/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:19:25,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:19:25,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:19:25,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:19:25,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:19:25,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:19:25,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:19:25,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:19:25,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:19:25,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:19:25,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:19:25,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:19:25,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:19:25,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:19:25,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:19:25,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:19:25,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:19:25,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:19:25,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:19:25,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:19:25,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:19:25,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:19:25,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:19:25,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:19:25,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:19:25,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:19:25,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:19:25,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:19:25,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:19:25,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:19:25,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:19:25,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:19:25,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:19:25,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:19:25,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:19:25,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:19:25,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:19:25,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:19:25,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:19:25,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:19:25,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:19:25,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:19:25,699 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:19:25,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:19:25,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:19:25,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:19:25,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:19:25,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:19:25,701 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:19:25,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:19:25,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:19:25,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:19:25,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:19:25,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:19:25,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:19:25,701 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:19:25,701 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:19:25,702 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:19:25,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:19:25,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:19:25,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:19:25,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:19:25,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:19:25,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:19:25,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:19:25,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:19:25,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:19:25,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:19:25,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:19:25,703 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:19:25,703 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:19:25,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:19:25,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:19:25,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:19:25,707 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:19:25,707 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:19:25,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:19:25,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:19:25,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:19:25,900 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:19:25,901 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:19:25,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.06.cil.c [2022-01-11 00:19:25,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7905a14b7/03146bc6f4334d84b3c883456106a044/FLAG8a917f10c [2022-01-11 00:19:26,341 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:19:26,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.06.cil.c [2022-01-11 00:19:26,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7905a14b7/03146bc6f4334d84b3c883456106a044/FLAG8a917f10c [2022-01-11 00:19:26,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7905a14b7/03146bc6f4334d84b3c883456106a044 [2022-01-11 00:19:26,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:19:26,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:19:26,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:19:26,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:19:26,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:19:26,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:19:26" (1/1) ... [2022-01-11 00:19:26,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1624467c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:26, skipping insertion in model container [2022-01-11 00:19:26,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:19:26" (1/1) ... [2022-01-11 00:19:26,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:19:26,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:19:26,920 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/transmitter.06.cil.c[706,719] [2022-01-11 00:19:26,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:19:26,992 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:19:26,999 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/transmitter.06.cil.c[706,719] [2022-01-11 00:19:27,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:19:27,042 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:19:27,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:27 WrapperNode [2022-01-11 00:19:27,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:19:27,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:19:27,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:19:27,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:19:27,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:27" (1/1) ... [2022-01-11 00:19:27,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:27" (1/1) ... [2022-01-11 00:19:27,116 INFO L137 Inliner]: procedures = 40, calls = 48, calls flagged for inlining = 43, calls inlined = 104, statements flattened = 1522 [2022-01-11 00:19:27,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:19:27,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:19:27,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:19:27,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:19:27,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:27" (1/1) ... [2022-01-11 00:19:27,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:27" (1/1) ... [2022-01-11 00:19:27,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:27" (1/1) ... [2022-01-11 00:19:27,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:27" (1/1) ... [2022-01-11 00:19:27,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:27" (1/1) ... [2022-01-11 00:19:27,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:27" (1/1) ... [2022-01-11 00:19:27,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:27" (1/1) ... [2022-01-11 00:19:27,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:19:27,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:19:27,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:19:27,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:19:27,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:27" (1/1) ... [2022-01-11 00:19:27,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:19:27,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:19:27,237 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 00:19:27,253 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 00:19:27,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:19:27,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:19:27,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:19:27,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:19:27,385 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:19:27,386 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:19:28,283 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:19:28,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:19:28,297 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-11 00:19:28,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:19:28 BoogieIcfgContainer [2022-01-11 00:19:28,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:19:28,300 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:19:28,301 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:19:28,301 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:19:28,304 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:19:28" (1/1) ... [2022-01-11 00:19:28,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:19:28 BasicIcfg [2022-01-11 00:19:28,488 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:19:28,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:19:28,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:19:28,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:19:28,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:19:26" (1/4) ... [2022-01-11 00:19:28,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a7ef7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:19:28, skipping insertion in model container [2022-01-11 00:19:28,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:27" (2/4) ... [2022-01-11 00:19:28,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a7ef7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:19:28, skipping insertion in model container [2022-01-11 00:19:28,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:19:28" (3/4) ... [2022-01-11 00:19:28,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a7ef7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:19:28, skipping insertion in model container [2022-01-11 00:19:28,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:19:28" (4/4) ... [2022-01-11 00:19:28,494 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.06.cil.cTransformedIcfg [2022-01-11 00:19:28,497 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:19:28,497 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:19:28,541 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:19:28,550 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 00:19:28,551 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:19:28,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 634 states, 632 states have (on average 1.5300632911392404) internal successors, (967), 633 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:28,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:28,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:28,585 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] [2022-01-11 00:19:28,586 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:28,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:28,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1495817451, now seen corresponding path program 1 times [2022-01-11 00:19:28,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:28,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631522098] [2022-01-11 00:19:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:28,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:28,820 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 00:19:28,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:28,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631522098] [2022-01-11 00:19:28,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631522098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:28,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:28,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:28,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071838794] [2022-01-11 00:19:28,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:28,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:28,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:28,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:28,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:28,845 INFO L87 Difference]: Start difference. First operand has 634 states, 632 states have (on average 1.5300632911392404) internal successors, (967), 633 states have internal predecessors, (967), 0 states have call successors, (0), 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 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:28,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:28,979 INFO L93 Difference]: Finished difference Result 1747 states and 2662 transitions. [2022-01-11 00:19:28,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:28,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:28,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:28,994 INFO L225 Difference]: With dead ends: 1747 [2022-01-11 00:19:28,994 INFO L226 Difference]: Without dead ends: 1118 [2022-01-11 00:19:28,998 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 00:19:29,000 INFO L933 BasicCegarLoop]: 930 mSDtfsCounter, 847 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:29,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 1709 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:19:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2022-01-11 00:19:29,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1115. [2022-01-11 00:19:29,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4829443447037702) internal successors, (1652), 1114 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1652 transitions. [2022-01-11 00:19:29,063 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1652 transitions. Word has length 102 [2022-01-11 00:19:29,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:29,063 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1652 transitions. [2022-01-11 00:19:29,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1652 transitions. [2022-01-11 00:19:29,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:29,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:29,065 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] [2022-01-11 00:19:29,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:19:29,066 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:29,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:29,066 INFO L85 PathProgramCache]: Analyzing trace with hash -983841484, now seen corresponding path program 1 times [2022-01-11 00:19:29,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:29,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565682864] [2022-01-11 00:19:29,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:29,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:29,123 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 00:19:29,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:29,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565682864] [2022-01-11 00:19:29,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565682864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:29,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:29,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:29,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858116141] [2022-01-11 00:19:29,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:29,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:29,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:29,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:29,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:29,126 INFO L87 Difference]: Start difference. First operand 1115 states and 1652 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:29,168 INFO L93 Difference]: Finished difference Result 2216 states and 3282 transitions. [2022-01-11 00:19:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:29,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:29,174 INFO L225 Difference]: With dead ends: 2216 [2022-01-11 00:19:29,174 INFO L226 Difference]: Without dead ends: 1115 [2022-01-11 00:19:29,179 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 00:19:29,180 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 920 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 928 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 00:19:29,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 928 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:29,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-11 00:19:29,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-11 00:19:29,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4757630161579893) internal successors, (1644), 1114 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1644 transitions. [2022-01-11 00:19:29,221 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1644 transitions. Word has length 102 [2022-01-11 00:19:29,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:29,221 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1644 transitions. [2022-01-11 00:19:29,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1644 transitions. [2022-01-11 00:19:29,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:29,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:29,223 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] [2022-01-11 00:19:29,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:19:29,223 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:29,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash 742082102, now seen corresponding path program 1 times [2022-01-11 00:19:29,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:29,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376833070] [2022-01-11 00:19:29,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:29,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:29,297 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 00:19:29,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:29,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376833070] [2022-01-11 00:19:29,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376833070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:29,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:29,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:29,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721709348] [2022-01-11 00:19:29,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:29,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:29,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:29,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:29,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:29,300 INFO L87 Difference]: Start difference. First operand 1115 states and 1644 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:29,396 INFO L93 Difference]: Finished difference Result 2215 states and 3265 transitions. [2022-01-11 00:19:29,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:29,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:29,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:29,399 INFO L225 Difference]: With dead ends: 2215 [2022-01-11 00:19:29,400 INFO L226 Difference]: Without dead ends: 1115 [2022-01-11 00:19:29,402 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 00:19:29,406 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 914 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 923 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 00:19:29,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 923 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:29,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-11 00:19:29,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-11 00:19:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4685816876122082) internal successors, (1636), 1114 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1636 transitions. [2022-01-11 00:19:29,433 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1636 transitions. Word has length 102 [2022-01-11 00:19:29,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:29,434 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1636 transitions. [2022-01-11 00:19:29,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1636 transitions. [2022-01-11 00:19:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:29,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:29,440 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] [2022-01-11 00:19:29,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:19:29,440 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:29,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:29,441 INFO L85 PathProgramCache]: Analyzing trace with hash 382115060, now seen corresponding path program 1 times [2022-01-11 00:19:29,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:29,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125636458] [2022-01-11 00:19:29,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:29,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:29,500 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 00:19:29,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:29,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125636458] [2022-01-11 00:19:29,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125636458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:29,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:29,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:29,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648171782] [2022-01-11 00:19:29,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:29,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:29,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:29,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:29,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:29,502 INFO L87 Difference]: Start difference. First operand 1115 states and 1636 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:29,543 INFO L93 Difference]: Finished difference Result 2214 states and 3248 transitions. [2022-01-11 00:19:29,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:29,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:29,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:29,547 INFO L225 Difference]: With dead ends: 2214 [2022-01-11 00:19:29,548 INFO L226 Difference]: Without dead ends: 1115 [2022-01-11 00:19:29,549 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 00:19:29,553 INFO L933 BasicCegarLoop]: 918 mSDtfsCounter, 908 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 918 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 00:19:29,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 918 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:29,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-11 00:19:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-11 00:19:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4614003590664273) internal successors, (1628), 1114 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1628 transitions. [2022-01-11 00:19:29,582 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1628 transitions. Word has length 102 [2022-01-11 00:19:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:29,582 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1628 transitions. [2022-01-11 00:19:29,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1628 transitions. [2022-01-11 00:19:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:29,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:29,583 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] [2022-01-11 00:19:29,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:19:29,583 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:29,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:29,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1707706762, now seen corresponding path program 1 times [2022-01-11 00:19:29,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:29,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331976727] [2022-01-11 00:19:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:29,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:29,629 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 00:19:29,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:29,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331976727] [2022-01-11 00:19:29,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331976727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:29,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:29,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:29,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532173503] [2022-01-11 00:19:29,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:29,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:29,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:29,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:29,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:29,630 INFO L87 Difference]: Start difference. First operand 1115 states and 1628 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:29,668 INFO L93 Difference]: Finished difference Result 2213 states and 3231 transitions. [2022-01-11 00:19:29,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:29,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:29,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:29,686 INFO L225 Difference]: With dead ends: 2213 [2022-01-11 00:19:29,686 INFO L226 Difference]: Without dead ends: 1115 [2022-01-11 00:19:29,688 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 00:19:29,689 INFO L933 BasicCegarLoop]: 913 mSDtfsCounter, 902 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 913 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 00:19:29,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 913 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:29,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-11 00:19:29,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-11 00:19:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4542190305206464) internal successors, (1620), 1114 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1620 transitions. [2022-01-11 00:19:29,727 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1620 transitions. Word has length 102 [2022-01-11 00:19:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:29,727 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1620 transitions. [2022-01-11 00:19:29,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1620 transitions. [2022-01-11 00:19:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:29,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:29,734 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] [2022-01-11 00:19:29,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:19:29,734 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:29,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:29,734 INFO L85 PathProgramCache]: Analyzing trace with hash -528194380, now seen corresponding path program 1 times [2022-01-11 00:19:29,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:29,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959704238] [2022-01-11 00:19:29,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:29,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:29,777 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 00:19:29,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:29,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959704238] [2022-01-11 00:19:29,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959704238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:29,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:29,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:29,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898773237] [2022-01-11 00:19:29,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:29,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:29,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:29,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:29,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:29,780 INFO L87 Difference]: Start difference. First operand 1115 states and 1620 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:29,827 INFO L93 Difference]: Finished difference Result 2211 states and 3212 transitions. [2022-01-11 00:19:29,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:29,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:29,830 INFO L225 Difference]: With dead ends: 2211 [2022-01-11 00:19:29,831 INFO L226 Difference]: Without dead ends: 1115 [2022-01-11 00:19:29,834 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 00:19:29,835 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 895 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 908 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 00:19:29,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 908 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-11 00:19:29,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-11 00:19:29,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4470377019748653) internal successors, (1612), 1114 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1612 transitions. [2022-01-11 00:19:29,867 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1612 transitions. Word has length 102 [2022-01-11 00:19:29,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:29,867 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1612 transitions. [2022-01-11 00:19:29,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1612 transitions. [2022-01-11 00:19:29,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:29,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:29,868 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] [2022-01-11 00:19:29,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:19:29,868 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:29,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:29,869 INFO L85 PathProgramCache]: Analyzing trace with hash 424987250, now seen corresponding path program 1 times [2022-01-11 00:19:29,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:29,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505997673] [2022-01-11 00:19:29,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:29,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:29,903 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 00:19:29,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:29,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505997673] [2022-01-11 00:19:29,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505997673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:29,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:29,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:29,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983385861] [2022-01-11 00:19:29,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:29,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:29,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:29,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:29,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:29,905 INFO L87 Difference]: Start difference. First operand 1115 states and 1612 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:29,989 INFO L93 Difference]: Finished difference Result 2210 states and 3195 transitions. [2022-01-11 00:19:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:29,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:29,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:29,993 INFO L225 Difference]: With dead ends: 2210 [2022-01-11 00:19:29,994 INFO L226 Difference]: Without dead ends: 1115 [2022-01-11 00:19:29,995 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 00:19:29,996 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 809 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:29,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 955 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:29,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-11 00:19:30,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-11 00:19:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4272890484739678) internal successors, (1590), 1114 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1590 transitions. [2022-01-11 00:19:30,030 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1590 transitions. Word has length 102 [2022-01-11 00:19:30,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:30,030 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1590 transitions. [2022-01-11 00:19:30,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1590 transitions. [2022-01-11 00:19:30,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:30,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:30,031 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] [2022-01-11 00:19:30,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:19:30,031 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:30,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:30,032 INFO L85 PathProgramCache]: Analyzing trace with hash 363148437, now seen corresponding path program 1 times [2022-01-11 00:19:30,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:30,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851498277] [2022-01-11 00:19:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:30,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:30,074 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 00:19:30,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:30,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851498277] [2022-01-11 00:19:30,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851498277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:30,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:30,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:30,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681037552] [2022-01-11 00:19:30,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:30,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:30,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:30,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:30,076 INFO L87 Difference]: Start difference. First operand 1115 states and 1590 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:30,131 INFO L93 Difference]: Finished difference Result 2209 states and 3150 transitions. [2022-01-11 00:19:30,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:30,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:30,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:30,135 INFO L225 Difference]: With dead ends: 2209 [2022-01-11 00:19:30,135 INFO L226 Difference]: Without dead ends: 1115 [2022-01-11 00:19:30,137 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 00:19:30,137 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 796 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:30,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 941 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:30,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-11 00:19:30,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-11 00:19:30,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.40754039497307) internal successors, (1568), 1114 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1568 transitions. [2022-01-11 00:19:30,171 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1568 transitions. Word has length 102 [2022-01-11 00:19:30,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:30,171 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1568 transitions. [2022-01-11 00:19:30,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1568 transitions. [2022-01-11 00:19:30,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:30,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:30,172 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] [2022-01-11 00:19:30,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:19:30,173 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:30,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:30,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1414529484, now seen corresponding path program 1 times [2022-01-11 00:19:30,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:30,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715610901] [2022-01-11 00:19:30,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:30,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:30,197 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 00:19:30,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:30,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715610901] [2022-01-11 00:19:30,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715610901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:30,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:30,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:30,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156213054] [2022-01-11 00:19:30,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:30,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:30,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:30,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:30,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:30,199 INFO L87 Difference]: Start difference. First operand 1115 states and 1568 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:30,261 INFO L93 Difference]: Finished difference Result 2208 states and 3105 transitions. [2022-01-11 00:19:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:30,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:30,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:30,265 INFO L225 Difference]: With dead ends: 2208 [2022-01-11 00:19:30,265 INFO L226 Difference]: Without dead ends: 1115 [2022-01-11 00:19:30,267 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 00:19:30,268 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 783 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:30,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 927 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:30,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-11 00:19:30,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-11 00:19:30,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.3877917414721723) internal successors, (1546), 1114 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1546 transitions. [2022-01-11 00:19:30,310 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1546 transitions. Word has length 102 [2022-01-11 00:19:30,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:30,310 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1546 transitions. [2022-01-11 00:19:30,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1546 transitions. [2022-01-11 00:19:30,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:30,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:30,311 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] [2022-01-11 00:19:30,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:19:30,311 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:30,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:30,312 INFO L85 PathProgramCache]: Analyzing trace with hash -395392425, now seen corresponding path program 1 times [2022-01-11 00:19:30,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:30,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662946270] [2022-01-11 00:19:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:30,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:30,357 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 00:19:30,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:30,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662946270] [2022-01-11 00:19:30,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662946270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:30,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:30,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:30,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503540332] [2022-01-11 00:19:30,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:30,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:30,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:30,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:30,358 INFO L87 Difference]: Start difference. First operand 1115 states and 1546 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:30,427 INFO L93 Difference]: Finished difference Result 2207 states and 3060 transitions. [2022-01-11 00:19:30,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:30,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:30,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:30,430 INFO L225 Difference]: With dead ends: 2207 [2022-01-11 00:19:30,430 INFO L226 Difference]: Without dead ends: 1115 [2022-01-11 00:19:30,432 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 00:19:30,432 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 770 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:30,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 913 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:30,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-11 00:19:30,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-11 00:19:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.3680430879712746) internal successors, (1524), 1114 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1524 transitions. [2022-01-11 00:19:30,470 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1524 transitions. Word has length 102 [2022-01-11 00:19:30,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:30,470 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1524 transitions. [2022-01-11 00:19:30,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1524 transitions. [2022-01-11 00:19:30,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:30,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:30,472 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] [2022-01-11 00:19:30,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:19:30,472 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:30,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:30,473 INFO L85 PathProgramCache]: Analyzing trace with hash 2001900790, now seen corresponding path program 1 times [2022-01-11 00:19:30,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:30,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293840527] [2022-01-11 00:19:30,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:30,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:30,503 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 00:19:30,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:30,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293840527] [2022-01-11 00:19:30,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293840527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:30,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:30,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:30,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905038475] [2022-01-11 00:19:30,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:30,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:30,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:30,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:30,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:30,505 INFO L87 Difference]: Start difference. First operand 1115 states and 1524 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:30,560 INFO L93 Difference]: Finished difference Result 2206 states and 3015 transitions. [2022-01-11 00:19:30,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:30,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:30,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:30,563 INFO L225 Difference]: With dead ends: 2206 [2022-01-11 00:19:30,563 INFO L226 Difference]: Without dead ends: 1115 [2022-01-11 00:19:30,565 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 00:19:30,565 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 757 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:30,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 899 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:30,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-11 00:19:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-11 00:19:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.3482944344703771) internal successors, (1502), 1114 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1502 transitions. [2022-01-11 00:19:30,602 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1502 transitions. Word has length 102 [2022-01-11 00:19:30,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:30,602 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1502 transitions. [2022-01-11 00:19:30,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1502 transitions. [2022-01-11 00:19:30,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:30,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:30,603 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] [2022-01-11 00:19:30,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:19:30,603 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:30,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:30,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1218043111, now seen corresponding path program 1 times [2022-01-11 00:19:30,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:30,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460546880] [2022-01-11 00:19:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:30,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:19:30,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:30,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460546880] [2022-01-11 00:19:30,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460546880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:30,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:30,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:30,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565302971] [2022-01-11 00:19:30,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:30,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:30,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:30,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:30,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:30,629 INFO L87 Difference]: Start difference. First operand 1115 states and 1502 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:30,693 INFO L93 Difference]: Finished difference Result 2205 states and 2970 transitions. [2022-01-11 00:19:30,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:30,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:30,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:30,697 INFO L225 Difference]: With dead ends: 2205 [2022-01-11 00:19:30,697 INFO L226 Difference]: Without dead ends: 1115 [2022-01-11 00:19:30,698 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 00:19:30,699 INFO L933 BasicCegarLoop]: 822 mSDtfsCounter, 744 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:30,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 885 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:30,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-11 00:19:30,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-11 00:19:30,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.3285457809694794) internal successors, (1480), 1114 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1480 transitions. [2022-01-11 00:19:30,734 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1480 transitions. Word has length 102 [2022-01-11 00:19:30,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:30,734 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1480 transitions. [2022-01-11 00:19:30,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1480 transitions. [2022-01-11 00:19:30,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:30,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:30,735 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] [2022-01-11 00:19:30,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:19:30,735 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:30,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:30,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1074597560, now seen corresponding path program 1 times [2022-01-11 00:19:30,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:30,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724727389] [2022-01-11 00:19:30,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:30,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:30,793 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 00:19:30,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:30,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724727389] [2022-01-11 00:19:30,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724727389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:30,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:30,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:19:30,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829309099] [2022-01-11 00:19:30,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:30,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:19:30,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:30,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:19:30,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:19:30,794 INFO L87 Difference]: Start difference. First operand 1115 states and 1480 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:30,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:30,969 INFO L93 Difference]: Finished difference Result 2785 states and 3728 transitions. [2022-01-11 00:19:30,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:19:30,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:30,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:30,975 INFO L225 Difference]: With dead ends: 2785 [2022-01-11 00:19:30,975 INFO L226 Difference]: Without dead ends: 1709 [2022-01-11 00:19:30,977 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 00:19:30,978 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 2223 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:30,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2223 Valid, 2184 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:19:30,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2022-01-11 00:19:31,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1121. [2022-01-11 00:19:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1120 states have (on average 1.3142857142857143) internal successors, (1472), 1120 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:31,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1472 transitions. [2022-01-11 00:19:31,048 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1472 transitions. Word has length 102 [2022-01-11 00:19:31,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:31,049 INFO L470 AbstractCegarLoop]: Abstraction has 1121 states and 1472 transitions. [2022-01-11 00:19:31,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:31,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1472 transitions. [2022-01-11 00:19:31,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:31,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:31,050 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] [2022-01-11 00:19:31,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:19:31,050 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:31,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:31,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1438869801, now seen corresponding path program 1 times [2022-01-11 00:19:31,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:31,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96144343] [2022-01-11 00:19:31,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:31,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:31,105 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 00:19:31,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:31,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96144343] [2022-01-11 00:19:31,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96144343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:31,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:31,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:19:31,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380299177] [2022-01-11 00:19:31,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:31,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:19:31,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:31,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:19:31,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:19:31,107 INFO L87 Difference]: Start difference. First operand 1121 states and 1472 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:31,275 INFO L93 Difference]: Finished difference Result 3118 states and 4122 transitions. [2022-01-11 00:19:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:19:31,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:31,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:31,282 INFO L225 Difference]: With dead ends: 3118 [2022-01-11 00:19:31,282 INFO L226 Difference]: Without dead ends: 2071 [2022-01-11 00:19:31,284 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 00:19:31,284 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 1709 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:31,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1709 Valid, 2979 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:19:31,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2022-01-11 00:19:31,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1127. [2022-01-11 00:19:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 1.300177619893428) internal successors, (1464), 1126 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1464 transitions. [2022-01-11 00:19:31,357 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1464 transitions. Word has length 102 [2022-01-11 00:19:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:31,357 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1464 transitions. [2022-01-11 00:19:31,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:31,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1464 transitions. [2022-01-11 00:19:31,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:31,358 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:31,358 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] [2022-01-11 00:19:31,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:19:31,358 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:31,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:31,359 INFO L85 PathProgramCache]: Analyzing trace with hash 511430454, now seen corresponding path program 1 times [2022-01-11 00:19:31,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:31,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826445584] [2022-01-11 00:19:31,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:31,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:31,398 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 00:19:31,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:31,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826445584] [2022-01-11 00:19:31,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826445584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:31,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:31,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:31,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323230001] [2022-01-11 00:19:31,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:31,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:31,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:31,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:31,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:31,399 INFO L87 Difference]: Start difference. First operand 1127 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:31,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:31,460 INFO L93 Difference]: Finished difference Result 2236 states and 2902 transitions. [2022-01-11 00:19:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:31,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:31,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:31,463 INFO L225 Difference]: With dead ends: 2236 [2022-01-11 00:19:31,464 INFO L226 Difference]: Without dead ends: 1127 [2022-01-11 00:19:31,466 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 00:19:31,467 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 741 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 809 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 00:19:31,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 809 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:31,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-01-11 00:19:31,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1127. [2022-01-11 00:19:31,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 1.2930728241563054) internal successors, (1456), 1126 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:31,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1456 transitions. [2022-01-11 00:19:31,524 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1456 transitions. Word has length 102 [2022-01-11 00:19:31,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:31,524 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1456 transitions. [2022-01-11 00:19:31,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:31,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1456 transitions. [2022-01-11 00:19:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:31,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:31,525 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] [2022-01-11 00:19:31,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:19:31,525 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:31,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:31,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1204532151, now seen corresponding path program 1 times [2022-01-11 00:19:31,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:31,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058440114] [2022-01-11 00:19:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:31,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:31,563 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 00:19:31,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:31,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058440114] [2022-01-11 00:19:31,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058440114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:31,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:31,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:31,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870606175] [2022-01-11 00:19:31,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:31,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:31,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:31,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:31,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:31,566 INFO L87 Difference]: Start difference. First operand 1127 states and 1456 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:31,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:31,730 INFO L93 Difference]: Finished difference Result 3227 states and 4147 transitions. [2022-01-11 00:19:31,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:31,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:31,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:31,736 INFO L225 Difference]: With dead ends: 3227 [2022-01-11 00:19:31,736 INFO L226 Difference]: Without dead ends: 2189 [2022-01-11 00:19:31,738 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 00:19:31,738 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 686 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:31,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 1600 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:31,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2022-01-11 00:19:31,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2088. [2022-01-11 00:19:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 2087 states have (on average 1.2779108768567322) internal successors, (2667), 2087 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 2667 transitions. [2022-01-11 00:19:31,901 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 2667 transitions. Word has length 102 [2022-01-11 00:19:31,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:31,902 INFO L470 AbstractCegarLoop]: Abstraction has 2088 states and 2667 transitions. [2022-01-11 00:19:31,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:31,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 2667 transitions. [2022-01-11 00:19:31,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-11 00:19:31,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:31,903 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] [2022-01-11 00:19:31,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:19:31,903 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:31,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:31,903 INFO L85 PathProgramCache]: Analyzing trace with hash 717353359, now seen corresponding path program 1 times [2022-01-11 00:19:31,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:31,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577466125] [2022-01-11 00:19:31,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:31,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:31,937 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 00:19:31,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:31,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577466125] [2022-01-11 00:19:31,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577466125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:31,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:31,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:31,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489568628] [2022-01-11 00:19:31,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:31,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:31,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:31,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:31,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:31,939 INFO L87 Difference]: Start difference. First operand 2088 states and 2667 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:32,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:32,145 INFO L93 Difference]: Finished difference Result 5826 states and 7427 transitions. [2022-01-11 00:19:32,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:32,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-01-11 00:19:32,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:32,155 INFO L225 Difference]: With dead ends: 5826 [2022-01-11 00:19:32,155 INFO L226 Difference]: Without dead ends: 3911 [2022-01-11 00:19:32,157 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 00:19:32,157 INFO L933 BasicCegarLoop]: 1128 mSDtfsCounter, 617 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:32,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 1922 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:32,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3911 states. [2022-01-11 00:19:32,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3911 to 3908. [2022-01-11 00:19:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3908 states, 3907 states have (on average 1.2690043511645763) internal successors, (4958), 3907 states have internal predecessors, (4958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3908 states to 3908 states and 4958 transitions. [2022-01-11 00:19:32,322 INFO L78 Accepts]: Start accepts. Automaton has 3908 states and 4958 transitions. Word has length 103 [2022-01-11 00:19:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:32,322 INFO L470 AbstractCegarLoop]: Abstraction has 3908 states and 4958 transitions. [2022-01-11 00:19:32,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:32,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3908 states and 4958 transitions. [2022-01-11 00:19:32,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-11 00:19:32,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:32,323 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] [2022-01-11 00:19:32,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:19:32,324 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:32,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:32,324 INFO L85 PathProgramCache]: Analyzing trace with hash -235848274, now seen corresponding path program 1 times [2022-01-11 00:19:32,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:32,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911977767] [2022-01-11 00:19:32,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:32,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:32,342 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 00:19:32,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:32,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911977767] [2022-01-11 00:19:32,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911977767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:32,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:32,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:32,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921366371] [2022-01-11 00:19:32,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:32,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:32,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:32,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:32,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:32,343 INFO L87 Difference]: Start difference. First operand 3908 states and 4958 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:32,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:32,505 INFO L93 Difference]: Finished difference Result 7477 states and 9506 transitions. [2022-01-11 00:19:32,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:32,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-01-11 00:19:32,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:32,516 INFO L225 Difference]: With dead ends: 7477 [2022-01-11 00:19:32,516 INFO L226 Difference]: Without dead ends: 3742 [2022-01-11 00:19:32,520 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 00:19:32,520 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 808 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:32,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 812 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:32,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2022-01-11 00:19:32,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3742. [2022-01-11 00:19:32,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 1.2713178294573644) internal successors, (4756), 3741 states have internal predecessors, (4756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 4756 transitions. [2022-01-11 00:19:32,687 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 4756 transitions. Word has length 103 [2022-01-11 00:19:32,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:32,687 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 4756 transitions. [2022-01-11 00:19:32,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:32,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 4756 transitions. [2022-01-11 00:19:32,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-11 00:19:32,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:32,688 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] [2022-01-11 00:19:32,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:19:32,688 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:32,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:32,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1139650719, now seen corresponding path program 1 times [2022-01-11 00:19:32,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:32,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712470165] [2022-01-11 00:19:32,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:32,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:32,714 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 00:19:32,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:32,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712470165] [2022-01-11 00:19:32,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712470165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:32,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:32,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:32,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306984575] [2022-01-11 00:19:32,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:32,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:32,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:32,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:32,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:32,715 INFO L87 Difference]: Start difference. First operand 3742 states and 4756 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:33,012 INFO L93 Difference]: Finished difference Result 10820 states and 13732 transitions. [2022-01-11 00:19:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:33,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-11 00:19:33,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:33,026 INFO L225 Difference]: With dead ends: 10820 [2022-01-11 00:19:33,026 INFO L226 Difference]: Without dead ends: 7251 [2022-01-11 00:19:33,031 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 00:19:33,032 INFO L933 BasicCegarLoop]: 941 mSDtfsCounter, 688 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:33,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 1725 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:33,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7251 states. [2022-01-11 00:19:33,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7251 to 6992. [2022-01-11 00:19:33,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6992 states, 6991 states have (on average 1.2656272350164497) internal successors, (8848), 6991 states have internal predecessors, (8848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:33,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6992 states to 6992 states and 8848 transitions. [2022-01-11 00:19:33,374 INFO L78 Accepts]: Start accepts. Automaton has 6992 states and 8848 transitions. Word has length 104 [2022-01-11 00:19:33,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:33,374 INFO L470 AbstractCegarLoop]: Abstraction has 6992 states and 8848 transitions. [2022-01-11 00:19:33,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:33,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6992 states and 8848 transitions. [2022-01-11 00:19:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-11 00:19:33,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:33,376 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] [2022-01-11 00:19:33,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:19:33,377 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:33,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:33,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1621398435, now seen corresponding path program 1 times [2022-01-11 00:19:33,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:33,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280526587] [2022-01-11 00:19:33,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:33,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:33,406 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 00:19:33,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:33,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280526587] [2022-01-11 00:19:33,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280526587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:33,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:33,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:33,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176845557] [2022-01-11 00:19:33,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:33,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:33,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:33,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:33,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:33,407 INFO L87 Difference]: Start difference. First operand 6992 states and 8848 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:33,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:33,709 INFO L93 Difference]: Finished difference Result 13733 states and 17392 transitions. [2022-01-11 00:19:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:33,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-11 00:19:33,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:33,723 INFO L225 Difference]: With dead ends: 13733 [2022-01-11 00:19:33,723 INFO L226 Difference]: Without dead ends: 6828 [2022-01-11 00:19:33,731 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 00:19:33,731 INFO L933 BasicCegarLoop]: 811 mSDtfsCounter, 806 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:33,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 811 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:33,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6828 states. [2022-01-11 00:19:34,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6828 to 6828. [2022-01-11 00:19:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6828 states, 6827 states have (on average 1.2670279771495532) internal successors, (8650), 6827 states have internal predecessors, (8650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:34,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6828 states to 6828 states and 8650 transitions. [2022-01-11 00:19:34,052 INFO L78 Accepts]: Start accepts. Automaton has 6828 states and 8650 transitions. Word has length 104 [2022-01-11 00:19:34,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:34,052 INFO L470 AbstractCegarLoop]: Abstraction has 6828 states and 8650 transitions. [2022-01-11 00:19:34,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:34,052 INFO L276 IsEmpty]: Start isEmpty. Operand 6828 states and 8650 transitions. [2022-01-11 00:19:34,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-11 00:19:34,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:34,054 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] [2022-01-11 00:19:34,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:19:34,054 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:34,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:34,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1418390082, now seen corresponding path program 1 times [2022-01-11 00:19:34,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:34,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914055295] [2022-01-11 00:19:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:34,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:34,080 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 00:19:34,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:34,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914055295] [2022-01-11 00:19:34,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914055295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:34,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:34,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:34,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107877586] [2022-01-11 00:19:34,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:34,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:34,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:34,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:34,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:34,081 INFO L87 Difference]: Start difference. First operand 6828 states and 8650 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:34,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:34,667 INFO L93 Difference]: Finished difference Result 19770 states and 25014 transitions. [2022-01-11 00:19:34,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:34,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-11 00:19:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:34,688 INFO L225 Difference]: With dead ends: 19770 [2022-01-11 00:19:34,688 INFO L226 Difference]: Without dead ends: 13115 [2022-01-11 00:19:34,696 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 00:19:34,696 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 688 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:34,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 1705 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:34,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13115 states. [2022-01-11 00:19:35,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13115 to 12712. [2022-01-11 00:19:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12712 states, 12711 states have (on average 1.2626858626386595) internal successors, (16050), 12711 states have internal predecessors, (16050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:35,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12712 states to 12712 states and 16050 transitions. [2022-01-11 00:19:35,305 INFO L78 Accepts]: Start accepts. Automaton has 12712 states and 16050 transitions. Word has length 105 [2022-01-11 00:19:35,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:35,305 INFO L470 AbstractCegarLoop]: Abstraction has 12712 states and 16050 transitions. [2022-01-11 00:19:35,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:35,305 INFO L276 IsEmpty]: Start isEmpty. Operand 12712 states and 16050 transitions. [2022-01-11 00:19:35,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-11 00:19:35,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:35,307 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] [2022-01-11 00:19:35,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:19:35,307 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:35,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:35,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1095647074, now seen corresponding path program 1 times [2022-01-11 00:19:35,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:35,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385999686] [2022-01-11 00:19:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:35,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:35,330 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 00:19:35,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:35,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385999686] [2022-01-11 00:19:35,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385999686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:35,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:35,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:35,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983335092] [2022-01-11 00:19:35,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:35,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:35,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:35,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:35,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:35,332 INFO L87 Difference]: Start difference. First operand 12712 states and 16050 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:35,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:35,878 INFO L93 Difference]: Finished difference Result 25161 states and 31784 transitions. [2022-01-11 00:19:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:35,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-11 00:19:35,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:35,900 INFO L225 Difference]: With dead ends: 25161 [2022-01-11 00:19:35,901 INFO L226 Difference]: Without dead ends: 12550 [2022-01-11 00:19:35,915 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 00:19:35,916 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 804 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:35,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 810 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:35,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12550 states. [2022-01-11 00:19:36,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12550 to 12550. [2022-01-11 00:19:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12550 states, 12549 states have (on average 1.2635269742608972) internal successors, (15856), 12549 states have internal predecessors, (15856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:36,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12550 states to 12550 states and 15856 transitions. [2022-01-11 00:19:36,620 INFO L78 Accepts]: Start accepts. Automaton has 12550 states and 15856 transitions. Word has length 105 [2022-01-11 00:19:36,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:36,620 INFO L470 AbstractCegarLoop]: Abstraction has 12550 states and 15856 transitions. [2022-01-11 00:19:36,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:36,621 INFO L276 IsEmpty]: Start isEmpty. Operand 12550 states and 15856 transitions. [2022-01-11 00:19:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 00:19:36,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:36,622 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] [2022-01-11 00:19:36,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:19:36,622 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:36,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:36,623 INFO L85 PathProgramCache]: Analyzing trace with hash 621410543, now seen corresponding path program 1 times [2022-01-11 00:19:36,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:36,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530968173] [2022-01-11 00:19:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:36,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:36,654 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 00:19:36,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:36,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530968173] [2022-01-11 00:19:36,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530968173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:36,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:36,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:36,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936460557] [2022-01-11 00:19:36,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:36,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:36,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:36,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:36,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:36,656 INFO L87 Difference]: Start difference. First operand 12550 states and 15856 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:37,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:37,966 INFO L93 Difference]: Finished difference Result 36204 states and 45676 transitions. [2022-01-11 00:19:37,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:37,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-11 00:19:37,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:38,003 INFO L225 Difference]: With dead ends: 36204 [2022-01-11 00:19:38,003 INFO L226 Difference]: Without dead ends: 23827 [2022-01-11 00:19:38,019 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 00:19:38,020 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 642 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:38,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 1688 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23827 states. [2022-01-11 00:19:39,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23827 to 23248. [2022-01-11 00:19:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23248 states, 23247 states have (on average 1.2595173570783327) internal successors, (29280), 23247 states have internal predecessors, (29280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:39,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23248 states to 23248 states and 29280 transitions. [2022-01-11 00:19:39,136 INFO L78 Accepts]: Start accepts. Automaton has 23248 states and 29280 transitions. Word has length 106 [2022-01-11 00:19:39,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:39,136 INFO L470 AbstractCegarLoop]: Abstraction has 23248 states and 29280 transitions. [2022-01-11 00:19:39,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:39,136 INFO L276 IsEmpty]: Start isEmpty. Operand 23248 states and 29280 transitions. [2022-01-11 00:19:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 00:19:39,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:39,139 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] [2022-01-11 00:19:39,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 00:19:39,139 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:39,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:39,140 INFO L85 PathProgramCache]: Analyzing trace with hash -331791090, now seen corresponding path program 1 times [2022-01-11 00:19:39,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:39,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329661572] [2022-01-11 00:19:39,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:39,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:39,161 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 00:19:39,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:39,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329661572] [2022-01-11 00:19:39,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329661572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:39,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:39,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:39,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221688642] [2022-01-11 00:19:39,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:39,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:39,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:39,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:39,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:39,164 INFO L87 Difference]: Start difference. First operand 23248 states and 29280 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:40,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:40,204 INFO L93 Difference]: Finished difference Result 46221 states and 58232 transitions. [2022-01-11 00:19:40,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:40,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-11 00:19:40,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:40,238 INFO L225 Difference]: With dead ends: 46221 [2022-01-11 00:19:40,238 INFO L226 Difference]: Without dead ends: 23088 [2022-01-11 00:19:40,260 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 00:19:40,261 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 802 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:40,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 809 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:40,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23088 states. [2022-01-11 00:19:41,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23088 to 23088. [2022-01-11 00:19:41,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23088 states, 23087 states have (on average 1.2600164594793606) internal successors, (29090), 23087 states have internal predecessors, (29090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:41,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23088 states to 23088 states and 29090 transitions. [2022-01-11 00:19:41,735 INFO L78 Accepts]: Start accepts. Automaton has 23088 states and 29090 transitions. Word has length 106 [2022-01-11 00:19:41,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:41,735 INFO L470 AbstractCegarLoop]: Abstraction has 23088 states and 29090 transitions. [2022-01-11 00:19:41,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:41,736 INFO L276 IsEmpty]: Start isEmpty. Operand 23088 states and 29090 transitions. [2022-01-11 00:19:41,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 00:19:41,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:41,737 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] [2022-01-11 00:19:41,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 00:19:41,737 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:41,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:41,738 INFO L85 PathProgramCache]: Analyzing trace with hash -756114735, now seen corresponding path program 1 times [2022-01-11 00:19:41,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:41,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602451240] [2022-01-11 00:19:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:41,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:41,769 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 00:19:41,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:41,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602451240] [2022-01-11 00:19:41,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602451240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:41,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:41,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:41,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120284888] [2022-01-11 00:19:41,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:41,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:41,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:41,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:41,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:41,770 INFO L87 Difference]: Start difference. First operand 23088 states and 29090 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:43,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:43,808 INFO L93 Difference]: Finished difference Result 66126 states and 83166 transitions. [2022-01-11 00:19:43,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:43,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-11 00:19:43,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:43,864 INFO L225 Difference]: With dead ends: 66126 [2022-01-11 00:19:43,865 INFO L226 Difference]: Without dead ends: 43211 [2022-01-11 00:19:43,882 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 00:19:43,883 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 688 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:43,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 1611 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43211 states. [2022-01-11 00:19:45,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43211 to 42312. [2022-01-11 00:19:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42312 states, 42311 states have (on average 1.2554182127579117) internal successors, (53118), 42311 states have internal predecessors, (53118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42312 states to 42312 states and 53118 transitions. [2022-01-11 00:19:45,972 INFO L78 Accepts]: Start accepts. Automaton has 42312 states and 53118 transitions. Word has length 107 [2022-01-11 00:19:45,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:45,972 INFO L470 AbstractCegarLoop]: Abstraction has 42312 states and 53118 transitions. [2022-01-11 00:19:45,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:45,973 INFO L276 IsEmpty]: Start isEmpty. Operand 42312 states and 53118 transitions. [2022-01-11 00:19:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 00:19:45,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:45,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:45,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 00:19:45,975 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:45,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:45,975 INFO L85 PathProgramCache]: Analyzing trace with hash 261623089, now seen corresponding path program 1 times [2022-01-11 00:19:45,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:45,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571601706] [2022-01-11 00:19:45,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:45,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:45,997 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 00:19:45,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:45,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571601706] [2022-01-11 00:19:45,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571601706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:45,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:45,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:45,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068638217] [2022-01-11 00:19:45,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:45,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:45,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:45,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:45,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:45,998 INFO L87 Difference]: Start difference. First operand 42312 states and 53118 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:48,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:48,484 INFO L93 Difference]: Finished difference Result 84337 states and 105896 transitions. [2022-01-11 00:19:48,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:48,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-11 00:19:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:48,541 INFO L225 Difference]: With dead ends: 84337 [2022-01-11 00:19:48,541 INFO L226 Difference]: Without dead ends: 42154 [2022-01-11 00:19:48,571 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 00:19:48,572 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 800 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:48,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 808 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:48,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42154 states. [2022-01-11 00:19:50,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42154 to 42154. [2022-01-11 00:19:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42154 states, 42153 states have (on average 1.2557113372713686) internal successors, (52932), 42153 states have internal predecessors, (52932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:50,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42154 states to 42154 states and 52932 transitions. [2022-01-11 00:19:50,727 INFO L78 Accepts]: Start accepts. Automaton has 42154 states and 52932 transitions. Word has length 107 [2022-01-11 00:19:50,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:50,728 INFO L470 AbstractCegarLoop]: Abstraction has 42154 states and 52932 transitions. [2022-01-11 00:19:50,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:50,728 INFO L276 IsEmpty]: Start isEmpty. Operand 42154 states and 52932 transitions. [2022-01-11 00:19:50,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 00:19:50,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:50,729 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] [2022-01-11 00:19:50,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 00:19:50,730 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:50,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:50,730 INFO L85 PathProgramCache]: Analyzing trace with hash -891668766, now seen corresponding path program 1 times [2022-01-11 00:19:50,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:50,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919700406] [2022-01-11 00:19:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:50,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:50,858 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 00:19:50,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:50,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919700406] [2022-01-11 00:19:50,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919700406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:50,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:50,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:50,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292448402] [2022-01-11 00:19:50,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:50,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:50,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:50,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:50,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:50,860 INFO L87 Difference]: Start difference. First operand 42154 states and 52932 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:55,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:55,060 INFO L93 Difference]: Finished difference Result 125127 states and 157152 transitions. [2022-01-11 00:19:55,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:55,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-11 00:19:55,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:55,187 INFO L225 Difference]: With dead ends: 125127 [2022-01-11 00:19:55,187 INFO L226 Difference]: Without dead ends: 83106 [2022-01-11 00:19:55,217 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 00:19:55,218 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 678 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:55,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 1482 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:55,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83106 states. [2022-01-11 00:19:59,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83106 to 82850. [2022-01-11 00:19:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82850 states, 82849 states have (on average 1.2482709507658512) internal successors, (103418), 82849 states have internal predecessors, (103418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:59,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82850 states to 82850 states and 103418 transitions. [2022-01-11 00:19:59,784 INFO L78 Accepts]: Start accepts. Automaton has 82850 states and 103418 transitions. Word has length 108 [2022-01-11 00:19:59,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:59,785 INFO L470 AbstractCegarLoop]: Abstraction has 82850 states and 103418 transitions. [2022-01-11 00:19:59,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 82850 states and 103418 transitions. [2022-01-11 00:19:59,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 00:19:59,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:59,803 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:19:59,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 00:19:59,803 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:59,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:59,803 INFO L85 PathProgramCache]: Analyzing trace with hash 144935144, now seen corresponding path program 1 times [2022-01-11 00:19:59,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:59,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052799833] [2022-01-11 00:19:59,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:59,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:19:59,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:59,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052799833] [2022-01-11 00:19:59,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052799833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:59,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:59,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:59,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632545261] [2022-01-11 00:19:59,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:59,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:59,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:59,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:59,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:59,850 INFO L87 Difference]: Start difference. First operand 82850 states and 103418 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:20:08,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:20:08,523 INFO L93 Difference]: Finished difference Result 247335 states and 308500 transitions. [2022-01-11 00:20:08,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:20:08,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 00:20:08,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:20:08,734 INFO L225 Difference]: With dead ends: 247335 [2022-01-11 00:20:08,734 INFO L226 Difference]: Without dead ends: 124060 [2022-01-11 00:20:08,820 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 00:20:08,821 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 760 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2356 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:20:08,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 2356 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:20:08,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124060 states. [2022-01-11 00:20:15,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124060 to 124060. [2022-01-11 00:20:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124060 states, 124059 states have (on average 1.2482770294779097) internal successors, (154860), 124059 states have internal predecessors, (154860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:20:16,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124060 states to 124060 states and 154860 transitions. [2022-01-11 00:20:16,041 INFO L78 Accepts]: Start accepts. Automaton has 124060 states and 154860 transitions. Word has length 132 [2022-01-11 00:20:16,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:20:16,042 INFO L470 AbstractCegarLoop]: Abstraction has 124060 states and 154860 transitions. [2022-01-11 00:20:16,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:20:16,043 INFO L276 IsEmpty]: Start isEmpty. Operand 124060 states and 154860 transitions. [2022-01-11 00:20:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-11 00:20:16,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:20:16,107 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:20:16,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 00:20:16,107 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:20:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:20:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash 862132781, now seen corresponding path program 1 times [2022-01-11 00:20:16,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:20:16,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201931430] [2022-01-11 00:20:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:20:16,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:20:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:20:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-11 00:20:16,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:20:16,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201931430] [2022-01-11 00:20:16,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201931430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:20:16,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:20:16,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:20:16,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982786773] [2022-01-11 00:20:16,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:20:16,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:20:16,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:20:16,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:20:16,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:20:16,149 INFO L87 Difference]: Start difference. First operand 124060 states and 154860 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:20:24,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:20:24,799 INFO L93 Difference]: Finished difference Result 285555 states and 356242 transitions. [2022-01-11 00:20:24,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:20:24,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-01-11 00:20:24,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:20:25,066 INFO L225 Difference]: With dead ends: 285555 [2022-01-11 00:20:25,066 INFO L226 Difference]: Without dead ends: 161614 [2022-01-11 00:20:25,294 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 00:20:25,295 INFO L933 BasicCegarLoop]: 795 mSDtfsCounter, 594 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:20:25,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 1480 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:20:25,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161614 states. [2022-01-11 00:20:33,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161614 to 161230. [2022-01-11 00:20:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161230 states, 161229 states have (on average 1.2435479969484398) internal successors, (200496), 161229 states have internal predecessors, (200496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:20:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161230 states to 161230 states and 200496 transitions. [2022-01-11 00:20:34,235 INFO L78 Accepts]: Start accepts. Automaton has 161230 states and 200496 transitions. Word has length 181 [2022-01-11 00:20:34,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:20:34,236 INFO L470 AbstractCegarLoop]: Abstraction has 161230 states and 200496 transitions. [2022-01-11 00:20:34,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:20:34,236 INFO L276 IsEmpty]: Start isEmpty. Operand 161230 states and 200496 transitions. [2022-01-11 00:20:34,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-11 00:20:34,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:20:34,303 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:20:34,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 00:20:34,303 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:20:34,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:20:34,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2062935171, now seen corresponding path program 1 times [2022-01-11 00:20:34,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:20:34,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256577086] [2022-01-11 00:20:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:20:34,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:20:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:20:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:20:34,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:20:34,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256577086] [2022-01-11 00:20:34,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256577086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:20:34,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:20:34,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:20:34,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260165375] [2022-01-11 00:20:34,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:20:34,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:20:34,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:20:34,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:20:34,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:20:34,345 INFO L87 Difference]: Start difference. First operand 161230 states and 200496 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)