:06:45,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:45,817 INFO L470 AbstractCegarLoop]: Abstraction has 5890 states and 8848 transitions. [2022-01-11 07:06:45,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 8848 transitions. [2022-01-11 07:06:45,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:45,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:45,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:45,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 07:06:45,818 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:45,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1979274570, now seen corresponding path program 1 times [2022-01-11 07:06:45,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:45,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960152477] [2022-01-11 07:06:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:45,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:45,881 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 07:06:45,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:45,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960152477] [2022-01-11 07:06:45,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960152477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:45,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:45,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:06:45,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781261632] [2022-01-11 07:06:45,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:45,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:06:45,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:45,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:06:45,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:06:45,882 INFO L87 Difference]: Start difference. First operand 5890 states and 8848 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:46,328 INFO L93 Difference]: Finished difference Result 11687 states and 16433 transitions. [2022-01-11 07:06:46,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:06:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:46,339 INFO L225 Difference]: With dead ends: 11687 [2022-01-11 07:06:46,339 INFO L226 Difference]: Without dead ends: 8014 [2022-01-11 07:06:46,344 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 07:06:46,344 INFO L933 BasicCegarLoop]: 6640 mSDtfsCounter, 6511 mSDsluCounter, 16330 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6511 SdHoareTripleChecker+Valid, 22970 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:06:46,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6511 Valid, 22970 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:06:46,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8014 states. [2022-01-11 07:06:46,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8014 to 5896. [2022-01-11 07:06:46,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5896 states, 5894 states have (on average 1.497115710892433) internal successors, (8824), 5895 states have internal predecessors, (8824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:46,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5896 states to 5896 states and 8824 transitions. [2022-01-11 07:06:46,593 INFO L78 Accepts]: Start accepts. Automaton has 5896 states and 8824 transitions. Word has length 176 [2022-01-11 07:06:46,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:46,594 INFO L470 AbstractCegarLoop]: Abstraction has 5896 states and 8824 transitions. [2022-01-11 07:06:46,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:46,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5896 states and 8824 transitions. [2022-01-11 07:06:46,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:46,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:46,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:46,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 07:06:46,595 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:46,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:46,595 INFO L85 PathProgramCache]: Analyzing trace with hash -461347189, now seen corresponding path program 1 times [2022-01-11 07:06:46,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:46,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278042911] [2022-01-11 07:06:46,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:46,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:46,656 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 07:06:46,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:46,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278042911] [2022-01-11 07:06:46,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278042911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:46,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:46,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:46,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693174989] [2022-01-11 07:06:46,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:46,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:46,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:46,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:46,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:46,658 INFO L87 Difference]: Start difference. First operand 5896 states and 8824 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:46,905 INFO L93 Difference]: Finished difference Result 9640 states and 13645 transitions. [2022-01-11 07:06:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:46,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:46,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:46,915 INFO L225 Difference]: With dead ends: 9640 [2022-01-11 07:06:46,915 INFO L226 Difference]: Without dead ends: 5896 [2022-01-11 07:06:46,919 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 07:06:46,919 INFO L933 BasicCegarLoop]: 6548 mSDtfsCounter, 6409 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6409 SdHoareTripleChecker+Valid, 6548 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 07:06:46,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6409 Valid, 6548 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:46,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2022-01-11 07:06:47,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 5896. [2022-01-11 07:06:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5896 states, 5894 states have (on average 1.495758398371225) internal successors, (8816), 5895 states have internal predecessors, (8816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:47,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5896 states to 5896 states and 8816 transitions. [2022-01-11 07:06:47,206 INFO L78 Accepts]: Start accepts. Automaton has 5896 states and 8816 transitions. Word has length 176 [2022-01-11 07:06:47,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:47,207 INFO L470 AbstractCegarLoop]: Abstraction has 5896 states and 8816 transitions. [2022-01-11 07:06:47,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:47,207 INFO L276 IsEmpty]: Start isEmpty. Operand 5896 states and 8816 transitions. [2022-01-11 07:06:47,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:06:47,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:47,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:47,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 07:06:47,208 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:47,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:47,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1823516266, now seen corresponding path program 1 times [2022-01-11 07:06:47,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:47,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924314789] [2022-01-11 07:06:47,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:47,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:47,268 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 07:06:47,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:47,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924314789] [2022-01-11 07:06:47,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924314789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:47,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:47,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:06:47,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871146224] [2022-01-11 07:06:47,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:47,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:47,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:47,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:47,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:47,269 INFO L87 Difference]: Start difference. First operand 5896 states and 8816 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:47,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:47,732 INFO L93 Difference]: Finished difference Result 13182 states and 18210 transitions. [2022-01-11 07:06:47,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:47,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:06:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:47,744 INFO L225 Difference]: With dead ends: 13182 [2022-01-11 07:06:47,744 INFO L226 Difference]: Without dead ends: 9456 [2022-01-11 07:06:47,749 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 07:06:47,750 INFO L933 BasicCegarLoop]: 6533 mSDtfsCounter, 6338 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 8877 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:06:47,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6338 Valid, 8877 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:47,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9456 states. [2022-01-11 07:06:48,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9456 to 9256. [2022-01-11 07:06:48,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9256 states, 9254 states have (on average 1.4185217203371514) internal successors, (13127), 9255 states have internal predecessors, (13127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9256 states to 9256 states and 13127 transitions. [2022-01-11 07:06:48,183 INFO L78 Accepts]: Start accepts. Automaton has 9256 states and 13127 transitions. Word has length 176 [2022-01-11 07:06:48,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:48,183 INFO L470 AbstractCegarLoop]: Abstraction has 9256 states and 13127 transitions. [2022-01-11 07:06:48,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:48,183 INFO L276 IsEmpty]: Start isEmpty. Operand 9256 states and 13127 transitions. [2022-01-11 07:06:48,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-11 07:06:48,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:48,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:48,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 07:06:48,188 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:48,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:48,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1850101902, now seen corresponding path program 1 times [2022-01-11 07:06:48,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:48,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435883101] [2022-01-11 07:06:48,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:48,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:48,247 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 07:06:48,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:48,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435883101] [2022-01-11 07:06:48,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435883101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:48,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:48,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:06:48,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168883321] [2022-01-11 07:06:48,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:48,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:48,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:48,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:48,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:48,248 INFO L87 Difference]: Start difference. First operand 9256 states and 13127 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:49,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:49,132 INFO L93 Difference]: Finished difference Result 23192 states and 31064 transitions. [2022-01-11 07:06:49,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:49,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2022-01-11 07:06:49,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:49,153 INFO L225 Difference]: With dead ends: 23192 [2022-01-11 07:06:49,153 INFO L226 Difference]: Without dead ends: 16112 [2022-01-11 07:06:49,162 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 07:06:49,164 INFO L933 BasicCegarLoop]: 6530 mSDtfsCounter, 6374 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6374 SdHoareTripleChecker+Valid, 8874 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:06:49,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6374 Valid, 8874 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:49,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16112 states. [2022-01-11 07:06:50,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16112 to 15742. [2022-01-11 07:06:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15742 states, 15740 states have (on average 1.3620711562897077) internal successors, (21439), 15741 states have internal predecessors, (21439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15742 states to 15742 states and 21439 transitions. [2022-01-11 07:06:50,038 INFO L78 Accepts]: Start accepts. Automaton has 15742 states and 21439 transitions. Word has length 286 [2022-01-11 07:06:50,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:50,038 INFO L470 AbstractCegarLoop]: Abstraction has 15742 states and 21439 transitions. [2022-01-11 07:06:50,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 15742 states and 21439 transitions. [2022-01-11 07:06:50,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-11 07:06:50,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:50,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:50,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 07:06:50,049 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:50,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:50,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1092325298, now seen corresponding path program 1 times [2022-01-11 07:06:50,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:50,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890295516] [2022-01-11 07:06:50,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:50,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:50,140 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 07:06:50,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:50,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890295516] [2022-01-11 07:06:50,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890295516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:50,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:50,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:06:50,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490229692] [2022-01-11 07:06:50,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:50,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:06:50,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:50,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:06:50,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:06:50,142 INFO L87 Difference]: Start difference. First operand 15742 states and 21439 transitions. Second operand has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:51,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:51,973 INFO L93 Difference]: Finished difference Result 41926 states and 55260 transitions. [2022-01-11 07:06:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:06:51,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2022-01-11 07:06:51,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:52,007 INFO L225 Difference]: With dead ends: 41926 [2022-01-11 07:06:52,007 INFO L226 Difference]: Without dead ends: 28448 [2022-01-11 07:06:52,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 07:06:52,017 INFO L933 BasicCegarLoop]: 6489 mSDtfsCounter, 5264 mSDsluCounter, 19057 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 25546 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:06:52,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5264 Valid, 25546 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:06:52,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28448 states. [2022-01-11 07:06:52,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28448 to 15766. [2022-01-11 07:06:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15766 states, 15764 states have (on average 1.3546054300938848) internal successors, (21354), 15765 states have internal predecessors, (21354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:52,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15766 states to 15766 states and 21354 transitions. [2022-01-11 07:06:52,996 INFO L78 Accepts]: Start accepts. Automaton has 15766 states and 21354 transitions. Word has length 286 [2022-01-11 07:06:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:52,996 INFO L470 AbstractCegarLoop]: Abstraction has 15766 states and 21354 transitions. [2022-01-11 07:06:52,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand 15766 states and 21354 transitions. [2022-01-11 07:06:53,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-11 07:06:53,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:53,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:53,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-11 07:06:53,002 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:53,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:53,003 INFO L85 PathProgramCache]: Analyzing trace with hash 900691188, now seen corresponding path program 1 times [2022-01-11 07:06:53,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:53,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238614378] [2022-01-11 07:06:53,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:53,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:06:53,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:53,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238614378] [2022-01-11 07:06:53,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238614378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:53,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:53,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:06:53,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816388220] [2022-01-11 07:06:53,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:53,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:53,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:53,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:53,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:53,094 INFO L87 Difference]: Start difference. First operand 15766 states and 21354 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:54,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:54,844 INFO L93 Difference]: Finished difference Result 42155 states and 54797 transitions. [2022-01-11 07:06:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:54,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2022-01-11 07:06:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:54,885 INFO L225 Difference]: With dead ends: 42155 [2022-01-11 07:06:54,885 INFO L226 Difference]: Without dead ends: 28683 [2022-01-11 07:06:54,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:54,904 INFO L933 BasicCegarLoop]: 8195 mSDtfsCounter, 6065 mSDsluCounter, 2555 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6065 SdHoareTripleChecker+Valid, 10750 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:06:54,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6065 Valid, 10750 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:54,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28683 states. [2022-01-11 07:06:56,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28683 to 28681. [2022-01-11 07:06:56,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28681 states, 28679 states have (on average 1.3102618640817323) internal successors, (37577), 28680 states have internal predecessors, (37577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:56,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28681 states to 28681 states and 37577 transitions. [2022-01-11 07:06:56,899 INFO L78 Accepts]: Start accepts. Automaton has 28681 states and 37577 transitions. Word has length 286 [2022-01-11 07:06:56,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:56,900 INFO L470 AbstractCegarLoop]: Abstraction has 28681 states and 37577 transitions. [2022-01-11 07:06:56,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:56,900 INFO L276 IsEmpty]: Start isEmpty. Operand 28681 states and 37577 transitions. [2022-01-11 07:06:56,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-11 07:06:56,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:56,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:56,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-11 07:06:56,911 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:56,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:56,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1771512787, now seen corresponding path program 1 times [2022-01-11 07:06:56,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:56,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903862181] [2022-01-11 07:06:56,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:56,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:56,951 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 07:06:56,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:56,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903862181] [2022-01-11 07:06:56,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903862181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:56,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:56,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:06:56,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933815722] [2022-01-11 07:06:56,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:56,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:56,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:56,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:56,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:56,953 INFO L87 Difference]: Start difference. First operand 28681 states and 37577 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:58,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:58,831 INFO L93 Difference]: Finished difference Result 54901 states and 70786 transitions. [2022-01-11 07:06:58,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:58,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 286 [2022-01-11 07:06:58,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:58,875 INFO L225 Difference]: With dead ends: 54901 [2022-01-11 07:06:58,876 INFO L226 Difference]: Without dead ends: 28514 [2022-01-11 07:06:58,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:58,904 INFO L933 BasicCegarLoop]: 6531 mSDtfsCounter, 2569 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2569 SdHoareTripleChecker+Valid, 10489 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 07:06:58,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2569 Valid, 10489 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:58,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28514 states. [2022-01-11 07:07:00,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28514 to 28514. [2022-01-11 07:07:00,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28514 states, 28512 states have (on average 1.310851571268238) internal successors, (37375), 28513 states have internal predecessors, (37375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:07:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28514 states to 28514 states and 37375 transitions. [2022-01-11 07:07:00,847 INFO L78 Accepts]: Start accepts. Automaton has 28514 states and 37375 transitions. Word has length 286 [2022-01-11 07:07:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:00,847 INFO L470 AbstractCegarLoop]: Abstraction has 28514 states and 37375 transitions. [2022-01-11 07:07:00,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:07:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 28514 states and 37375 transitions. [2022-01-11 07:07:00,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-01-11 07:07:00,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:00,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:00,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-11 07:07:00,857 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:00,857 INFO L85 PathProgramCache]: Analyzing trace with hash 690198726, now seen corresponding path program 1 times [2022-01-11 07:07:00,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:00,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406962641] [2022-01-11 07:07:00,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:00,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:00,942 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 07:07:00,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:00,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406962641] [2022-01-11 07:07:00,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406962641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:00,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:00,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:07:00,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738304304] [2022-01-11 07:07:00,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:00,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:00,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:00,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:00,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:00,943 INFO L87 Difference]: Start difference. First operand 28514 states and 37375 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:07:04,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:04,813 INFO L93 Difference]: Finished difference Result 80472 states and 102968 transitions. [2022-01-11 07:07:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:04,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 287 [2022-01-11 07:07:04,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:04,901 INFO L225 Difference]: With dead ends: 80472 [2022-01-11 07:07:04,901 INFO L226 Difference]: Without dead ends: 54252 [2022-01-11 07:07:04,934 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 07:07:04,935 INFO L933 BasicCegarLoop]: 7085 mSDtfsCounter, 6338 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 9622 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:07:04,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6338 Valid, 9622 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:04,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54252 states. [2022-01-11 07:07:08,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54252 to 52954. [2022-01-11 07:07:08,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52954 states, 52952 states have (on average 1.2858060129928992) internal successors, (68086), 52953 states have internal predecessors, (68086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:07:09,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52954 states to 52954 states and 68086 transitions. [2022-01-11 07:07:09,048 INFO L78 Accepts]: Start accepts. Automaton has 52954 states and 68086 transitions. Word has length 287 [2022-01-11 07:07:09,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:09,063 INFO L470 AbstractCegarLoop]: Abstraction has 52954 states and 68086 transitions. [2022-01-11 07:07:09,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:07:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 52954 states and 68086 transitions. [2022-01-11 07:07:09,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-01-11 07:07:09,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:09,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:09,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-11 07:07:09,089 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:09,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:09,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1967893725, now seen corresponding path program 1 times [2022-01-11 07:07:09,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:09,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611758673] [2022-01-11 07:07:09,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:09,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:09,123 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 07:07:09,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:09,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611758673] [2022-01-11 07:07:09,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611758673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:09,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:09,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:07:09,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918285306] [2022-01-11 07:07:09,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:09,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:09,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:09,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:09,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:09,125 INFO L87 Difference]: Start difference. First operand 52954 states and 68086 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:07:13,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:07:13,401 INFO L93 Difference]: Finished difference Result 103555 states and 131934 transitions. [2022-01-11 07:07:13,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:07:13,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 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 287 [2022-01-11 07:07:13,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:07:13,483 INFO L225 Difference]: With dead ends: 103555 [2022-01-11 07:07:13,483 INFO L226 Difference]: Without dead ends: 52788 [2022-01-11 07:07:13,515 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 07:07:13,516 INFO L933 BasicCegarLoop]: 6530 mSDtfsCounter, 2567 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2567 SdHoareTripleChecker+Valid, 10488 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 07:07:13,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2567 Valid, 10488 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:07:13,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52788 states. [2022-01-11 07:07:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52788 to 52788. [2022-01-11 07:07:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52788 states, 52786 states have (on average 1.2860606979123252) internal successors, (67886), 52787 states have internal predecessors, (67886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:07:17,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52788 states to 52788 states and 67886 transitions. [2022-01-11 07:07:17,623 INFO L78 Accepts]: Start accepts. Automaton has 52788 states and 67886 transitions. Word has length 287 [2022-01-11 07:07:17,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:07:17,623 INFO L470 AbstractCegarLoop]: Abstraction has 52788 states and 67886 transitions. [2022-01-11 07:07:17,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:07:17,624 INFO L276 IsEmpty]: Start isEmpty. Operand 52788 states and 67886 transitions. [2022-01-11 07:07:17,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-01-11 07:07:17,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:07:17,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:17,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-11 07:07:17,642 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:07:17,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:07:17,642 INFO L85 PathProgramCache]: Analyzing trace with hash -296423835, now seen corresponding path program 1 times [2022-01-11 07:07:17,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:07:17,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395395062] [2022-01-11 07:07:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:07:17,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:07:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:07:17,696 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 07:07:17,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:07:17,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395395062] [2022-01-11 07:07:17,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395395062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:07:17,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:07:17,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:07:17,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336277251] [2022-01-11 07:07:17,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:07:17,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:07:17,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:07:17,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:07:17,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:07:17,698 INFO L87 Difference]: Start difference. First operand 52788 states and 67886 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)