/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.13.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:06:30,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:06:30,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:06:30,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:06:30,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:06:30,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:06:30,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:06:30,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:06:30,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:06:30,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:06:30,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:06:30,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:06:30,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:06:30,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:06:30,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:06:30,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:06:30,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:06:30,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:06:30,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:06:30,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:06:30,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:06:30,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:06:30,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:06:30,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:06:30,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:06:30,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:06:30,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:06:30,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:06:30,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:06:30,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:06:30,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:06:30,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:06:30,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:06:30,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:06:30,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:06:30,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:06:30,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:06:30,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:06:30,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:06:30,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:06:30,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:06:30,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:06:30,476 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:06:30,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:06:30,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:06:30,476 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:06:30,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:06:30,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:06:30,478 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:06:30,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:06:30,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:06:30,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:06:30,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:06:30,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:06:30,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:06:30,479 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:06:30,479 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:06:30,479 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:06:30,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:06:30,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:06:30,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:06:30,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:06:30,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:06:30,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:06:30,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:06:30,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:06:30,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:06:30,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:06:30,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:06:30,481 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:06:30,481 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:06:30,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:06:30,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:06:30,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:06:30,482 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:06:30,482 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:06:30,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:06:30,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:06:30,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:06:30,722 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:06:30,722 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:06:30,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.13.cil-2.c [2022-01-11 06:06:30,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca013120/e1d811abbd1a409cafde2a7630226308/FLAGfce22d239 [2022-01-11 06:06:31,155 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:06:31,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.13.cil-2.c [2022-01-11 06:06:31,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca013120/e1d811abbd1a409cafde2a7630226308/FLAGfce22d239 [2022-01-11 06:06:31,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca013120/e1d811abbd1a409cafde2a7630226308 [2022-01-11 06:06:31,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:06:31,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:06:31,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:06:31,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:06:31,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:06:31,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:06:31" (1/1) ... [2022-01-11 06:06:31,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72fec3c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:31, skipping insertion in model container [2022-01-11 06:06:31,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:06:31" (1/1) ... [2022-01-11 06:06:31,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:06:31,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:06:31,386 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.13.cil-2.c[671,684] [2022-01-11 06:06:31,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:06:31,502 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:06:31,510 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.13.cil-2.c[671,684] [2022-01-11 06:06:31,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:06:31,582 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:06:31,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:31 WrapperNode [2022-01-11 06:06:31,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:06:31,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:06:31,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:06:31,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:06:31,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:31" (1/1) ... [2022-01-11 06:06:31,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:31" (1/1) ... [2022-01-11 06:06:31,743 INFO L137 Inliner]: procedures = 54, calls = 70, calls flagged for inlining = 65, calls inlined = 302, statements flattened = 4653 [2022-01-11 06:06:31,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:06:31,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:06:31,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:06:31,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:06:31,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:31" (1/1) ... [2022-01-11 06:06:31,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:31" (1/1) ... [2022-01-11 06:06:31,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:31" (1/1) ... [2022-01-11 06:06:31,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:31" (1/1) ... [2022-01-11 06:06:31,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:31" (1/1) ... [2022-01-11 06:06:31,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:31" (1/1) ... [2022-01-11 06:06:31,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:31" (1/1) ... [2022-01-11 06:06:31,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:06:31,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:06:31,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:06:31,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:06:31,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:31" (1/1) ... [2022-01-11 06:06:31,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:06:31,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:06:31,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 06:06:31,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 06:06:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:06:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:06:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:06:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:06:32,011 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:06:32,012 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:06:33,872 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:06:33,896 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:06:33,896 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-01-11 06:06:33,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:06:33 BoogieIcfgContainer [2022-01-11 06:06:33,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:06:33,901 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:06:33,901 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:06:33,902 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:06:33,904 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:06:33" (1/1) ... [2022-01-11 06:06:34,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:06:34 BasicIcfg [2022-01-11 06:06:34,200 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:06:34,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:06:34,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:06:34,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:06:34,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:06:31" (1/4) ... [2022-01-11 06:06:34,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69aeecc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:06:34, skipping insertion in model container [2022-01-11 06:06:34,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:06:31" (2/4) ... [2022-01-11 06:06:34,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69aeecc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:06:34, skipping insertion in model container [2022-01-11 06:06:34,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:06:33" (3/4) ... [2022-01-11 06:06:34,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69aeecc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:06:34, skipping insertion in model container [2022-01-11 06:06:34,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:06:34" (4/4) ... [2022-01-11 06:06:34,206 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.13.cil-2.cTransformedIcfg [2022-01-11 06:06:34,210 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:06:34,211 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:06:34,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:06:34,269 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 06:06:34,269 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:06:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 2025 states, 2023 states have (on average 1.496292634700939) internal successors, (3027), 2024 states have internal predecessors, (3027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:34,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:34,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:34,373 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] [2022-01-11 06:06:34,374 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:34,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:34,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1882419262, now seen corresponding path program 1 times [2022-01-11 06:06:34,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:34,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626737015] [2022-01-11 06:06:34,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:34,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:34,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:34,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626737015] [2022-01-11 06:06:34,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626737015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:34,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:34,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:34,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215043226] [2022-01-11 06:06:34,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:34,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:34,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:34,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:34,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:34,724 INFO L87 Difference]: Start difference. First operand has 2025 states, 2023 states have (on average 1.496292634700939) internal successors, (3027), 2024 states have internal predecessors, (3027), 0 states have call successors, (0), 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 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:35,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:35,021 INFO L93 Difference]: Finished difference Result 5778 states and 8614 transitions. [2022-01-11 06:06:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:35,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:35,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:35,049 INFO L225 Difference]: With dead ends: 5778 [2022-01-11 06:06:35,049 INFO L226 Difference]: Without dead ends: 3765 [2022-01-11 06:06:35,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:35,062 INFO L933 BasicCegarLoop]: 2987 mSDtfsCounter, 2826 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2826 SdHoareTripleChecker+Valid, 5686 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:35,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2826 Valid, 5686 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:35,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2022-01-11 06:06:35,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3763. [2022-01-11 06:06:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.473418394471026) internal successors, (5543), 3762 states have internal predecessors, (5543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:35,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5543 transitions. [2022-01-11 06:06:35,210 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5543 transitions. Word has length 175 [2022-01-11 06:06:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:35,211 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5543 transitions. [2022-01-11 06:06:35,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:35,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5543 transitions. [2022-01-11 06:06:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:35,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:35,221 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] [2022-01-11 06:06:35,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:06:35,222 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:35,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:35,223 INFO L85 PathProgramCache]: Analyzing trace with hash -223283618, now seen corresponding path program 1 times [2022-01-11 06:06:35,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:35,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298022935] [2022-01-11 06:06:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:35,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:35,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:35,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298022935] [2022-01-11 06:06:35,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298022935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:35,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:35,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:35,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845095980] [2022-01-11 06:06:35,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:35,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:35,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:35,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:35,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:35,388 INFO L87 Difference]: Start difference. First operand 3763 states and 5543 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:35,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:35,487 INFO L93 Difference]: Finished difference Result 7505 states and 11050 transitions. [2022-01-11 06:06:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:35,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:35,500 INFO L225 Difference]: With dead ends: 7505 [2022-01-11 06:06:35,500 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:35,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:35,512 INFO L933 BasicCegarLoop]: 2977 mSDtfsCounter, 2962 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2962 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:35,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2962 Valid, 2977 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:35,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:35,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.4712918660287082) internal successors, (5535), 3762 states have internal predecessors, (5535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:35,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5535 transitions. [2022-01-11 06:06:35,619 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5535 transitions. Word has length 175 [2022-01-11 06:06:35,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:35,620 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5535 transitions. [2022-01-11 06:06:35,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:35,621 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5535 transitions. [2022-01-11 06:06:35,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:35,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:35,624 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] [2022-01-11 06:06:35,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:06:35,626 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:35,631 INFO L85 PathProgramCache]: Analyzing trace with hash -983946178, now seen corresponding path program 1 times [2022-01-11 06:06:35,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:35,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884254537] [2022-01-11 06:06:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:35,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:35,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:35,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884254537] [2022-01-11 06:06:35,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884254537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:35,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:35,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:35,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902117124] [2022-01-11 06:06:35,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:35,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:35,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:35,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:35,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:35,729 INFO L87 Difference]: Start difference. First operand 3763 states and 5535 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:35,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:35,896 INFO L93 Difference]: Finished difference Result 7504 states and 11033 transitions. [2022-01-11 06:06:35,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:35,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:35,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:35,908 INFO L225 Difference]: With dead ends: 7504 [2022-01-11 06:06:35,908 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:35,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:35,918 INFO L933 BasicCegarLoop]: 2972 mSDtfsCounter, 2956 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2956 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:35,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2956 Valid, 2972 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:35,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:36,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.4691653375863902) internal successors, (5527), 3762 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:36,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5527 transitions. [2022-01-11 06:06:36,041 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5527 transitions. Word has length 175 [2022-01-11 06:06:36,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:36,041 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5527 transitions. [2022-01-11 06:06:36,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:36,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5527 transitions. [2022-01-11 06:06:36,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:36,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:36,043 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] [2022-01-11 06:06:36,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:06:36,043 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:36,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:36,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1069726302, now seen corresponding path program 1 times [2022-01-11 06:06:36,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:36,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976880776] [2022-01-11 06:06:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:36,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:36,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:36,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976880776] [2022-01-11 06:06:36,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976880776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:36,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:36,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:36,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839510097] [2022-01-11 06:06:36,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:36,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:36,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:36,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:36,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:36,106 INFO L87 Difference]: Start difference. First operand 3763 states and 5527 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:36,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:36,220 INFO L93 Difference]: Finished difference Result 7502 states and 11014 transitions. [2022-01-11 06:06:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:36,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:36,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:36,232 INFO L225 Difference]: With dead ends: 7502 [2022-01-11 06:06:36,232 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:36,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:36,242 INFO L933 BasicCegarLoop]: 2967 mSDtfsCounter, 2949 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2949 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:36,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2949 Valid, 2967 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:36,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:36,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.4670388091440723) internal successors, (5519), 3762 states have internal predecessors, (5519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:36,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5519 transitions. [2022-01-11 06:06:36,378 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5519 transitions. Word has length 175 [2022-01-11 06:06:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:36,378 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5519 transitions. [2022-01-11 06:06:36,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:36,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5519 transitions. [2022-01-11 06:06:36,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:36,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:36,380 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] [2022-01-11 06:06:36,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:06:36,380 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:36,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:36,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1094209662, now seen corresponding path program 1 times [2022-01-11 06:06:36,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:36,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147476333] [2022-01-11 06:06:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:36,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:36,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:36,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147476333] [2022-01-11 06:06:36,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147476333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:36,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:36,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:36,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623070139] [2022-01-11 06:06:36,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:36,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:36,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:36,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:36,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:36,462 INFO L87 Difference]: Start difference. First operand 3763 states and 5519 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:36,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:36,572 INFO L93 Difference]: Finished difference Result 7501 states and 10997 transitions. [2022-01-11 06:06:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:36,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:36,584 INFO L225 Difference]: With dead ends: 7501 [2022-01-11 06:06:36,585 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:36,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:36,591 INFO L933 BasicCegarLoop]: 2962 mSDtfsCounter, 2943 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2943 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:36,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2943 Valid, 2962 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:36,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:36,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.4649122807017543) internal successors, (5511), 3762 states have internal predecessors, (5511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5511 transitions. [2022-01-11 06:06:36,715 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5511 transitions. Word has length 175 [2022-01-11 06:06:36,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:36,717 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5511 transitions. [2022-01-11 06:06:36,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:36,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5511 transitions. [2022-01-11 06:06:36,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:36,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:36,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:06:36,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:06:36,722 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:36,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:36,722 INFO L85 PathProgramCache]: Analyzing trace with hash -844663202, now seen corresponding path program 1 times [2022-01-11 06:06:36,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:36,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96921319] [2022-01-11 06:06:36,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:36,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:36,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:36,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96921319] [2022-01-11 06:06:36,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96921319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:36,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:36,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:36,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213069265] [2022-01-11 06:06:36,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:36,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:36,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:36,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:36,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:36,789 INFO L87 Difference]: Start difference. First operand 3763 states and 5511 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:36,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:36,945 INFO L93 Difference]: Finished difference Result 7500 states and 10980 transitions. [2022-01-11 06:06:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:36,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:36,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:36,958 INFO L225 Difference]: With dead ends: 7500 [2022-01-11 06:06:36,958 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:36,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:36,966 INFO L933 BasicCegarLoop]: 2957 mSDtfsCounter, 2937 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2937 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:36,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2937 Valid, 2957 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:37,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:37,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.4627857522594365) internal successors, (5503), 3762 states have internal predecessors, (5503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:37,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5503 transitions. [2022-01-11 06:06:37,104 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5503 transitions. Word has length 175 [2022-01-11 06:06:37,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:37,104 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5503 transitions. [2022-01-11 06:06:37,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:37,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5503 transitions. [2022-01-11 06:06:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:37,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:37,106 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] [2022-01-11 06:06:37,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:06:37,106 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:37,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:37,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1171002494, now seen corresponding path program 1 times [2022-01-11 06:06:37,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:37,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997018510] [2022-01-11 06:06:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:37,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:37,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:37,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997018510] [2022-01-11 06:06:37,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997018510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:37,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:37,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:37,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983254895] [2022-01-11 06:06:37,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:37,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:37,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:37,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:37,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:37,149 INFO L87 Difference]: Start difference. First operand 3763 states and 5503 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:37,262 INFO L93 Difference]: Finished difference Result 7499 states and 10963 transitions. [2022-01-11 06:06:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:37,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:37,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:37,273 INFO L225 Difference]: With dead ends: 7499 [2022-01-11 06:06:37,274 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:37,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:37,281 INFO L933 BasicCegarLoop]: 2952 mSDtfsCounter, 2931 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2931 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:37,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2931 Valid, 2952 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:37,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:37,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.4606592238171185) internal successors, (5495), 3762 states have internal predecessors, (5495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:37,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5495 transitions. [2022-01-11 06:06:37,427 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5495 transitions. Word has length 175 [2022-01-11 06:06:37,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:37,427 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5495 transitions. [2022-01-11 06:06:37,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:37,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5495 transitions. [2022-01-11 06:06:37,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:37,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:37,429 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] [2022-01-11 06:06:37,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:06:37,430 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:37,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:37,430 INFO L85 PathProgramCache]: Analyzing trace with hash -980733346, now seen corresponding path program 1 times [2022-01-11 06:06:37,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:37,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099096087] [2022-01-11 06:06:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:37,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:37,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:37,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099096087] [2022-01-11 06:06:37,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099096087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:37,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:37,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:37,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659452353] [2022-01-11 06:06:37,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:37,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:37,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:37,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:37,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:37,475 INFO L87 Difference]: Start difference. First operand 3763 states and 5495 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:37,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:37,590 INFO L93 Difference]: Finished difference Result 7498 states and 10946 transitions. [2022-01-11 06:06:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:37,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:37,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:37,600 INFO L225 Difference]: With dead ends: 7498 [2022-01-11 06:06:37,600 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:37,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:37,606 INFO L933 BasicCegarLoop]: 2947 mSDtfsCounter, 2925 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2925 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:37,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2925 Valid, 2947 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:37,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:37,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.4585326953748006) internal successors, (5487), 3762 states have internal predecessors, (5487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5487 transitions. [2022-01-11 06:06:37,725 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5487 transitions. Word has length 175 [2022-01-11 06:06:37,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:37,725 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5487 transitions. [2022-01-11 06:06:37,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:37,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5487 transitions. [2022-01-11 06:06:37,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:37,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:37,727 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] [2022-01-11 06:06:37,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:06:37,727 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:37,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:37,727 INFO L85 PathProgramCache]: Analyzing trace with hash 612423806, now seen corresponding path program 1 times [2022-01-11 06:06:37,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:37,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796529472] [2022-01-11 06:06:37,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:37,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:37,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:37,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:37,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796529472] [2022-01-11 06:06:37,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796529472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:37,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:37,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:37,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372118497] [2022-01-11 06:06:37,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:37,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:37,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:37,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:37,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:37,765 INFO L87 Difference]: Start difference. First operand 3763 states and 5487 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:37,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:37,904 INFO L93 Difference]: Finished difference Result 7497 states and 10929 transitions. [2022-01-11 06:06:37,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:37,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:37,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:37,912 INFO L225 Difference]: With dead ends: 7497 [2022-01-11 06:06:37,912 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:37,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:37,918 INFO L933 BasicCegarLoop]: 2942 mSDtfsCounter, 2919 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2919 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:37,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2919 Valid, 2942 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:37,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:38,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:38,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.4564061669324828) internal successors, (5479), 3762 states have internal predecessors, (5479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:38,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5479 transitions. [2022-01-11 06:06:38,066 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5479 transitions. Word has length 175 [2022-01-11 06:06:38,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:38,067 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5479 transitions. [2022-01-11 06:06:38,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:38,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5479 transitions. [2022-01-11 06:06:38,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:38,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:38,068 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] [2022-01-11 06:06:38,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:06:38,069 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:38,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:38,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1691488674, now seen corresponding path program 1 times [2022-01-11 06:06:38,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:38,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835904679] [2022-01-11 06:06:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:38,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:38,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:38,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835904679] [2022-01-11 06:06:38,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835904679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:38,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:38,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:38,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557379558] [2022-01-11 06:06:38,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:38,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:38,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:38,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:38,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:38,118 INFO L87 Difference]: Start difference. First operand 3763 states and 5479 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:38,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:38,241 INFO L93 Difference]: Finished difference Result 7496 states and 10912 transitions. [2022-01-11 06:06:38,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:38,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:38,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:38,249 INFO L225 Difference]: With dead ends: 7496 [2022-01-11 06:06:38,250 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:38,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:38,255 INFO L933 BasicCegarLoop]: 2937 mSDtfsCounter, 2913 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2913 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:38,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2913 Valid, 2937 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:38,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:38,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:38,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.4542796384901648) internal successors, (5471), 3762 states have internal predecessors, (5471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5471 transitions. [2022-01-11 06:06:38,374 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5471 transitions. Word has length 175 [2022-01-11 06:06:38,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:38,374 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5471 transitions. [2022-01-11 06:06:38,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:38,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5471 transitions. [2022-01-11 06:06:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:38,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:38,376 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] [2022-01-11 06:06:38,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:06:38,376 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:38,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:38,377 INFO L85 PathProgramCache]: Analyzing trace with hash -241787778, now seen corresponding path program 1 times [2022-01-11 06:06:38,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:38,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566162109] [2022-01-11 06:06:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:38,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:38,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:38,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566162109] [2022-01-11 06:06:38,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566162109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:38,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:38,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:38,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252939117] [2022-01-11 06:06:38,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:38,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:38,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:38,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:38,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:38,428 INFO L87 Difference]: Start difference. First operand 3763 states and 5471 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:38,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:38,568 INFO L93 Difference]: Finished difference Result 7494 states and 10893 transitions. [2022-01-11 06:06:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:38,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:38,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:38,574 INFO L225 Difference]: With dead ends: 7494 [2022-01-11 06:06:38,575 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:38,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:38,579 INFO L933 BasicCegarLoop]: 2932 mSDtfsCounter, 2906 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2906 SdHoareTripleChecker+Valid, 2932 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:38,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2906 Valid, 2932 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:38,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.4521531100478469) internal successors, (5463), 3762 states have internal predecessors, (5463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5463 transitions. [2022-01-11 06:06:38,687 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5463 transitions. Word has length 175 [2022-01-11 06:06:38,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:38,688 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5463 transitions. [2022-01-11 06:06:38,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:38,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5463 transitions. [2022-01-11 06:06:38,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:38,689 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:38,689 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] [2022-01-11 06:06:38,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:06:38,689 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:38,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:38,690 INFO L85 PathProgramCache]: Analyzing trace with hash 278155934, now seen corresponding path program 1 times [2022-01-11 06:06:38,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:38,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035559068] [2022-01-11 06:06:38,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:38,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:38,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:38,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035559068] [2022-01-11 06:06:38,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035559068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:38,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:38,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:38,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423470715] [2022-01-11 06:06:38,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:38,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:38,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:38,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:38,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:38,729 INFO L87 Difference]: Start difference. First operand 3763 states and 5463 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:38,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:38,844 INFO L93 Difference]: Finished difference Result 7493 states and 10876 transitions. [2022-01-11 06:06:38,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:38,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:38,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:38,852 INFO L225 Difference]: With dead ends: 7493 [2022-01-11 06:06:38,852 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:38,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:38,857 INFO L933 BasicCegarLoop]: 2927 mSDtfsCounter, 2900 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2900 SdHoareTripleChecker+Valid, 2927 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:38,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2900 Valid, 2927 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:38,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:39,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.4500265816055289) internal successors, (5455), 3762 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:39,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5455 transitions. [2022-01-11 06:06:39,011 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5455 transitions. Word has length 175 [2022-01-11 06:06:39,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:39,011 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5455 transitions. [2022-01-11 06:06:39,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:39,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5455 transitions. [2022-01-11 06:06:39,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:39,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:39,013 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] [2022-01-11 06:06:39,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:06:39,013 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:39,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:39,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1644734338, now seen corresponding path program 1 times [2022-01-11 06:06:39,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:39,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339019278] [2022-01-11 06:06:39,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:39,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:39,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:39,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339019278] [2022-01-11 06:06:39,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339019278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:39,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:39,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:39,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967512053] [2022-01-11 06:06:39,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:39,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:39,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:39,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:39,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:39,057 INFO L87 Difference]: Start difference. First operand 3763 states and 5455 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:39,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:39,207 INFO L93 Difference]: Finished difference Result 7492 states and 10859 transitions. [2022-01-11 06:06:39,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:39,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:39,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:39,215 INFO L225 Difference]: With dead ends: 7492 [2022-01-11 06:06:39,215 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:39,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:39,223 INFO L933 BasicCegarLoop]: 2890 mSDtfsCounter, 2736 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2736 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:39,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2736 Valid, 3028 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:39,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:39,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:39,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.439925571504519) internal successors, (5417), 3762 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:39,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5417 transitions. [2022-01-11 06:06:39,357 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5417 transitions. Word has length 175 [2022-01-11 06:06:39,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:39,357 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5417 transitions. [2022-01-11 06:06:39,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5417 transitions. [2022-01-11 06:06:39,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:39,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:39,359 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] [2022-01-11 06:06:39,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:06:39,359 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:39,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:39,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1868758499, now seen corresponding path program 1 times [2022-01-11 06:06:39,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:39,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072715057] [2022-01-11 06:06:39,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:39,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:39,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:39,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:39,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072715057] [2022-01-11 06:06:39,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072715057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:39,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:39,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:39,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466699065] [2022-01-11 06:06:39,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:39,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:39,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:39,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:39,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:39,406 INFO L87 Difference]: Start difference. First operand 3763 states and 5417 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:39,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:39,577 INFO L93 Difference]: Finished difference Result 7491 states and 10782 transitions. [2022-01-11 06:06:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:39,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:39,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:39,585 INFO L225 Difference]: With dead ends: 7491 [2022-01-11 06:06:39,586 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:39,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:39,592 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 2715 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2715 SdHoareTripleChecker+Valid, 3006 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:39,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2715 Valid, 3006 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:39,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:39,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:39,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.4298245614035088) internal successors, (5379), 3762 states have internal predecessors, (5379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5379 transitions. [2022-01-11 06:06:39,719 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5379 transitions. Word has length 175 [2022-01-11 06:06:39,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:39,719 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5379 transitions. [2022-01-11 06:06:39,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5379 transitions. [2022-01-11 06:06:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:39,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:39,720 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] [2022-01-11 06:06:39,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:06:39,720 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:39,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:39,721 INFO L85 PathProgramCache]: Analyzing trace with hash -902613316, now seen corresponding path program 1 times [2022-01-11 06:06:39,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:39,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775208467] [2022-01-11 06:06:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:39,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:39,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:39,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:39,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775208467] [2022-01-11 06:06:39,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775208467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:39,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:39,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:39,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952956720] [2022-01-11 06:06:39,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:39,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:39,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:39,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:39,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:39,763 INFO L87 Difference]: Start difference. First operand 3763 states and 5379 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:39,916 INFO L93 Difference]: Finished difference Result 7490 states and 10705 transitions. [2022-01-11 06:06:39,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:39,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:39,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:39,924 INFO L225 Difference]: With dead ends: 7490 [2022-01-11 06:06:39,924 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:39,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:39,930 INFO L933 BasicCegarLoop]: 2848 mSDtfsCounter, 2694 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:39,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2694 Valid, 2984 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:39,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:40,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:40,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.4197235513024986) internal successors, (5341), 3762 states have internal predecessors, (5341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:40,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5341 transitions. [2022-01-11 06:06:40,106 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5341 transitions. Word has length 175 [2022-01-11 06:06:40,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:40,106 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5341 transitions. [2022-01-11 06:06:40,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:40,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5341 transitions. [2022-01-11 06:06:40,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:40,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:40,107 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] [2022-01-11 06:06:40,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:06:40,108 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:40,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:40,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1064309029, now seen corresponding path program 1 times [2022-01-11 06:06:40,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:40,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774250667] [2022-01-11 06:06:40,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:40,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:40,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:40,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774250667] [2022-01-11 06:06:40,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774250667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:40,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:40,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:40,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316113909] [2022-01-11 06:06:40,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:40,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:40,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:40,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:40,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:40,151 INFO L87 Difference]: Start difference. First operand 3763 states and 5341 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:40,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:40,325 INFO L93 Difference]: Finished difference Result 7489 states and 10628 transitions. [2022-01-11 06:06:40,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:40,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:40,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:40,333 INFO L225 Difference]: With dead ends: 7489 [2022-01-11 06:06:40,333 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:40,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:40,339 INFO L933 BasicCegarLoop]: 2827 mSDtfsCounter, 2673 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2673 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:40,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2673 Valid, 2962 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:40,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:40,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:40,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.4096225412014887) internal successors, (5303), 3762 states have internal predecessors, (5303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5303 transitions. [2022-01-11 06:06:40,466 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5303 transitions. Word has length 175 [2022-01-11 06:06:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:40,466 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5303 transitions. [2022-01-11 06:06:40,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:40,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5303 transitions. [2022-01-11 06:06:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:40,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:40,467 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] [2022-01-11 06:06:40,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:06:40,467 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:40,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash -124714502, now seen corresponding path program 1 times [2022-01-11 06:06:40,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:40,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270793268] [2022-01-11 06:06:40,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:40,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:40,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:40,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270793268] [2022-01-11 06:06:40,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270793268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:40,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:40,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:40,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081197133] [2022-01-11 06:06:40,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:40,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:40,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:40,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:40,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:40,516 INFO L87 Difference]: Start difference. First operand 3763 states and 5303 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:40,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:40,708 INFO L93 Difference]: Finished difference Result 7488 states and 10551 transitions. [2022-01-11 06:06:40,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:40,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:40,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:40,716 INFO L225 Difference]: With dead ends: 7488 [2022-01-11 06:06:40,716 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:40,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:40,722 INFO L933 BasicCegarLoop]: 2806 mSDtfsCounter, 2652 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2652 SdHoareTripleChecker+Valid, 2940 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:40,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2652 Valid, 2940 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:40,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:40,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.3995215311004785) internal successors, (5265), 3762 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5265 transitions. [2022-01-11 06:06:40,843 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5265 transitions. Word has length 175 [2022-01-11 06:06:40,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:40,843 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5265 transitions. [2022-01-11 06:06:40,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:40,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5265 transitions. [2022-01-11 06:06:40,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:40,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:40,844 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] [2022-01-11 06:06:40,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:06:40,844 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:40,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:40,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1858303847, now seen corresponding path program 1 times [2022-01-11 06:06:40,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:40,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537277330] [2022-01-11 06:06:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:40,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:40,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:40,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537277330] [2022-01-11 06:06:40,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537277330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:40,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:40,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:40,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900234598] [2022-01-11 06:06:40,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:40,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:40,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:40,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:40,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:40,887 INFO L87 Difference]: Start difference. First operand 3763 states and 5265 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:41,049 INFO L93 Difference]: Finished difference Result 7486 states and 10472 transitions. [2022-01-11 06:06:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:41,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:41,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:41,057 INFO L225 Difference]: With dead ends: 7486 [2022-01-11 06:06:41,057 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:41,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:41,063 INFO L933 BasicCegarLoop]: 2785 mSDtfsCounter, 2630 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2630 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:41,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2630 Valid, 2918 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:41,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:41,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.3894205209994683) internal successors, (5227), 3762 states have internal predecessors, (5227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5227 transitions. [2022-01-11 06:06:41,218 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5227 transitions. Word has length 175 [2022-01-11 06:06:41,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:41,218 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5227 transitions. [2022-01-11 06:06:41,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:41,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5227 transitions. [2022-01-11 06:06:41,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:41,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:41,220 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] [2022-01-11 06:06:41,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 06:06:41,220 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:41,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:41,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1645306440, now seen corresponding path program 1 times [2022-01-11 06:06:41,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:41,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044578347] [2022-01-11 06:06:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:41,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:41,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:41,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:41,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044578347] [2022-01-11 06:06:41,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044578347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:41,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:41,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:41,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631535572] [2022-01-11 06:06:41,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:41,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:41,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:41,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:41,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:41,261 INFO L87 Difference]: Start difference. First operand 3763 states and 5227 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:41,441 INFO L93 Difference]: Finished difference Result 7485 states and 10395 transitions. [2022-01-11 06:06:41,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:41,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:41,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:41,449 INFO L225 Difference]: With dead ends: 7485 [2022-01-11 06:06:41,449 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:41,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:41,454 INFO L933 BasicCegarLoop]: 2764 mSDtfsCounter, 2609 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2609 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:41,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2609 Valid, 2896 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:41,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.3793195108984582) internal successors, (5189), 3762 states have internal predecessors, (5189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5189 transitions. [2022-01-11 06:06:41,582 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5189 transitions. Word has length 175 [2022-01-11 06:06:41,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:41,582 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5189 transitions. [2022-01-11 06:06:41,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:41,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5189 transitions. [2022-01-11 06:06:41,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:41,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:41,583 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] [2022-01-11 06:06:41,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 06:06:41,583 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:41,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:41,584 INFO L85 PathProgramCache]: Analyzing trace with hash 370191831, now seen corresponding path program 1 times [2022-01-11 06:06:41,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:41,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933935038] [2022-01-11 06:06:41,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:41,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:41,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:41,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933935038] [2022-01-11 06:06:41,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933935038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:41,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:41,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:41,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968566748] [2022-01-11 06:06:41,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:41,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:41,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:41,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:41,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:41,623 INFO L87 Difference]: Start difference. First operand 3763 states and 5189 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:41,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:41,821 INFO L93 Difference]: Finished difference Result 7484 states and 10318 transitions. [2022-01-11 06:06:41,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:41,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:41,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:41,827 INFO L225 Difference]: With dead ends: 7484 [2022-01-11 06:06:41,828 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:41,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:41,832 INFO L933 BasicCegarLoop]: 2743 mSDtfsCounter, 2588 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2588 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:41,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2588 Valid, 2874 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:41,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:41,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:41,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.3692185007974482) internal successors, (5151), 3762 states have internal predecessors, (5151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:41,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5151 transitions. [2022-01-11 06:06:41,969 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5151 transitions. Word has length 175 [2022-01-11 06:06:41,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:41,969 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5151 transitions. [2022-01-11 06:06:41,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:41,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5151 transitions. [2022-01-11 06:06:41,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:41,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:41,971 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] [2022-01-11 06:06:41,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 06:06:41,971 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:41,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:41,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1415507594, now seen corresponding path program 1 times [2022-01-11 06:06:41,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:41,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352340078] [2022-01-11 06:06:41,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:41,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:42,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:42,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352340078] [2022-01-11 06:06:42,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352340078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:42,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:42,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:42,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850096078] [2022-01-11 06:06:42,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:42,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:42,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:42,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:42,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:42,025 INFO L87 Difference]: Start difference. First operand 3763 states and 5151 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:42,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:42,187 INFO L93 Difference]: Finished difference Result 7483 states and 10241 transitions. [2022-01-11 06:06:42,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:42,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:42,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:42,195 INFO L225 Difference]: With dead ends: 7483 [2022-01-11 06:06:42,195 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:42,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:42,200 INFO L933 BasicCegarLoop]: 2722 mSDtfsCounter, 2567 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2567 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:42,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2567 Valid, 2852 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:42,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:42,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.359117490696438) internal successors, (5113), 3762 states have internal predecessors, (5113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:42,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5113 transitions. [2022-01-11 06:06:42,432 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5113 transitions. Word has length 175 [2022-01-11 06:06:42,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:42,433 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5113 transitions. [2022-01-11 06:06:42,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:42,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5113 transitions. [2022-01-11 06:06:42,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:42,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:42,434 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] [2022-01-11 06:06:42,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 06:06:42,434 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:42,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:42,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1773748245, now seen corresponding path program 1 times [2022-01-11 06:06:42,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:42,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457142997] [2022-01-11 06:06:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:42,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:42,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:42,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457142997] [2022-01-11 06:06:42,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457142997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:42,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:42,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:42,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533141336] [2022-01-11 06:06:42,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:42,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:42,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:42,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:42,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:42,476 INFO L87 Difference]: Start difference. First operand 3763 states and 5113 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:42,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:42,694 INFO L93 Difference]: Finished difference Result 7482 states and 10164 transitions. [2022-01-11 06:06:42,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:42,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:42,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:42,706 INFO L225 Difference]: With dead ends: 7482 [2022-01-11 06:06:42,706 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:42,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:42,712 INFO L933 BasicCegarLoop]: 2701 mSDtfsCounter, 2546 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2546 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:42,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2546 Valid, 2830 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:42,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:42,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.349016480595428) internal successors, (5075), 3762 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:42,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5075 transitions. [2022-01-11 06:06:42,859 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5075 transitions. Word has length 175 [2022-01-11 06:06:42,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:42,859 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5075 transitions. [2022-01-11 06:06:42,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:42,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5075 transitions. [2022-01-11 06:06:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:42,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:42,860 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] [2022-01-11 06:06:42,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 06:06:42,860 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:42,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash -266358220, now seen corresponding path program 1 times [2022-01-11 06:06:42,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:42,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566465769] [2022-01-11 06:06:42,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:42,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:42,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:42,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566465769] [2022-01-11 06:06:42,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566465769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:42,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:42,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:42,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305698377] [2022-01-11 06:06:42,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:42,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:42,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:42,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:42,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:42,903 INFO L87 Difference]: Start difference. First operand 3763 states and 5075 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:43,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:43,106 INFO L93 Difference]: Finished difference Result 7481 states and 10087 transitions. [2022-01-11 06:06:43,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:43,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:43,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:43,112 INFO L225 Difference]: With dead ends: 7481 [2022-01-11 06:06:43,112 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:43,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:43,115 INFO L933 BasicCegarLoop]: 2680 mSDtfsCounter, 2525 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:43,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2525 Valid, 2808 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:43,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:43,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:43,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.338915470494418) internal successors, (5037), 3762 states have internal predecessors, (5037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:43,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5037 transitions. [2022-01-11 06:06:43,259 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5037 transitions. Word has length 175 [2022-01-11 06:06:43,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:43,259 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5037 transitions. [2022-01-11 06:06:43,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5037 transitions. [2022-01-11 06:06:43,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:43,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:43,260 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] [2022-01-11 06:06:43,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 06:06:43,260 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:43,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:43,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1794228051, now seen corresponding path program 1 times [2022-01-11 06:06:43,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:43,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870470711] [2022-01-11 06:06:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:43,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:43,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:43,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870470711] [2022-01-11 06:06:43,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870470711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:43,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:43,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:43,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002900615] [2022-01-11 06:06:43,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:43,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:43,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:43,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:43,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:43,305 INFO L87 Difference]: Start difference. First operand 3763 states and 5037 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:43,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:43,473 INFO L93 Difference]: Finished difference Result 7480 states and 10010 transitions. [2022-01-11 06:06:43,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:43,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:43,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:43,478 INFO L225 Difference]: With dead ends: 7480 [2022-01-11 06:06:43,479 INFO L226 Difference]: Without dead ends: 3763 [2022-01-11 06:06:43,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:43,483 INFO L933 BasicCegarLoop]: 2659 mSDtfsCounter, 2504 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:43,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2504 Valid, 2786 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:43,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2022-01-11 06:06:43,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3763. [2022-01-11 06:06:43,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 1.3288144603934078) internal successors, (4999), 3762 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:43,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 4999 transitions. [2022-01-11 06:06:43,632 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 4999 transitions. Word has length 175 [2022-01-11 06:06:43,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:43,633 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 4999 transitions. [2022-01-11 06:06:43,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:43,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 4999 transitions. [2022-01-11 06:06:43,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:43,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:43,634 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] [2022-01-11 06:06:43,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 06:06:43,634 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:43,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:43,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1387921422, now seen corresponding path program 1 times [2022-01-11 06:06:43,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:43,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099967416] [2022-01-11 06:06:43,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:43,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:43,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:43,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099967416] [2022-01-11 06:06:43,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099967416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:43,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:43,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:06:43,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834310286] [2022-01-11 06:06:43,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:43,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:06:43,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:43,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:06:43,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:06:43,694 INFO L87 Difference]: Start difference. First operand 3763 states and 4999 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:44,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:44,132 INFO L93 Difference]: Finished difference Result 8677 states and 11599 transitions. [2022-01-11 06:06:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:06:44,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:44,141 INFO L225 Difference]: With dead ends: 8677 [2022-01-11 06:06:44,141 INFO L226 Difference]: Without dead ends: 4975 [2022-01-11 06:06:44,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:06:44,149 INFO L933 BasicCegarLoop]: 2842 mSDtfsCounter, 7536 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7536 SdHoareTripleChecker+Valid, 5391 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 06:06:44,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7536 Valid, 5391 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:06:44,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4975 states. [2022-01-11 06:06:44,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4975 to 3769. [2022-01-11 06:06:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3769 states, 3768 states have (on average 1.3203290870488322) internal successors, (4975), 3768 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:44,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3769 states to 3769 states and 4975 transitions. [2022-01-11 06:06:44,385 INFO L78 Accepts]: Start accepts. Automaton has 3769 states and 4975 transitions. Word has length 175 [2022-01-11 06:06:44,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:44,385 INFO L470 AbstractCegarLoop]: Abstraction has 3769 states and 4975 transitions. [2022-01-11 06:06:44,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:44,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3769 states and 4975 transitions. [2022-01-11 06:06:44,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:44,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:44,386 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] [2022-01-11 06:06:44,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 06:06:44,387 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:44,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:44,387 INFO L85 PathProgramCache]: Analyzing trace with hash -101439117, now seen corresponding path program 1 times [2022-01-11 06:06:44,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:44,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261014296] [2022-01-11 06:06:44,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:44,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:44,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:44,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261014296] [2022-01-11 06:06:44,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261014296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:44,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:44,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:44,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078509949] [2022-01-11 06:06:44,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:44,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:44,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:44,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:44,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:44,451 INFO L87 Difference]: Start difference. First operand 3769 states and 4975 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:44,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:44,911 INFO L93 Difference]: Finished difference Result 10814 states and 14261 transitions. [2022-01-11 06:06:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:44,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:44,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:44,922 INFO L225 Difference]: With dead ends: 10814 [2022-01-11 06:06:44,922 INFO L226 Difference]: Without dead ends: 7129 [2022-01-11 06:06:44,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:44,928 INFO L933 BasicCegarLoop]: 2644 mSDtfsCounter, 2403 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 5045 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:44,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2403 Valid, 5045 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:44,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7129 states. [2022-01-11 06:06:45,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7129 to 7123. [2022-01-11 06:06:45,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7123 states, 7122 states have (on average 1.3143779837124403) internal successors, (9361), 7122 states have internal predecessors, (9361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:45,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7123 states to 7123 states and 9361 transitions. [2022-01-11 06:06:45,368 INFO L78 Accepts]: Start accepts. Automaton has 7123 states and 9361 transitions. Word has length 175 [2022-01-11 06:06:45,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:45,368 INFO L470 AbstractCegarLoop]: Abstraction has 7123 states and 9361 transitions. [2022-01-11 06:06:45,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:45,368 INFO L276 IsEmpty]: Start isEmpty. Operand 7123 states and 9361 transitions. [2022-01-11 06:06:45,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:45,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:45,369 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] [2022-01-11 06:06:45,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 06:06:45,369 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:45,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:45,370 INFO L85 PathProgramCache]: Analyzing trace with hash -357634766, now seen corresponding path program 1 times [2022-01-11 06:06:45,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:45,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827024326] [2022-01-11 06:06:45,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:45,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:45,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:45,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827024326] [2022-01-11 06:06:45,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827024326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:45,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:45,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:06:45,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185834201] [2022-01-11 06:06:45,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:45,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:06:45,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:45,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:06:45,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:06:45,423 INFO L87 Difference]: Start difference. First operand 7123 states and 9361 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:45,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:45,991 INFO L93 Difference]: Finished difference Result 16275 states and 21459 transitions. [2022-01-11 06:06:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:06:46,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:46,020 INFO L225 Difference]: With dead ends: 16275 [2022-01-11 06:06:46,021 INFO L226 Difference]: Without dead ends: 9247 [2022-01-11 06:06:46,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:06:46,030 INFO L933 BasicCegarLoop]: 2594 mSDtfsCounter, 6695 mSDsluCounter, 4524 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6695 SdHoareTripleChecker+Valid, 7118 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 06:06:46,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6695 Valid, 7118 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:06:46,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9247 states. [2022-01-11 06:06:46,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9247 to 7129. [2022-01-11 06:06:46,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7129 states, 7128 states have (on average 1.3058361391694726) internal successors, (9308), 7128 states have internal predecessors, (9308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7129 states to 7129 states and 9308 transitions. [2022-01-11 06:06:46,621 INFO L78 Accepts]: Start accepts. Automaton has 7129 states and 9308 transitions. Word has length 175 [2022-01-11 06:06:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:46,621 INFO L470 AbstractCegarLoop]: Abstraction has 7129 states and 9308 transitions. [2022-01-11 06:06:46,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 7129 states and 9308 transitions. [2022-01-11 06:06:46,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:46,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:46,623 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] [2022-01-11 06:06:46,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 06:06:46,623 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:46,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:46,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1496710771, now seen corresponding path program 1 times [2022-01-11 06:06:46,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:46,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934017390] [2022-01-11 06:06:46,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:46,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:46,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:46,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934017390] [2022-01-11 06:06:46,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934017390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:46,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:46,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:46,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886359320] [2022-01-11 06:06:46,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:46,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:46,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:46,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:46,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:46,673 INFO L87 Difference]: Start difference. First operand 7129 states and 9308 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:47,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:47,502 INFO L93 Difference]: Finished difference Result 20611 states and 26885 transitions. [2022-01-11 06:06:47,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:47,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:47,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:47,525 INFO L225 Difference]: With dead ends: 20611 [2022-01-11 06:06:47,525 INFO L226 Difference]: Without dead ends: 13621 [2022-01-11 06:06:47,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:47,533 INFO L933 BasicCegarLoop]: 2625 mSDtfsCounter, 2337 mSDsluCounter, 2386 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 5011 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:47,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2337 Valid, 5011 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:06:47,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13621 states. [2022-01-11 06:06:48,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13621 to 13611. [2022-01-11 06:06:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13611 states, 13610 states have (on average 1.2996326230712711) internal successors, (17688), 13610 states have internal predecessors, (17688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13611 states to 13611 states and 17688 transitions. [2022-01-11 06:06:48,320 INFO L78 Accepts]: Start accepts. Automaton has 13611 states and 17688 transitions. Word has length 175 [2022-01-11 06:06:48,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:48,321 INFO L470 AbstractCegarLoop]: Abstraction has 13611 states and 17688 transitions. [2022-01-11 06:06:48,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:48,321 INFO L276 IsEmpty]: Start isEmpty. Operand 13611 states and 17688 transitions. [2022-01-11 06:06:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:48,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:48,322 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] [2022-01-11 06:06:48,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 06:06:48,322 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:48,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:48,322 INFO L85 PathProgramCache]: Analyzing trace with hash -866853838, now seen corresponding path program 1 times [2022-01-11 06:06:48,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:48,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763679567] [2022-01-11 06:06:48,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:48,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:48,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:48,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763679567] [2022-01-11 06:06:48,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763679567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:48,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:48,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:48,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292685663] [2022-01-11 06:06:48,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:48,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:48,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:48,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:48,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:48,392 INFO L87 Difference]: Start difference. First operand 13611 states and 17688 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:49,249 INFO L93 Difference]: Finished difference Result 27199 states and 35338 transitions. [2022-01-11 06:06:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:49,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:49,273 INFO L225 Difference]: With dead ends: 27199 [2022-01-11 06:06:49,274 INFO L226 Difference]: Without dead ends: 13611 [2022-01-11 06:06:49,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:49,284 INFO L933 BasicCegarLoop]: 2632 mSDtfsCounter, 2502 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2502 SdHoareTripleChecker+Valid, 2632 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:49,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2502 Valid, 2632 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:49,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13611 states. [2022-01-11 06:06:49,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13611 to 13611. [2022-01-11 06:06:50,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13611 states, 13610 states have (on average 1.297722263041881) internal successors, (17662), 13610 states have internal predecessors, (17662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13611 states to 13611 states and 17662 transitions. [2022-01-11 06:06:50,024 INFO L78 Accepts]: Start accepts. Automaton has 13611 states and 17662 transitions. Word has length 175 [2022-01-11 06:06:50,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:50,025 INFO L470 AbstractCegarLoop]: Abstraction has 13611 states and 17662 transitions. [2022-01-11 06:06:50,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 13611 states and 17662 transitions. [2022-01-11 06:06:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:50,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:50,026 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] [2022-01-11 06:06:50,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 06:06:50,026 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:50,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 594726161, now seen corresponding path program 1 times [2022-01-11 06:06:50,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:50,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909040303] [2022-01-11 06:06:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:50,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:50,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:50,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:50,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909040303] [2022-01-11 06:06:50,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909040303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:50,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:50,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:50,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554942191] [2022-01-11 06:06:50,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:50,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:50,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:50,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:50,081 INFO L87 Difference]: Start difference. First operand 13611 states and 17662 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:51,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:51,078 INFO L93 Difference]: Finished difference Result 27191 states and 35278 transitions. [2022-01-11 06:06:51,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:51,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:51,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:51,099 INFO L225 Difference]: With dead ends: 27191 [2022-01-11 06:06:51,099 INFO L226 Difference]: Without dead ends: 13611 [2022-01-11 06:06:51,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:51,116 INFO L933 BasicCegarLoop]: 2627 mSDtfsCounter, 2489 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2489 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:51,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2489 Valid, 2627 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:51,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13611 states. [2022-01-11 06:06:51,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13611 to 13611. [2022-01-11 06:06:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13611 states, 13610 states have (on average 1.2958119030124908) internal successors, (17636), 13610 states have internal predecessors, (17636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:51,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13611 states to 13611 states and 17636 transitions. [2022-01-11 06:06:51,958 INFO L78 Accepts]: Start accepts. Automaton has 13611 states and 17636 transitions. Word has length 175 [2022-01-11 06:06:51,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:51,958 INFO L470 AbstractCegarLoop]: Abstraction has 13611 states and 17636 transitions. [2022-01-11 06:06:51,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:51,958 INFO L276 IsEmpty]: Start isEmpty. Operand 13611 states and 17636 transitions. [2022-01-11 06:06:51,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:51,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:51,959 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] [2022-01-11 06:06:51,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 06:06:51,959 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:51,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:51,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1415377680, now seen corresponding path program 1 times [2022-01-11 06:06:51,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:51,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578189610] [2022-01-11 06:06:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:51,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:52,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:52,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:52,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578189610] [2022-01-11 06:06:52,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578189610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:52,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:52,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:52,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723131100] [2022-01-11 06:06:52,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:52,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:52,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:52,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:52,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:52,012 INFO L87 Difference]: Start difference. First operand 13611 states and 17636 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:52,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:52,805 INFO L93 Difference]: Finished difference Result 27183 states and 35218 transitions. [2022-01-11 06:06:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:52,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:52,829 INFO L225 Difference]: With dead ends: 27183 [2022-01-11 06:06:52,830 INFO L226 Difference]: Without dead ends: 13611 [2022-01-11 06:06:52,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:52,848 INFO L933 BasicCegarLoop]: 2592 mSDtfsCounter, 2333 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2333 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:52,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2333 Valid, 2716 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13611 states. [2022-01-11 06:06:53,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13611 to 13611. [2022-01-11 06:06:53,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13611 states, 13610 states have (on average 1.2897869213813373) internal successors, (17554), 13610 states have internal predecessors, (17554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:53,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13611 states to 13611 states and 17554 transitions. [2022-01-11 06:06:53,725 INFO L78 Accepts]: Start accepts. Automaton has 13611 states and 17554 transitions. Word has length 175 [2022-01-11 06:06:53,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:53,725 INFO L470 AbstractCegarLoop]: Abstraction has 13611 states and 17554 transitions. [2022-01-11 06:06:53,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:53,725 INFO L276 IsEmpty]: Start isEmpty. Operand 13611 states and 17554 transitions. [2022-01-11 06:06:53,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:53,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:53,726 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] [2022-01-11 06:06:53,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 06:06:53,726 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:53,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:53,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1482384433, now seen corresponding path program 1 times [2022-01-11 06:06:53,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:53,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324630214] [2022-01-11 06:06:53,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:53,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:53,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:53,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324630214] [2022-01-11 06:06:53,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324630214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:53,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:53,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:53,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355886648] [2022-01-11 06:06:53,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:53,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:53,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:53,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:53,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:53,779 INFO L87 Difference]: Start difference. First operand 13611 states and 17554 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:54,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:54,655 INFO L93 Difference]: Finished difference Result 27175 states and 35046 transitions. [2022-01-11 06:06:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:54,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:54,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:54,679 INFO L225 Difference]: With dead ends: 27175 [2022-01-11 06:06:54,679 INFO L226 Difference]: Without dead ends: 13611 [2022-01-11 06:06:54,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:54,695 INFO L933 BasicCegarLoop]: 2572 mSDtfsCounter, 2306 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:54,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2306 Valid, 2695 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:06:54,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13611 states. [2022-01-11 06:06:55,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13611 to 13611. [2022-01-11 06:06:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13611 states, 13610 states have (on average 1.2837619397501836) internal successors, (17472), 13610 states have internal predecessors, (17472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13611 states to 13611 states and 17472 transitions. [2022-01-11 06:06:55,609 INFO L78 Accepts]: Start accepts. Automaton has 13611 states and 17472 transitions. Word has length 175 [2022-01-11 06:06:55,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:55,609 INFO L470 AbstractCegarLoop]: Abstraction has 13611 states and 17472 transitions. [2022-01-11 06:06:55,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:55,609 INFO L276 IsEmpty]: Start isEmpty. Operand 13611 states and 17472 transitions. [2022-01-11 06:06:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:06:55,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:55,610 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] [2022-01-11 06:06:55,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 06:06:55,611 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:55,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:55,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1992918610, now seen corresponding path program 1 times [2022-01-11 06:06:55,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:55,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900345532] [2022-01-11 06:06:55,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:55,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:55,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:55,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900345532] [2022-01-11 06:06:55,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900345532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:55,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:55,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:06:55,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707986042] [2022-01-11 06:06:55,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:55,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:55,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:55,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:55,667 INFO L87 Difference]: Start difference. First operand 13611 states and 17472 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:57,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:06:57,382 INFO L93 Difference]: Finished difference Result 40468 states and 51979 transitions. [2022-01-11 06:06:57,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:06:57,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:06:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:06:57,431 INFO L225 Difference]: With dead ends: 40468 [2022-01-11 06:06:57,431 INFO L226 Difference]: Without dead ends: 26906 [2022-01-11 06:06:57,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:57,452 INFO L933 BasicCegarLoop]: 2572 mSDtfsCounter, 2378 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 4916 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:06:57,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2378 Valid, 4916 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:06:57,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26906 states. [2022-01-11 06:06:59,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26906 to 26114. [2022-01-11 06:06:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26114 states, 26113 states have (on average 1.2808179833799258) internal successors, (33446), 26113 states have internal predecessors, (33446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:59,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26114 states to 26114 states and 33446 transitions. [2022-01-11 06:06:59,171 INFO L78 Accepts]: Start accepts. Automaton has 26114 states and 33446 transitions. Word has length 175 [2022-01-11 06:06:59,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:06:59,172 INFO L470 AbstractCegarLoop]: Abstraction has 26114 states and 33446 transitions. [2022-01-11 06:06:59,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:06:59,172 INFO L276 IsEmpty]: Start isEmpty. Operand 26114 states and 33446 transitions. [2022-01-11 06:06:59,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-01-11 06:06:59,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:06:59,186 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] [2022-01-11 06:06:59,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 06:06:59,187 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:06:59,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:06:59,187 INFO L85 PathProgramCache]: Analyzing trace with hash -939048876, now seen corresponding path program 1 times [2022-01-11 06:06:59,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:06:59,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864120937] [2022-01-11 06:06:59,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:06:59,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:06:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:06:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:06:59,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:06:59,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864120937] [2022-01-11 06:06:59,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864120937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:06:59,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:06:59,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:06:59,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850735144] [2022-01-11 06:06:59,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:06:59,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:06:59,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:06:59,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:06:59,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:06:59,253 INFO L87 Difference]: Start difference. First operand 26114 states and 33446 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:07:02,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:07:02,554 INFO L93 Difference]: Finished difference Result 77714 states and 99601 transitions. [2022-01-11 06:07:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:07:02,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 285 [2022-01-11 06:07:02,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:07:02,655 INFO L225 Difference]: With dead ends: 77714 [2022-01-11 06:07:02,655 INFO L226 Difference]: Without dead ends: 51655 [2022-01-11 06:07:02,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:07:02,689 INFO L933 BasicCegarLoop]: 2569 mSDtfsCounter, 2413 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 4913 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:07:02,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2413 Valid, 4913 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:07:02,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51655 states. [2022-01-11 06:07:06,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51655 to 50197. [2022-01-11 06:07:06,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50197 states, 50196 states have (on average 1.278508247669137) internal successors, (64176), 50196 states have internal predecessors, (64176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:07:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50197 states to 50197 states and 64176 transitions. [2022-01-11 06:07:06,324 INFO L78 Accepts]: Start accepts. Automaton has 50197 states and 64176 transitions. Word has length 285 [2022-01-11 06:07:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:07:06,325 INFO L470 AbstractCegarLoop]: Abstraction has 50197 states and 64176 transitions. [2022-01-11 06:07:06,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:07:06,325 INFO L276 IsEmpty]: Start isEmpty. Operand 50197 states and 64176 transitions. [2022-01-11 06:07:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-01-11 06:07:06,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:07:06,347 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] [2022-01-11 06:07:06,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-11 06:07:06,347 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:07:06,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:07:06,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2003378324, now seen corresponding path program 1 times [2022-01-11 06:07:06,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:07:06,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904231871] [2022-01-11 06:07:06,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:07:06,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:07:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:07:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:07:06,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:07:06,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904231871] [2022-01-11 06:07:06,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904231871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:07:06,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:07:06,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:07:06,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057862253] [2022-01-11 06:07:06,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:07:06,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:07:06,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:07:06,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:07:06,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:07:06,442 INFO L87 Difference]: Start difference. First operand 50197 states and 64176 transitions. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:07:11,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:07:11,733 INFO L93 Difference]: Finished difference Result 124733 states and 159941 transitions. [2022-01-11 06:07:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:07:11,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 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 285 [2022-01-11 06:07:11,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:07:11,862 INFO L225 Difference]: With dead ends: 124733 [2022-01-11 06:07:11,862 INFO L226 Difference]: Without dead ends: 74677 [2022-01-11 06:07:11,898 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 06:07:11,898 INFO L933 BasicCegarLoop]: 2521 mSDtfsCounter, 5267 mSDsluCounter, 7173 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5267 SdHoareTripleChecker+Valid, 9694 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 06:07:11,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5267 Valid, 9694 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:07:11,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74677 states. [2022-01-11 06:07:15,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74677 to 50245. [2022-01-11 06:07:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50245 states, 50244 states have (on average 1.269942679722952) internal successors, (63807), 50244 states have internal predecessors, (63807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:07:15,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50245 states to 50245 states and 63807 transitions. [2022-01-11 06:07:15,975 INFO L78 Accepts]: Start accepts. Automaton has 50245 states and 63807 transitions. Word has length 285 [2022-01-11 06:07:15,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:07:15,975 INFO L470 AbstractCegarLoop]: Abstraction has 50245 states and 63807 transitions. [2022-01-11 06:07:15,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:07:15,975 INFO L276 IsEmpty]: Start isEmpty. Operand 50245 states and 63807 transitions. [2022-01-11 06:07:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-01-11 06:07:15,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:07:15,991 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] [2022-01-11 06:07:15,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-11 06:07:15,992 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:07:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:07:16,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1811744214, now seen corresponding path program 1 times [2022-01-11 06:07:16,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:07:16,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126020278] [2022-01-11 06:07:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:07:16,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:07:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:07:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:07:16,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:07:16,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126020278] [2022-01-11 06:07:16,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126020278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:07:16,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:07:16,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:07:16,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564357944] [2022-01-11 06:07:16,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:07:16,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:07:16,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:07:16,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:07:16,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:07:16,088 INFO L87 Difference]: Start difference. First operand 50245 states and 63807 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:07:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:07:23,131 INFO L93 Difference]: Finished difference Result 147686 states and 186711 transitions. [2022-01-11 06:07:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:07:23,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 285 [2022-01-11 06:07:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:07:23,402 INFO L225 Difference]: With dead ends: 147686 [2022-01-11 06:07:23,402 INFO L226 Difference]: Without dead ends: 97612 [2022-01-11 06:07:23,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:07:23,453 INFO L933 BasicCegarLoop]: 4246 mSDtfsCounter, 2104 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2104 SdHoareTripleChecker+Valid, 6798 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 06:07:23,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2104 Valid, 6798 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:07:23,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97612 states. [2022-01-11 06:07:30,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97612 to 97610. [2022-01-11 06:07:30,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97610 states, 97609 states have (on average 1.2599350469731274) internal successors, (122981), 97609 states have internal predecessors, (122981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:07:30,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97610 states to 97610 states and 122981 transitions. [2022-01-11 06:07:30,722 INFO L78 Accepts]: Start accepts. Automaton has 97610 states and 122981 transitions. Word has length 285 [2022-01-11 06:07:30,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:07:30,722 INFO L470 AbstractCegarLoop]: Abstraction has 97610 states and 122981 transitions. [2022-01-11 06:07:30,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:07:30,723 INFO L276 IsEmpty]: Start isEmpty. Operand 97610 states and 122981 transitions. [2022-01-11 06:07:30,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-01-11 06:07:30,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:07:30,755 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] [2022-01-11 06:07:30,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-11 06:07:30,755 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:07:30,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:07:30,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1612401483, now seen corresponding path program 1 times [2022-01-11 06:07:30,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:07:30,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184023951] [2022-01-11 06:07:30,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:07:30,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:07:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:07:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 06:07:30,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:07:30,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184023951] [2022-01-11 06:07:30,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184023951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:07:30,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:07:30,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:07:30,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491893244] [2022-01-11 06:07:30,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:07:30,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:07:30,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:07:30,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:07:30,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:07:30,803 INFO L87 Difference]: Start difference. First operand 97610 states and 122981 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)