/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_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:04:08,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:04:08,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:04:08,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:04:08,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:04:08,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:04:08,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:04:08,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:04:08,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:04:08,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:04:08,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:04:08,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:04:08,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:04:08,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:04:08,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:04:08,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:04:08,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:04:08,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:04:08,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:04:08,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:04:08,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:04:08,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:04:08,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:04:08,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:04:08,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:04:08,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:04:08,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:04:08,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:04:08,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:04:08,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:04:08,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:04:08,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:04:08,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:04:08,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:04:08,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:04:08,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:04:08,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:04:08,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:04:08,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:04:08,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:04:08,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:04:08,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:04:08,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:04:08,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:04:08,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:04:08,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:04:08,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:04:08,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:04:08,845 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:04:08,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:04:08,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:04:08,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:04:08,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:04:08,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:04:08,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:04:08,846 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:04:08,846 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:04:08,846 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:04:08,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:04:08,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:04:08,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:04:08,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:04:08,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:04:08,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:04:08,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:04:08,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:04:08,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:04:08,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:04:08,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:04:08,848 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:04:08,848 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:04:08,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:04:08,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:04:08,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:04:08,849 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:04:08,849 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:04:09,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:04:09,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:04:09,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:04:09,047 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:04:09,047 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:04:09,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c [2022-01-10 18:04:09,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14793aa75/432caf8507a84b94b24b77e9b90cc741/FLAG3bbb1b4b4 [2022-01-10 18:04:09,573 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:04:09,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c [2022-01-10 18:04:09,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14793aa75/432caf8507a84b94b24b77e9b90cc741/FLAG3bbb1b4b4 [2022-01-10 18:04:09,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14793aa75/432caf8507a84b94b24b77e9b90cc741 [2022-01-10 18:04:09,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:04:09,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:04:09,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:04:09,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:04:09,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:04:09,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:04:09" (1/1) ... [2022-01-10 18:04:09,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9c2b158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:09, skipping insertion in model container [2022-01-10 18:04:09,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:04:09" (1/1) ... [2022-01-10 18:04:09,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:04:09,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:04:10,018 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c[57688,57701] [2022-01-10 18:04:10,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:04:10,056 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:04:10,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:04:10,159 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c[57688,57701] [2022-01-10 18:04:10,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:04:10,177 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:04:10,232 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c[57688,57701] [2022-01-10 18:04:10,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:04:10,285 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:04:10,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:10 WrapperNode [2022-01-10 18:04:10,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:04:10,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:04:10,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:04:10,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:04:10,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:10" (1/1) ... [2022-01-10 18:04:10,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:10" (1/1) ... [2022-01-10 18:04:10,387 INFO L137 Inliner]: procedures = 135, calls = 229, calls flagged for inlining = 136, calls inlined = 354, statements flattened = 5366 [2022-01-10 18:04:10,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:04:10,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:04:10,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:04:10,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:04:10,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:10" (1/1) ... [2022-01-10 18:04:10,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:10" (1/1) ... [2022-01-10 18:04:10,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:10" (1/1) ... [2022-01-10 18:04:10,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:10" (1/1) ... [2022-01-10 18:04:10,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:10" (1/1) ... [2022-01-10 18:04:10,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:10" (1/1) ... [2022-01-10 18:04:10,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:10" (1/1) ... [2022-01-10 18:04:10,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:04:10,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:04:10,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:04:10,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:04:10,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:10" (1/1) ... [2022-01-10 18:04:10,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:04:10,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:04:10,533 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) [2022-01-10 18:04:10,535 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 [2022-01-10 18:04:10,584 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:04:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:04:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:04:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:04:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:04:10,774 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:04:10,775 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:04:12,395 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:04:12,415 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:04:12,416 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:04:12,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:04:12 BoogieIcfgContainer [2022-01-10 18:04:12,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:04:12,419 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:04:12,419 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:04:12,420 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:04:12,422 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:04:12" (1/1) ... [2022-01-10 18:04:12,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:04:12 BasicIcfg [2022-01-10 18:04:12,889 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:04:12,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:04:12,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:04:12,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:04:12,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:04:09" (1/4) ... [2022-01-10 18:04:12,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15741b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:04:12, skipping insertion in model container [2022-01-10 18:04:12,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:10" (2/4) ... [2022-01-10 18:04:12,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15741b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:04:12, skipping insertion in model container [2022-01-10 18:04:12,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:04:12" (3/4) ... [2022-01-10 18:04:12,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15741b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:04:12, skipping insertion in model container [2022-01-10 18:04:12,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:04:12" (4/4) ... [2022-01-10 18:04:12,894 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product27.cil.cTransformedIcfg [2022-01-10 18:04:12,898 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:04:12,898 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 18:04:12,942 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:04:12,948 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 [2022-01-10 18:04:12,948 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 18:04:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 1133 states, 1126 states have (on average 1.6767317939609236) internal successors, (1888), 1132 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:12,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 18:04:12,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:13,000 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] [2022-01-10 18:04:13,000 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:13,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:13,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1067416730, now seen corresponding path program 1 times [2022-01-10 18:04:13,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:13,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507698593] [2022-01-10 18:04:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:13,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:13,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:13,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507698593] [2022-01-10 18:04:13,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507698593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:13,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:13,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:04:13,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620904356] [2022-01-10 18:04:13,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:13,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:04:13,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:13,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:04:13,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:04:13,403 INFO L87 Difference]: Start difference. First operand has 1133 states, 1126 states have (on average 1.6767317939609236) internal successors, (1888), 1132 states have internal predecessors, (1888), 0 states have call successors, (0), 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 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:13,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:13,510 INFO L93 Difference]: Finished difference Result 1952 states and 3221 transitions. [2022-01-10 18:04:13,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:04:13,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-01-10 18:04:13,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:13,529 INFO L225 Difference]: With dead ends: 1952 [2022-01-10 18:04:13,529 INFO L226 Difference]: Without dead ends: 1013 [2022-01-10 18:04:13,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:04:13,539 INFO L933 BasicCegarLoop]: 1874 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:13,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:13,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-01-10 18:04:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1013. [2022-01-10 18:04:13,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1007 states have (on average 1.6911618669314796) internal successors, (1703), 1012 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1703 transitions. [2022-01-10 18:04:13,623 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1703 transitions. Word has length 58 [2022-01-10 18:04:13,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:13,624 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1703 transitions. [2022-01-10 18:04:13,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:13,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1703 transitions. [2022-01-10 18:04:13,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 18:04:13,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:13,628 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] [2022-01-10 18:04:13,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:04:13,628 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:13,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:13,630 INFO L85 PathProgramCache]: Analyzing trace with hash -10033504, now seen corresponding path program 1 times [2022-01-10 18:04:13,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:13,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520538638] [2022-01-10 18:04:13,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:13,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:13,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:13,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520538638] [2022-01-10 18:04:13,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520538638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:13,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:13,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:04:13,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137319100] [2022-01-10 18:04:13,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:13,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:04:13,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:13,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:04:13,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:04:13,808 INFO L87 Difference]: Start difference. First operand 1013 states and 1703 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:13,885 INFO L93 Difference]: Finished difference Result 2007 states and 3378 transitions. [2022-01-10 18:04:13,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:04:13,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-10 18:04:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:13,889 INFO L225 Difference]: With dead ends: 2007 [2022-01-10 18:04:13,889 INFO L226 Difference]: Without dead ends: 1013 [2022-01-10 18:04:13,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:04:13,891 INFO L933 BasicCegarLoop]: 1681 mSDtfsCounter, 1678 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1678 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:13,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1678 Valid, 1694 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:13,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-01-10 18:04:13,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1013. [2022-01-10 18:04:13,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1007 states have (on average 1.689175769612711) internal successors, (1701), 1012 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:13,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1701 transitions. [2022-01-10 18:04:13,919 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1701 transitions. Word has length 59 [2022-01-10 18:04:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:13,920 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1701 transitions. [2022-01-10 18:04:13,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:13,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1701 transitions. [2022-01-10 18:04:13,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:04:13,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:13,927 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] [2022-01-10 18:04:13,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:04:13,927 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:13,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:13,928 INFO L85 PathProgramCache]: Analyzing trace with hash 538004640, now seen corresponding path program 1 times [2022-01-10 18:04:13,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:13,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886524072] [2022-01-10 18:04:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:13,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:14,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:14,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886524072] [2022-01-10 18:04:14,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886524072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:14,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:14,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:14,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445777377] [2022-01-10 18:04:14,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:14,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:14,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:14,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:14,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:14,084 INFO L87 Difference]: Start difference. First operand 1013 states and 1701 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:14,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:14,484 INFO L93 Difference]: Finished difference Result 4933 states and 8301 transitions. [2022-01-10 18:04:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:04:14,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-10 18:04:14,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:14,502 INFO L225 Difference]: With dead ends: 4933 [2022-01-10 18:04:14,502 INFO L226 Difference]: Without dead ends: 3944 [2022-01-10 18:04:14,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:04:14,507 INFO L933 BasicCegarLoop]: 3325 mSDtfsCounter, 8288 mSDsluCounter, 4975 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8288 SdHoareTripleChecker+Valid, 8300 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:14,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8288 Valid, 8300 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:04:14,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2022-01-10 18:04:14,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 1013. [2022-01-10 18:04:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1007 states have (on average 1.6881827209533267) internal successors, (1700), 1012 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1700 transitions. [2022-01-10 18:04:14,591 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1700 transitions. Word has length 61 [2022-01-10 18:04:14,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:14,591 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1700 transitions. [2022-01-10 18:04:14,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:14,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1700 transitions. [2022-01-10 18:04:14,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:04:14,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:14,593 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] [2022-01-10 18:04:14,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:04:14,593 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:14,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:14,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1762800972, now seen corresponding path program 1 times [2022-01-10 18:04:14,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:14,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885988822] [2022-01-10 18:04:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:14,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:14,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:14,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885988822] [2022-01-10 18:04:14,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885988822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:14,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:14,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:04:14,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110854418] [2022-01-10 18:04:14,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:14,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:04:14,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:14,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:04:14,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:04:14,690 INFO L87 Difference]: Start difference. First operand 1013 states and 1700 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:14,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:14,810 INFO L93 Difference]: Finished difference Result 2011 states and 3378 transitions. [2022-01-10 18:04:14,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:04:14,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-01-10 18:04:14,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:14,828 INFO L225 Difference]: With dead ends: 2011 [2022-01-10 18:04:14,828 INFO L226 Difference]: Without dead ends: 1027 [2022-01-10 18:04:14,830 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 [2022-01-10 18:04:14,831 INFO L933 BasicCegarLoop]: 1714 mSDtfsCounter, 1679 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:14,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1679 Valid, 1736 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:14,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-01-10 18:04:14,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1013. [2022-01-10 18:04:14,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1007 states have (on average 1.6871896722939423) internal successors, (1699), 1012 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:14,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1699 transitions. [2022-01-10 18:04:14,913 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1699 transitions. Word has length 62 [2022-01-10 18:04:14,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:14,914 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1699 transitions. [2022-01-10 18:04:14,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:14,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1699 transitions. [2022-01-10 18:04:14,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:04:14,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:14,915 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] [2022-01-10 18:04:14,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:04:14,915 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:14,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:14,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2047792767, now seen corresponding path program 1 times [2022-01-10 18:04:14,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:14,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732697458] [2022-01-10 18:04:14,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:14,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:14,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:14,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732697458] [2022-01-10 18:04:14,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732697458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:14,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:14,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:14,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66339190] [2022-01-10 18:04:14,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:14,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:14,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:14,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:14,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:14,989 INFO L87 Difference]: Start difference. First operand 1013 states and 1699 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:15,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:15,190 INFO L93 Difference]: Finished difference Result 2973 states and 4997 transitions. [2022-01-10 18:04:15,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:04:15,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 18:04:15,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:15,197 INFO L225 Difference]: With dead ends: 2973 [2022-01-10 18:04:15,197 INFO L226 Difference]: Without dead ends: 1994 [2022-01-10 18:04:15,200 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 [2022-01-10 18:04:15,203 INFO L933 BasicCegarLoop]: 1708 mSDtfsCounter, 8211 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8211 SdHoareTripleChecker+Valid, 3430 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:15,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8211 Valid, 3430 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:15,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2022-01-10 18:04:15,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1013. [2022-01-10 18:04:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1007 states have (on average 1.6852035749751737) internal successors, (1697), 1012 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:15,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1697 transitions. [2022-01-10 18:04:15,263 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1697 transitions. Word has length 63 [2022-01-10 18:04:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:15,264 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1697 transitions. [2022-01-10 18:04:15,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:15,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1697 transitions. [2022-01-10 18:04:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:04:15,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:15,265 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] [2022-01-10 18:04:15,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:04:15,265 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:15,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:15,266 INFO L85 PathProgramCache]: Analyzing trace with hash -137373666, now seen corresponding path program 1 times [2022-01-10 18:04:15,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:15,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339369333] [2022-01-10 18:04:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:15,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:15,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:15,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339369333] [2022-01-10 18:04:15,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339369333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:15,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:15,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:04:15,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151986293] [2022-01-10 18:04:15,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:15,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:04:15,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:15,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:04:15,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:04:15,382 INFO L87 Difference]: Start difference. First operand 1013 states and 1697 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:15,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:15,881 INFO L93 Difference]: Finished difference Result 5998 states and 10010 transitions. [2022-01-10 18:04:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:04:15,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 18:04:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:15,900 INFO L225 Difference]: With dead ends: 5998 [2022-01-10 18:04:15,900 INFO L226 Difference]: Without dead ends: 5312 [2022-01-10 18:04:15,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 18:04:15,904 INFO L933 BasicCegarLoop]: 3256 mSDtfsCounter, 10697 mSDsluCounter, 10347 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10697 SdHoareTripleChecker+Valid, 13603 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:15,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10697 Valid, 13603 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:15,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5312 states. [2022-01-10 18:04:16,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5312 to 1719. [2022-01-10 18:04:16,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1713 states have (on average 1.6865148861646235) internal successors, (2889), 1718 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:16,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2889 transitions. [2022-01-10 18:04:16,055 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2889 transitions. Word has length 65 [2022-01-10 18:04:16,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:16,055 INFO L470 AbstractCegarLoop]: Abstraction has 1719 states and 2889 transitions. [2022-01-10 18:04:16,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2889 transitions. [2022-01-10 18:04:16,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:04:16,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:16,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:16,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:04:16,057 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:16,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:16,058 INFO L85 PathProgramCache]: Analyzing trace with hash 501686971, now seen corresponding path program 1 times [2022-01-10 18:04:16,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:16,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724051173] [2022-01-10 18:04:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:16,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:16,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:16,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724051173] [2022-01-10 18:04:16,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724051173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:16,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:16,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:16,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128629975] [2022-01-10 18:04:16,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:16,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:16,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:16,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:16,144 INFO L87 Difference]: Start difference. First operand 1719 states and 2889 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:16,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:16,340 INFO L93 Difference]: Finished difference Result 3101 states and 5162 transitions. [2022-01-10 18:04:16,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:04:16,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 18:04:16,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:16,347 INFO L225 Difference]: With dead ends: 3101 [2022-01-10 18:04:16,347 INFO L226 Difference]: Without dead ends: 2008 [2022-01-10 18:04:16,349 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 [2022-01-10 18:04:16,351 INFO L933 BasicCegarLoop]: 1679 mSDtfsCounter, 4915 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4915 SdHoareTripleChecker+Valid, 3231 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:16,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4915 Valid, 3231 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:16,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2022-01-10 18:04:16,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1719. [2022-01-10 18:04:16,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1713 states have (on average 1.684179801517805) internal successors, (2885), 1718 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:16,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2885 transitions. [2022-01-10 18:04:16,461 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2885 transitions. Word has length 66 [2022-01-10 18:04:16,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:16,461 INFO L470 AbstractCegarLoop]: Abstraction has 1719 states and 2885 transitions. [2022-01-10 18:04:16,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:16,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2885 transitions. [2022-01-10 18:04:16,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:04:16,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:16,463 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] [2022-01-10 18:04:16,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:04:16,463 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:16,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1433560070, now seen corresponding path program 1 times [2022-01-10 18:04:16,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:16,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850117645] [2022-01-10 18:04:16,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:16,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:16,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:16,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850117645] [2022-01-10 18:04:16,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850117645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:16,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:16,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:16,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432358604] [2022-01-10 18:04:16,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:16,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:16,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:16,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:16,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:16,544 INFO L87 Difference]: Start difference. First operand 1719 states and 2885 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:16,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:16,775 INFO L93 Difference]: Finished difference Result 5034 states and 8484 transitions. [2022-01-10 18:04:16,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:04:16,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 18:04:16,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:16,787 INFO L225 Difference]: With dead ends: 5034 [2022-01-10 18:04:16,787 INFO L226 Difference]: Without dead ends: 3352 [2022-01-10 18:04:16,790 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 [2022-01-10 18:04:16,790 INFO L933 BasicCegarLoop]: 3293 mSDtfsCounter, 5022 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5022 SdHoareTripleChecker+Valid, 4941 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:16,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5022 Valid, 4941 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:16,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2022-01-10 18:04:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 1719. [2022-01-10 18:04:16,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1713 states have (on average 1.683012259194396) internal successors, (2883), 1718 states have internal predecessors, (2883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2883 transitions. [2022-01-10 18:04:16,905 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2883 transitions. Word has length 66 [2022-01-10 18:04:16,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:16,905 INFO L470 AbstractCegarLoop]: Abstraction has 1719 states and 2883 transitions. [2022-01-10 18:04:16,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:16,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2883 transitions. [2022-01-10 18:04:16,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:04:16,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:16,910 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] [2022-01-10 18:04:16,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:04:16,910 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:16,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:16,910 INFO L85 PathProgramCache]: Analyzing trace with hash -541873622, now seen corresponding path program 1 times [2022-01-10 18:04:16,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:16,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745237281] [2022-01-10 18:04:16,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:16,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:17,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:17,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745237281] [2022-01-10 18:04:17,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745237281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:17,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:17,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:04:17,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381962757] [2022-01-10 18:04:17,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:17,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:04:17,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:17,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:04:17,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:04:17,013 INFO L87 Difference]: Start difference. First operand 1719 states and 2883 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:17,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:17,153 INFO L93 Difference]: Finished difference Result 2580 states and 4272 transitions. [2022-01-10 18:04:17,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:04:17,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-10 18:04:17,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:17,159 INFO L225 Difference]: With dead ends: 2580 [2022-01-10 18:04:17,159 INFO L226 Difference]: Without dead ends: 1719 [2022-01-10 18:04:17,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:17,163 INFO L933 BasicCegarLoop]: 1671 mSDtfsCounter, 2062 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:17,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2062 Valid, 2961 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:17,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2022-01-10 18:04:17,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1719. [2022-01-10 18:04:17,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1713 states have (on average 1.6777583187390543) internal successors, (2874), 1718 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:17,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2874 transitions. [2022-01-10 18:04:17,261 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2874 transitions. Word has length 67 [2022-01-10 18:04:17,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:17,262 INFO L470 AbstractCegarLoop]: Abstraction has 1719 states and 2874 transitions. [2022-01-10 18:04:17,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:17,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2874 transitions. [2022-01-10 18:04:17,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:04:17,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:17,264 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] [2022-01-10 18:04:17,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:04:17,264 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:17,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:17,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1996210556, now seen corresponding path program 1 times [2022-01-10 18:04:17,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:17,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406713481] [2022-01-10 18:04:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:17,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:17,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:17,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406713481] [2022-01-10 18:04:17,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406713481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:17,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:17,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 18:04:17,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951305362] [2022-01-10 18:04:17,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:17,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:04:17,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:17,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:04:17,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:04:17,409 INFO L87 Difference]: Start difference. First operand 1719 states and 2874 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:19,652 INFO L93 Difference]: Finished difference Result 11054 states and 17554 transitions. [2022-01-10 18:04:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-10 18:04:19,653 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 18:04:19,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:19,694 INFO L225 Difference]: With dead ends: 11054 [2022-01-10 18:04:19,695 INFO L226 Difference]: Without dead ends: 10253 [2022-01-10 18:04:19,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=537, Invalid=1533, Unknown=0, NotChecked=0, Total=2070 [2022-01-10 18:04:19,698 INFO L933 BasicCegarLoop]: 4179 mSDtfsCounter, 16765 mSDsluCounter, 23323 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16765 SdHoareTripleChecker+Valid, 27502 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:19,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16765 Valid, 27502 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 18:04:19,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10253 states. [2022-01-10 18:04:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10253 to 3077. [2022-01-10 18:04:19,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 3071 states have (on average 1.660045587756431) internal successors, (5098), 3076 states have internal predecessors, (5098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 5098 transitions. [2022-01-10 18:04:19,949 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 5098 transitions. Word has length 70 [2022-01-10 18:04:19,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:19,950 INFO L470 AbstractCegarLoop]: Abstraction has 3077 states and 5098 transitions. [2022-01-10 18:04:19,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:19,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 5098 transitions. [2022-01-10 18:04:19,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:04:19,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:19,953 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] [2022-01-10 18:04:19,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:04:19,953 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:19,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:19,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1722434836, now seen corresponding path program 1 times [2022-01-10 18:04:19,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:19,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661469276] [2022-01-10 18:04:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:19,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:20,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:20,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661469276] [2022-01-10 18:04:20,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661469276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:20,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:20,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:04:20,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725947314] [2022-01-10 18:04:20,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:20,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:20,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:20,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:20,075 INFO L87 Difference]: Start difference. First operand 3077 states and 5098 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:21,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:21,557 INFO L93 Difference]: Finished difference Result 14285 states and 22954 transitions. [2022-01-10 18:04:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:04:21,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 18:04:21,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:21,587 INFO L225 Difference]: With dead ends: 14285 [2022-01-10 18:04:21,588 INFO L226 Difference]: Without dead ends: 12482 [2022-01-10 18:04:21,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:04:21,594 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 7571 mSDsluCounter, 5358 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7571 SdHoareTripleChecker+Valid, 7027 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:21,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7571 Valid, 7027 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12482 states. [2022-01-10 18:04:22,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12482 to 4932. [2022-01-10 18:04:22,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4932 states, 4926 states have (on average 1.634997969955339) internal successors, (8054), 4931 states have internal predecessors, (8054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:22,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 8054 transitions. [2022-01-10 18:04:22,165 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 8054 transitions. Word has length 71 [2022-01-10 18:04:22,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:22,165 INFO L470 AbstractCegarLoop]: Abstraction has 4932 states and 8054 transitions. [2022-01-10 18:04:22,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:22,166 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 8054 transitions. [2022-01-10 18:04:22,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:04:22,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:22,168 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] [2022-01-10 18:04:22,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:04:22,168 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:22,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:22,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1625543974, now seen corresponding path program 1 times [2022-01-10 18:04:22,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:22,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567818569] [2022-01-10 18:04:22,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:22,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:22,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:22,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567818569] [2022-01-10 18:04:22,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567818569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:22,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:22,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 18:04:22,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155733379] [2022-01-10 18:04:22,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:22,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:04:22,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:22,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:04:22,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:04:22,325 INFO L87 Difference]: Start difference. First operand 4932 states and 8054 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:23,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:23,408 INFO L93 Difference]: Finished difference Result 10220 states and 16494 transitions. [2022-01-10 18:04:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 18:04:23,409 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 18:04:23,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:23,421 INFO L225 Difference]: With dead ends: 10220 [2022-01-10 18:04:23,421 INFO L226 Difference]: Without dead ends: 6634 [2022-01-10 18:04:23,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2022-01-10 18:04:23,426 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 8301 mSDsluCounter, 7923 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8301 SdHoareTripleChecker+Valid, 9657 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:23,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8301 Valid, 9657 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:23,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2022-01-10 18:04:23,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 4668. [2022-01-10 18:04:23,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4668 states, 4662 states have (on average 1.6233376233376233) internal successors, (7568), 4667 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4668 states to 4668 states and 7568 transitions. [2022-01-10 18:04:23,908 INFO L78 Accepts]: Start accepts. Automaton has 4668 states and 7568 transitions. Word has length 72 [2022-01-10 18:04:23,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:23,908 INFO L470 AbstractCegarLoop]: Abstraction has 4668 states and 7568 transitions. [2022-01-10 18:04:23,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:23,908 INFO L276 IsEmpty]: Start isEmpty. Operand 4668 states and 7568 transitions. [2022-01-10 18:04:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:04:23,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:23,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:23,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:04:23,912 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:23,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash 393071510, now seen corresponding path program 1 times [2022-01-10 18:04:23,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:23,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615307124] [2022-01-10 18:04:23,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:23,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:24,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:24,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615307124] [2022-01-10 18:04:24,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615307124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:24,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:24,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:04:24,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752339186] [2022-01-10 18:04:24,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:24,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:04:24,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:24,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:04:24,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:04:24,024 INFO L87 Difference]: Start difference. First operand 4668 states and 7568 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:27,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:27,218 INFO L93 Difference]: Finished difference Result 19731 states and 30787 transitions. [2022-01-10 18:04:27,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-10 18:04:27,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 18:04:27,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:27,246 INFO L225 Difference]: With dead ends: 19731 [2022-01-10 18:04:27,246 INFO L226 Difference]: Without dead ends: 16485 [2022-01-10 18:04:27,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=336, Invalid=854, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 18:04:27,254 INFO L933 BasicCegarLoop]: 3869 mSDtfsCounter, 13629 mSDsluCounter, 18233 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13629 SdHoareTripleChecker+Valid, 22102 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:27,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13629 Valid, 22102 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 18:04:27,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16485 states. [2022-01-10 18:04:27,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16485 to 4640. [2022-01-10 18:04:27,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4640 states, 4634 states have (on average 1.6180405697022011) internal successors, (7498), 4639 states have internal predecessors, (7498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:27,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4640 states to 4640 states and 7498 transitions. [2022-01-10 18:04:27,914 INFO L78 Accepts]: Start accepts. Automaton has 4640 states and 7498 transitions. Word has length 85 [2022-01-10 18:04:27,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:27,914 INFO L470 AbstractCegarLoop]: Abstraction has 4640 states and 7498 transitions. [2022-01-10 18:04:27,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:27,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4640 states and 7498 transitions. [2022-01-10 18:04:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:04:27,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:27,919 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] [2022-01-10 18:04:27,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:04:27,920 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:27,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:27,920 INFO L85 PathProgramCache]: Analyzing trace with hash 147028445, now seen corresponding path program 1 times [2022-01-10 18:04:27,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:27,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348201718] [2022-01-10 18:04:27,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:27,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:28,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:28,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348201718] [2022-01-10 18:04:28,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348201718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:28,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:28,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:04:28,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936093035] [2022-01-10 18:04:28,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:28,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:04:28,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:28,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:04:28,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:04:28,026 INFO L87 Difference]: Start difference. First operand 4640 states and 7498 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:29,052 INFO L93 Difference]: Finished difference Result 9990 states and 15935 transitions. [2022-01-10 18:04:29,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 18:04:29,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 18:04:29,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:29,062 INFO L225 Difference]: With dead ends: 9990 [2022-01-10 18:04:29,063 INFO L226 Difference]: Without dead ends: 6166 [2022-01-10 18:04:29,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-01-10 18:04:29,068 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 6833 mSDsluCounter, 5336 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6833 SdHoareTripleChecker+Valid, 6995 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:29,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6833 Valid, 6995 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:29,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6166 states. [2022-01-10 18:04:29,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6166 to 4640. [2022-01-10 18:04:29,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4640 states, 4634 states have (on average 1.6137246439361244) internal successors, (7478), 4639 states have internal predecessors, (7478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4640 states to 4640 states and 7478 transitions. [2022-01-10 18:04:29,585 INFO L78 Accepts]: Start accepts. Automaton has 4640 states and 7478 transitions. Word has length 85 [2022-01-10 18:04:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:29,586 INFO L470 AbstractCegarLoop]: Abstraction has 4640 states and 7478 transitions. [2022-01-10 18:04:29,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 4640 states and 7478 transitions. [2022-01-10 18:04:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:04:29,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:29,589 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] [2022-01-10 18:04:29,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:04:29,589 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:29,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:29,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1863075396, now seen corresponding path program 1 times [2022-01-10 18:04:29,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:29,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519055256] [2022-01-10 18:04:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:29,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:29,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:29,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519055256] [2022-01-10 18:04:29,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519055256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:29,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:29,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:04:29,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646096282] [2022-01-10 18:04:29,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:29,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:29,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:29,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:29,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:29,666 INFO L87 Difference]: Start difference. First operand 4640 states and 7478 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:32,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:32,347 INFO L93 Difference]: Finished difference Result 22164 states and 34690 transitions. [2022-01-10 18:04:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:04:32,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 18:04:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:32,371 INFO L225 Difference]: With dead ends: 22164 [2022-01-10 18:04:32,371 INFO L226 Difference]: Without dead ends: 18454 [2022-01-10 18:04:32,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:04:32,380 INFO L933 BasicCegarLoop]: 1694 mSDtfsCounter, 6715 mSDsluCounter, 5314 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6715 SdHoareTripleChecker+Valid, 7008 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:32,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6715 Valid, 7008 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:04:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18454 states. [2022-01-10 18:04:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18454 to 8446. [2022-01-10 18:04:33,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8446 states, 8440 states have (on average 1.5950236966824645) internal successors, (13462), 8445 states have internal predecessors, (13462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8446 states to 8446 states and 13462 transitions. [2022-01-10 18:04:33,558 INFO L78 Accepts]: Start accepts. Automaton has 8446 states and 13462 transitions. Word has length 85 [2022-01-10 18:04:33,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:33,559 INFO L470 AbstractCegarLoop]: Abstraction has 8446 states and 13462 transitions. [2022-01-10 18:04:33,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:33,559 INFO L276 IsEmpty]: Start isEmpty. Operand 8446 states and 13462 transitions. [2022-01-10 18:04:33,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 18:04:33,564 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:33,564 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] [2022-01-10 18:04:33,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:04:33,564 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:33,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:33,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1121995867, now seen corresponding path program 1 times [2022-01-10 18:04:33,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:33,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243218962] [2022-01-10 18:04:33,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:33,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:33,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:33,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243218962] [2022-01-10 18:04:33,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243218962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:33,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:33,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:04:33,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896022740] [2022-01-10 18:04:33,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:33,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:33,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:33,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:33,649 INFO L87 Difference]: Start difference. First operand 8446 states and 13462 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:37,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:37,348 INFO L93 Difference]: Finished difference Result 30950 states and 48413 transitions. [2022-01-10 18:04:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:04:37,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-10 18:04:37,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:37,385 INFO L225 Difference]: With dead ends: 30950 [2022-01-10 18:04:37,386 INFO L226 Difference]: Without dead ends: 23742 [2022-01-10 18:04:37,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:04:37,399 INFO L933 BasicCegarLoop]: 2316 mSDtfsCounter, 5451 mSDsluCounter, 5330 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5451 SdHoareTripleChecker+Valid, 7646 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:37,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5451 Valid, 7646 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:04:37,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23742 states. [2022-01-10 18:04:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23742 to 10740. [2022-01-10 18:04:39,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10740 states, 10734 states have (on average 1.5905533817775293) internal successors, (17073), 10739 states have internal predecessors, (17073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:39,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10740 states to 10740 states and 17073 transitions. [2022-01-10 18:04:39,033 INFO L78 Accepts]: Start accepts. Automaton has 10740 states and 17073 transitions. Word has length 86 [2022-01-10 18:04:39,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:39,033 INFO L470 AbstractCegarLoop]: Abstraction has 10740 states and 17073 transitions. [2022-01-10 18:04:39,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:39,034 INFO L276 IsEmpty]: Start isEmpty. Operand 10740 states and 17073 transitions. [2022-01-10 18:04:39,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 18:04:39,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:39,040 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] [2022-01-10 18:04:39,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:04:39,040 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:39,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:39,041 INFO L85 PathProgramCache]: Analyzing trace with hash -892179592, now seen corresponding path program 1 times [2022-01-10 18:04:39,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:39,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003933220] [2022-01-10 18:04:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:39,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:39,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:39,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003933220] [2022-01-10 18:04:39,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003933220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:39,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:39,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:39,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5032730] [2022-01-10 18:04:39,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:39,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:39,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:39,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:39,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:39,117 INFO L87 Difference]: Start difference. First operand 10740 states and 17073 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:45,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:45,915 INFO L93 Difference]: Finished difference Result 45659 states and 70910 transitions. [2022-01-10 18:04:45,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:04:45,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 18:04:45,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:45,984 INFO L225 Difference]: With dead ends: 45659 [2022-01-10 18:04:45,984 INFO L226 Difference]: Without dead ends: 37963 [2022-01-10 18:04:46,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:04:46,000 INFO L933 BasicCegarLoop]: 3708 mSDtfsCounter, 3398 mSDsluCounter, 7645 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3398 SdHoareTripleChecker+Valid, 11353 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:46,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3398 Valid, 11353 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:04:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37963 states. [2022-01-10 18:04:47,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37963 to 11112. [2022-01-10 18:04:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11112 states, 11106 states have (on average 1.5718530524041059) internal successors, (17457), 11111 states have internal predecessors, (17457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:47,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11112 states to 11112 states and 17457 transitions. [2022-01-10 18:04:47,730 INFO L78 Accepts]: Start accepts. Automaton has 11112 states and 17457 transitions. Word has length 87 [2022-01-10 18:04:47,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:47,730 INFO L470 AbstractCegarLoop]: Abstraction has 11112 states and 17457 transitions. [2022-01-10 18:04:47,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 11112 states and 17457 transitions. [2022-01-10 18:04:47,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 18:04:47,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:47,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:47,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:04:47,737 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:47,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:47,737 INFO L85 PathProgramCache]: Analyzing trace with hash 266207763, now seen corresponding path program 1 times [2022-01-10 18:04:47,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:47,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399655937] [2022-01-10 18:04:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:47,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:47,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:47,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:47,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399655937] [2022-01-10 18:04:47,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399655937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:47,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:47,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:04:47,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674712782] [2022-01-10 18:04:47,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:47,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:04:47,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:47,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:04:47,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:04:47,794 INFO L87 Difference]: Start difference. First operand 11112 states and 17457 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:50,188 INFO L93 Difference]: Finished difference Result 20924 states and 32655 transitions. [2022-01-10 18:04:50,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:04:50,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 18:04:50,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:50,210 INFO L225 Difference]: With dead ends: 20924 [2022-01-10 18:04:50,210 INFO L226 Difference]: Without dead ends: 15860 [2022-01-10 18:04:50,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:50,219 INFO L933 BasicCegarLoop]: 1672 mSDtfsCounter, 3112 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3112 SdHoareTripleChecker+Valid, 3646 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:50,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3112 Valid, 3646 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:50,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15860 states. [2022-01-10 18:04:51,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15860 to 11112. [2022-01-10 18:04:51,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11112 states, 11106 states have (on average 1.5716729695660003) internal successors, (17455), 11111 states have internal predecessors, (17455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11112 states to 11112 states and 17455 transitions. [2022-01-10 18:04:51,819 INFO L78 Accepts]: Start accepts. Automaton has 11112 states and 17455 transitions. Word has length 87 [2022-01-10 18:04:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:51,819 INFO L470 AbstractCegarLoop]: Abstraction has 11112 states and 17455 transitions. [2022-01-10 18:04:51,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 11112 states and 17455 transitions. [2022-01-10 18:04:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 18:04:51,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:51,826 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] [2022-01-10 18:04:51,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:04:51,826 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:04:51,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:51,827 INFO L85 PathProgramCache]: Analyzing trace with hash 25667634, now seen corresponding path program 1 times [2022-01-10 18:04:51,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:51,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412999451] [2022-01-10 18:04:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:51,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:51,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:51,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:51,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412999451] [2022-01-10 18:04:51,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412999451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:51,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:51,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:51,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805233384] [2022-01-10 18:04:51,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:51,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:04:51,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:51,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:04:51,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:04:51,909 INFO L87 Difference]: Start difference. First operand 11112 states and 17455 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:01,751 INFO L93 Difference]: Finished difference Result 53781 states and 82927 transitions. [2022-01-10 18:05:01,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:05:01,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 18:05:01,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:01,838 INFO L225 Difference]: With dead ends: 53781 [2022-01-10 18:05:01,838 INFO L226 Difference]: Without dead ends: 49887 [2022-01-10 18:05:01,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-01-10 18:05:01,855 INFO L933 BasicCegarLoop]: 5266 mSDtfsCounter, 5558 mSDsluCounter, 13468 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5558 SdHoareTripleChecker+Valid, 18734 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:01,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5558 Valid, 18734 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 18:05:01,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49887 states. [2022-01-10 18:05:04,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49887 to 14676. [2022-01-10 18:05:04,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14676 states, 14670 states have (on average 1.565098841172461) internal successors, (22960), 14675 states have internal predecessors, (22960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14676 states to 14676 states and 22960 transitions. [2022-01-10 18:05:04,508 INFO L78 Accepts]: Start accepts. Automaton has 14676 states and 22960 transitions. Word has length 87 [2022-01-10 18:05:04,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:04,508 INFO L470 AbstractCegarLoop]: Abstraction has 14676 states and 22960 transitions. [2022-01-10 18:05:04,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:04,508 INFO L276 IsEmpty]: Start isEmpty. Operand 14676 states and 22960 transitions. [2022-01-10 18:05:04,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 18:05:04,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:04,515 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] [2022-01-10 18:05:04,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:05:04,515 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:05:04,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1971157077, now seen corresponding path program 1 times [2022-01-10 18:05:04,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:04,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175689126] [2022-01-10 18:05:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:04,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:04,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:04,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175689126] [2022-01-10 18:05:04,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175689126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:04,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:04,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:05:04,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480348093] [2022-01-10 18:05:04,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:04,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:05:04,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:04,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:05:04,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:05:04,630 INFO L87 Difference]: Start difference. First operand 14676 states and 22960 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)