/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/elevator_spec1_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:54:10,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:54:10,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:54:10,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:54:10,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:54:10,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:54:10,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:54:10,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:54:10,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:54:10,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:54:10,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:54:10,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:54:10,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:54:10,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:54:10,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:54:10,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:54:10,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:54:10,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:54:10,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:54:10,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:54:10,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:54:10,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:54:10,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:54:10,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:54:10,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:54:10,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:54:10,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:54:10,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:54:10,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:54:10,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:54:10,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:54:10,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:54:10,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:54:10,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:54:10,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:54:10,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:54:10,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:54:10,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:54:10,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:54:10,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:54:10,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:54:10,523 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 17:54:10,542 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:54:10,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:54:10,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:54:10,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:54:10,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:54:10,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:54:10,544 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:54:10,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:54:10,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:54:10,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:54:10,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:54:10,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:54:10,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:54:10,557 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:54:10,557 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:54:10,557 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:54:10,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:54:10,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:54:10,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:54:10,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:54:10,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:54:10,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:54:10,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:54:10,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:54:10,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:54:10,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:54:10,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:54:10,558 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:54:10,559 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:54:10,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:54:10,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:54:10,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:54:10,560 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:54:10,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:54:10,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:54:10,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:54:10,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:54:10,817 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:54:10,818 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:54:10,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product09.cil.c [2022-01-10 17:54:10,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c10565e/121898fa026a48668acbde386135b3ca/FLAGf617a4c8c [2022-01-10 17:54:11,425 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:54:11,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product09.cil.c [2022-01-10 17:54:11,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c10565e/121898fa026a48668acbde386135b3ca/FLAGf617a4c8c [2022-01-10 17:54:11,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c10565e/121898fa026a48668acbde386135b3ca [2022-01-10 17:54:11,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:54:11,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:54:11,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:54:11,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:54:11,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:54:11,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:54:11" (1/1) ... [2022-01-10 17:54:11,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45f0525d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:11, skipping insertion in model container [2022-01-10 17:54:11,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:54:11" (1/1) ... [2022-01-10 17:54:11,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:54:11,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:54:12,096 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/elevator_spec1_product09.cil.c[1545,1558] [2022-01-10 17:54:12,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:54:12,432 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:54:12,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:54:12,452 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/elevator_spec1_product09.cil.c[1545,1558] [2022-01-10 17:54:12,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:54:12,579 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:54:12,595 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/elevator_spec1_product09.cil.c[1545,1558] [2022-01-10 17:54:12,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:54:12,683 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:54:12,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:12 WrapperNode [2022-01-10 17:54:12,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:54:12,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:54:12,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:54:12,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:54:12,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:12" (1/1) ... [2022-01-10 17:54:12,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:12" (1/1) ... [2022-01-10 17:54:12,842 INFO L137 Inliner]: procedures = 91, calls = 331, calls flagged for inlining = 184, calls inlined = 246, statements flattened = 8044 [2022-01-10 17:54:12,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:54:12,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:54:12,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:54:12,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:54:12,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:12" (1/1) ... [2022-01-10 17:54:12,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:12" (1/1) ... [2022-01-10 17:54:12,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:12" (1/1) ... [2022-01-10 17:54:12,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:12" (1/1) ... [2022-01-10 17:54:12,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:12" (1/1) ... [2022-01-10 17:54:12,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:12" (1/1) ... [2022-01-10 17:54:12,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:12" (1/1) ... [2022-01-10 17:54:13,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:54:13,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:54:13,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:54:13,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:54:13,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:12" (1/1) ... [2022-01-10 17:54:13,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:54:13,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:54:13,057 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 17:54:13,078 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 17:54:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:54:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:54:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:54:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:54:13,231 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:54:13,232 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:54:17,024 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:54:17,055 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:54:17,055 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:54:17,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:54:17 BoogieIcfgContainer [2022-01-10 17:54:17,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:54:17,062 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:54:17,062 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:54:17,064 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:54:17,066 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:54:17" (1/1) ... [2022-01-10 17:54:17,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:54:17 BasicIcfg [2022-01-10 17:54:17,667 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:54:17,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:54:17,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:54:17,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:54:17,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:54:11" (1/4) ... [2022-01-10 17:54:17,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363cb27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:54:17, skipping insertion in model container [2022-01-10 17:54:17,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:12" (2/4) ... [2022-01-10 17:54:17,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363cb27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:54:17, skipping insertion in model container [2022-01-10 17:54:17,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:54:17" (3/4) ... [2022-01-10 17:54:17,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363cb27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:54:17, skipping insertion in model container [2022-01-10 17:54:17,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:54:17" (4/4) ... [2022-01-10 17:54:17,673 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product09.cil.cTransformedIcfg [2022-01-10 17:54:17,678 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:54:17,678 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 17:54:17,721 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:54:17,726 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 17:54:17,727 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 17:54:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 2383 states, 2377 states have (on average 1.8763146823727388) internal successors, (4460), 2382 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 17:54:17,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 17:54:17,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:17,792 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 17:54:17,792 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:17,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:17,797 INFO L85 PathProgramCache]: Analyzing trace with hash 961251487, now seen corresponding path program 1 times [2022-01-10 17:54:17,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:17,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380844372] [2022-01-10 17:54:17,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:17,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:18,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:18,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380844372] [2022-01-10 17:54:18,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380844372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:18,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:18,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:18,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268228989] [2022-01-10 17:54:18,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:18,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:18,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:18,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:18,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:18,230 INFO L87 Difference]: Start difference. First operand has 2383 states, 2377 states have (on average 1.8763146823727388) internal successors, (4460), 2382 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 17:54:18,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:18,557 INFO L93 Difference]: Finished difference Result 7054 states and 13220 transitions. [2022-01-10 17:54:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:18,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 17:54:18,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:18,601 INFO L225 Difference]: With dead ends: 7054 [2022-01-10 17:54:18,601 INFO L226 Difference]: Without dead ends: 4673 [2022-01-10 17:54:18,613 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 17:54:18,618 INFO L933 BasicCegarLoop]: 8755 mSDtfsCounter, 4421 mSDsluCounter, 4327 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4421 SdHoareTripleChecker+Valid, 13082 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:18,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4421 Valid, 13082 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4673 states. [2022-01-10 17:54:18,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4673 to 2372. [2022-01-10 17:54:18,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2367 states have (on average 1.8741022391212505) internal successors, (4436), 2371 states have internal predecessors, (4436), 0 states have call successors, (0), 0 states 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 17:54:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 4436 transitions. [2022-01-10 17:54:18,760 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 4436 transitions. Word has length 58 [2022-01-10 17:54:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:18,761 INFO L470 AbstractCegarLoop]: Abstraction has 2372 states and 4436 transitions. [2022-01-10 17:54:18,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 17:54:18,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 4436 transitions. [2022-01-10 17:54:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 17:54:18,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:18,764 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 17:54:18,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:54:18,765 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:18,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:18,766 INFO L85 PathProgramCache]: Analyzing trace with hash -541070502, now seen corresponding path program 1 times [2022-01-10 17:54:18,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:18,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464833335] [2022-01-10 17:54:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:18,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:18,861 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 17:54:18,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:18,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464833335] [2022-01-10 17:54:18,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464833335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:18,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:18,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:18,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81432594] [2022-01-10 17:54:18,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:18,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:18,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:18,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:18,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:18,866 INFO L87 Difference]: Start difference. First operand 2372 states and 4436 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 17:54:19,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:19,133 INFO L93 Difference]: Finished difference Result 6959 states and 13028 transitions. [2022-01-10 17:54:19,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:19,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 17:54:19,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:19,155 INFO L225 Difference]: With dead ends: 6959 [2022-01-10 17:54:19,156 INFO L226 Difference]: Without dead ends: 4637 [2022-01-10 17:54:19,164 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 17:54:19,165 INFO L933 BasicCegarLoop]: 8618 mSDtfsCounter, 4323 mSDsluCounter, 4267 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4323 SdHoareTripleChecker+Valid, 12885 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:19,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4323 Valid, 12885 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:19,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4637 states. [2022-01-10 17:54:19,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4637 to 2372. [2022-01-10 17:54:19,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2367 states have (on average 1.8635403464300804) internal successors, (4411), 2371 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states 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 17:54:19,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 4411 transitions. [2022-01-10 17:54:19,246 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 4411 transitions. Word has length 65 [2022-01-10 17:54:19,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:19,247 INFO L470 AbstractCegarLoop]: Abstraction has 2372 states and 4411 transitions. [2022-01-10 17:54:19,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 17:54:19,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 4411 transitions. [2022-01-10 17:54:19,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 17:54:19,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:19,259 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] [2022-01-10 17:54:19,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:54:19,259 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash 429989613, now seen corresponding path program 1 times [2022-01-10 17:54:19,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:19,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606208877] [2022-01-10 17:54:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:19,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:19,379 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 17:54:19,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:19,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606208877] [2022-01-10 17:54:19,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606208877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:19,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:19,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:19,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135520236] [2022-01-10 17:54:19,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:19,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:19,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:19,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:19,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:19,383 INFO L87 Difference]: Start difference. First operand 2372 states and 4411 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 17:54:19,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:19,545 INFO L93 Difference]: Finished difference Result 4673 states and 8724 transitions. [2022-01-10 17:54:19,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:19,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 17:54:19,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:19,556 INFO L225 Difference]: With dead ends: 4673 [2022-01-10 17:54:19,556 INFO L226 Difference]: Without dead ends: 2372 [2022-01-10 17:54:19,562 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 17:54:19,565 INFO L933 BasicCegarLoop]: 4392 mSDtfsCounter, 4400 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4400 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:19,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4400 Valid, 4399 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:19,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2022-01-10 17:54:19,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2372. [2022-01-10 17:54:19,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2367 states have (on average 1.8626953950147866) internal successors, (4409), 2371 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states 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 17:54:19,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 4409 transitions. [2022-01-10 17:54:19,625 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 4409 transitions. Word has length 68 [2022-01-10 17:54:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:19,625 INFO L470 AbstractCegarLoop]: Abstraction has 2372 states and 4409 transitions. [2022-01-10 17:54:19,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 17:54:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 4409 transitions. [2022-01-10 17:54:19,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 17:54:19,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:19,630 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 17:54:19,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:54:19,631 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:19,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:19,631 INFO L85 PathProgramCache]: Analyzing trace with hash 46751827, now seen corresponding path program 1 times [2022-01-10 17:54:19,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:19,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568186955] [2022-01-10 17:54:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:19,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:19,736 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 17:54:19,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:19,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568186955] [2022-01-10 17:54:19,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568186955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:19,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:19,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:19,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891341262] [2022-01-10 17:54:19,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:19,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:19,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:19,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:19,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:19,739 INFO L87 Difference]: Start difference. First operand 2372 states and 4409 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 17:54:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:19,899 INFO L93 Difference]: Finished difference Result 4637 states and 8651 transitions. [2022-01-10 17:54:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:19,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 17:54:19,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:19,909 INFO L225 Difference]: With dead ends: 4637 [2022-01-10 17:54:19,910 INFO L226 Difference]: Without dead ends: 2372 [2022-01-10 17:54:19,913 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 17:54:19,914 INFO L933 BasicCegarLoop]: 4314 mSDtfsCounter, 4381 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4381 SdHoareTripleChecker+Valid, 4329 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:19,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4381 Valid, 4329 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:19,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2022-01-10 17:54:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2372. [2022-01-10 17:54:19,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2367 states have (on average 1.8584706379383185) internal successors, (4399), 2371 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states 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 17:54:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 4399 transitions. [2022-01-10 17:54:19,973 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 4399 transitions. Word has length 70 [2022-01-10 17:54:19,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:19,973 INFO L470 AbstractCegarLoop]: Abstraction has 2372 states and 4399 transitions. [2022-01-10 17:54:19,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 17:54:19,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 4399 transitions. [2022-01-10 17:54:19,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 17:54:19,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:19,976 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 17:54:19,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:54:19,977 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:19,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:19,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2135824265, now seen corresponding path program 1 times [2022-01-10 17:54:19,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:19,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146705771] [2022-01-10 17:54:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:19,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:20,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:20,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:20,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146705771] [2022-01-10 17:54:20,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146705771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:20,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:20,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:20,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135284432] [2022-01-10 17:54:20,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:20,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:20,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:20,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:20,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:20,084 INFO L87 Difference]: Start difference. First operand 2372 states and 4399 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 17:54:20,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:20,267 INFO L93 Difference]: Finished difference Result 5848 states and 10901 transitions. [2022-01-10 17:54:20,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:20,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 17:54:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:20,286 INFO L225 Difference]: With dead ends: 5848 [2022-01-10 17:54:20,286 INFO L226 Difference]: Without dead ends: 4670 [2022-01-10 17:54:20,289 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 17:54:20,290 INFO L933 BasicCegarLoop]: 6557 mSDtfsCounter, 4377 mSDsluCounter, 4307 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 10864 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:20,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4377 Valid, 10864 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:20,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2022-01-10 17:54:20,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 4670. [2022-01-10 17:54:20,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4670 states, 4665 states have (on average 1.8660235798499465) internal successors, (8705), 4669 states have internal predecessors, (8705), 0 states have call successors, (0), 0 states 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 17:54:20,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4670 states to 4670 states and 8705 transitions. [2022-01-10 17:54:20,409 INFO L78 Accepts]: Start accepts. Automaton has 4670 states and 8705 transitions. Word has length 72 [2022-01-10 17:54:20,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:20,410 INFO L470 AbstractCegarLoop]: Abstraction has 4670 states and 8705 transitions. [2022-01-10 17:54:20,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 17:54:20,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4670 states and 8705 transitions. [2022-01-10 17:54:20,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 17:54:20,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:20,414 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] [2022-01-10 17:54:20,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:54:20,414 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:20,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:20,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1786056585, now seen corresponding path program 1 times [2022-01-10 17:54:20,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:20,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393486623] [2022-01-10 17:54:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:20,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:20,484 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 17:54:20,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:20,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393486623] [2022-01-10 17:54:20,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393486623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:20,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:20,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:20,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946386738] [2022-01-10 17:54:20,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:20,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:20,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:20,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:20,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:20,486 INFO L87 Difference]: Start difference. First operand 4670 states and 8705 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 17:54:20,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:20,675 INFO L93 Difference]: Finished difference Result 11540 states and 21576 transitions. [2022-01-10 17:54:20,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:20,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-10 17:54:20,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:20,722 INFO L225 Difference]: With dead ends: 11540 [2022-01-10 17:54:20,722 INFO L226 Difference]: Without dead ends: 9208 [2022-01-10 17:54:20,730 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 17:54:20,732 INFO L933 BasicCegarLoop]: 4396 mSDtfsCounter, 4321 mSDsluCounter, 4310 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4321 SdHoareTripleChecker+Valid, 8706 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:20,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4321 Valid, 8706 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:20,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9208 states. [2022-01-10 17:54:21,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9208 to 9206. [2022-01-10 17:54:21,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9206 states, 9201 states have (on average 1.8709922834474513) internal successors, (17215), 9205 states have internal predecessors, (17215), 0 states have call successors, (0), 0 states 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 17:54:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9206 states to 9206 states and 17215 transitions. [2022-01-10 17:54:21,086 INFO L78 Accepts]: Start accepts. Automaton has 9206 states and 17215 transitions. Word has length 73 [2022-01-10 17:54:21,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:21,087 INFO L470 AbstractCegarLoop]: Abstraction has 9206 states and 17215 transitions. [2022-01-10 17:54:21,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 17:54:21,088 INFO L276 IsEmpty]: Start isEmpty. Operand 9206 states and 17215 transitions. [2022-01-10 17:54:21,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 17:54:21,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:21,095 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] [2022-01-10 17:54:21,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:54:21,095 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:21,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:21,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1606164644, now seen corresponding path program 1 times [2022-01-10 17:54:21,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:21,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525986429] [2022-01-10 17:54:21,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:21,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:21,217 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 17:54:21,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:21,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525986429] [2022-01-10 17:54:21,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525986429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:21,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:21,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:21,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329845563] [2022-01-10 17:54:21,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:21,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:21,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:21,219 INFO L87 Difference]: Start difference. First operand 9206 states and 17215 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 17:54:22,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:22,184 INFO L93 Difference]: Finished difference Result 45563 states and 85355 transitions. [2022-01-10 17:54:22,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 17:54:22,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-10 17:54:22,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:22,295 INFO L225 Difference]: With dead ends: 45563 [2022-01-10 17:54:22,295 INFO L226 Difference]: Without dead ends: 36380 [2022-01-10 17:54:22,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:54:22,321 INFO L933 BasicCegarLoop]: 12957 mSDtfsCounter, 12912 mSDsluCounter, 17417 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12912 SdHoareTripleChecker+Valid, 30374 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:22,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12912 Valid, 30374 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:22,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36380 states. [2022-01-10 17:54:22,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36380 to 9218. [2022-01-10 17:54:22,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9218 states, 9213 states have (on average 1.8698578096168457) internal successors, (17227), 9217 states have internal predecessors, (17227), 0 states have call successors, (0), 0 states 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 17:54:22,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9218 states to 9218 states and 17227 transitions. [2022-01-10 17:54:22,906 INFO L78 Accepts]: Start accepts. Automaton has 9218 states and 17227 transitions. Word has length 73 [2022-01-10 17:54:22,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:22,906 INFO L470 AbstractCegarLoop]: Abstraction has 9218 states and 17227 transitions. [2022-01-10 17:54:22,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 17:54:22,907 INFO L276 IsEmpty]: Start isEmpty. Operand 9218 states and 17227 transitions. [2022-01-10 17:54:22,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 17:54:22,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:22,914 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] [2022-01-10 17:54:22,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:54:22,914 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:22,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:22,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1707076611, now seen corresponding path program 1 times [2022-01-10 17:54:22,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:22,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557537277] [2022-01-10 17:54:22,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:22,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:23,011 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 17:54:23,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:23,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557537277] [2022-01-10 17:54:23,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557537277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:23,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:23,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:54:23,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291990009] [2022-01-10 17:54:23,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:23,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:54:23,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:23,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:54:23,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:23,013 INFO L87 Difference]: Start difference. First operand 9218 states and 17227 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 17:54:24,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:24,277 INFO L93 Difference]: Finished difference Result 45533 states and 85313 transitions. [2022-01-10 17:54:24,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:54:24,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-10 17:54:24,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:24,395 INFO L225 Difference]: With dead ends: 45533 [2022-01-10 17:54:24,395 INFO L226 Difference]: Without dead ends: 36332 [2022-01-10 17:54:24,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:24,421 INFO L933 BasicCegarLoop]: 17159 mSDtfsCounter, 21609 mSDsluCounter, 21433 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21609 SdHoareTripleChecker+Valid, 38592 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:24,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21609 Valid, 38592 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36332 states. [2022-01-10 17:54:25,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36332 to 9188. [2022-01-10 17:54:25,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9188 states, 9183 states have (on average 1.8712838941522378) internal successors, (17184), 9187 states have internal predecessors, (17184), 0 states have call successors, (0), 0 states 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 17:54:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9188 states to 9188 states and 17184 transitions. [2022-01-10 17:54:25,057 INFO L78 Accepts]: Start accepts. Automaton has 9188 states and 17184 transitions. Word has length 73 [2022-01-10 17:54:25,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:25,058 INFO L470 AbstractCegarLoop]: Abstraction has 9188 states and 17184 transitions. [2022-01-10 17:54:25,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 17:54:25,059 INFO L276 IsEmpty]: Start isEmpty. Operand 9188 states and 17184 transitions. [2022-01-10 17:54:25,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 17:54:25,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:25,066 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] [2022-01-10 17:54:25,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:54:25,066 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:25,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1837812846, now seen corresponding path program 1 times [2022-01-10 17:54:25,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:25,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507572931] [2022-01-10 17:54:25,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:25,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:25,278 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 17:54:25,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:25,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507572931] [2022-01-10 17:54:25,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507572931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:25,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:25,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:25,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955265173] [2022-01-10 17:54:25,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:25,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:25,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:25,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:25,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:25,284 INFO L87 Difference]: Start difference. First operand 9188 states and 17184 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 17:54:26,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:26,241 INFO L93 Difference]: Finished difference Result 36281 states and 67999 transitions. [2022-01-10 17:54:26,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:54:26,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-10 17:54:26,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:26,304 INFO L225 Difference]: With dead ends: 36281 [2022-01-10 17:54:26,304 INFO L226 Difference]: Without dead ends: 27140 [2022-01-10 17:54:26,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:54:26,323 INFO L933 BasicCegarLoop]: 12780 mSDtfsCounter, 12912 mSDsluCounter, 12744 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12912 SdHoareTripleChecker+Valid, 25524 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:26,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12912 Valid, 25524 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:26,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27140 states. [2022-01-10 17:54:26,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27140 to 9214. [2022-01-10 17:54:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9214 states, 9209 states have (on average 1.8701270496253666) internal successors, (17222), 9213 states have internal predecessors, (17222), 0 states have call successors, (0), 0 states 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 17:54:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9214 states to 9214 states and 17222 transitions. [2022-01-10 17:54:26,766 INFO L78 Accepts]: Start accepts. Automaton has 9214 states and 17222 transitions. Word has length 76 [2022-01-10 17:54:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:26,766 INFO L470 AbstractCegarLoop]: Abstraction has 9214 states and 17222 transitions. [2022-01-10 17:54:26,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 17:54:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 9214 states and 17222 transitions. [2022-01-10 17:54:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 17:54:26,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:26,773 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] [2022-01-10 17:54:26,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 17:54:26,774 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:26,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:26,774 INFO L85 PathProgramCache]: Analyzing trace with hash 998720184, now seen corresponding path program 1 times [2022-01-10 17:54:26,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:26,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329369491] [2022-01-10 17:54:26,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:26,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:26,855 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 17:54:26,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:26,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329369491] [2022-01-10 17:54:26,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329369491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:26,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:26,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:26,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87065753] [2022-01-10 17:54:26,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:26,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:26,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:26,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:26,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:26,857 INFO L87 Difference]: Start difference. First operand 9214 states and 17222 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 17:54:27,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:27,377 INFO L93 Difference]: Finished difference Result 20506 states and 38393 transitions. [2022-01-10 17:54:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:54:27,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 17:54:27,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:27,398 INFO L225 Difference]: With dead ends: 20506 [2022-01-10 17:54:27,398 INFO L226 Difference]: Without dead ends: 13615 [2022-01-10 17:54:27,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:27,410 INFO L933 BasicCegarLoop]: 4321 mSDtfsCounter, 8545 mSDsluCounter, 4333 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8545 SdHoareTripleChecker+Valid, 8654 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:27,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8545 Valid, 8654 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:27,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13615 states. [2022-01-10 17:54:27,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13615 to 9136. [2022-01-10 17:54:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9136 states, 9131 states have (on average 1.871536523929471) internal successors, (17089), 9135 states have internal predecessors, (17089), 0 states have call successors, (0), 0 states 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 17:54:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9136 states to 9136 states and 17089 transitions. [2022-01-10 17:54:27,747 INFO L78 Accepts]: Start accepts. Automaton has 9136 states and 17089 transitions. Word has length 77 [2022-01-10 17:54:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:27,747 INFO L470 AbstractCegarLoop]: Abstraction has 9136 states and 17089 transitions. [2022-01-10 17:54:27,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 17:54:27,748 INFO L276 IsEmpty]: Start isEmpty. Operand 9136 states and 17089 transitions. [2022-01-10 17:54:27,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 17:54:27,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:27,754 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] [2022-01-10 17:54:27,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 17:54:27,755 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:27,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:27,755 INFO L85 PathProgramCache]: Analyzing trace with hash -272169002, now seen corresponding path program 1 times [2022-01-10 17:54:27,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:27,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657447959] [2022-01-10 17:54:27,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:27,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:27,813 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 17:54:27,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:27,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657447959] [2022-01-10 17:54:27,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657447959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:27,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:27,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:27,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117453175] [2022-01-10 17:54:27,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:27,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:27,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:27,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:27,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:27,815 INFO L87 Difference]: Start difference. First operand 9136 states and 17089 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 17:54:28,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:28,524 INFO L93 Difference]: Finished difference Result 27213 states and 50978 transitions. [2022-01-10 17:54:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:28,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 17:54:28,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:28,550 INFO L225 Difference]: With dead ends: 27213 [2022-01-10 17:54:28,550 INFO L226 Difference]: Without dead ends: 18190 [2022-01-10 17:54:28,567 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 17:54:28,568 INFO L933 BasicCegarLoop]: 8559 mSDtfsCounter, 12797 mSDsluCounter, 12892 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12797 SdHoareTripleChecker+Valid, 21451 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:28,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12797 Valid, 21451 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:28,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18190 states. [2022-01-10 17:54:29,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18190 to 9142. [2022-01-10 17:54:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9142 states, 9137 states have (on average 1.8709642114479588) internal successors, (17095), 9141 states have internal predecessors, (17095), 0 states have call successors, (0), 0 states 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 17:54:29,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9142 states to 9142 states and 17095 transitions. [2022-01-10 17:54:29,038 INFO L78 Accepts]: Start accepts. Automaton has 9142 states and 17095 transitions. Word has length 78 [2022-01-10 17:54:29,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:29,039 INFO L470 AbstractCegarLoop]: Abstraction has 9142 states and 17095 transitions. [2022-01-10 17:54:29,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 17:54:29,039 INFO L276 IsEmpty]: Start isEmpty. Operand 9142 states and 17095 transitions. [2022-01-10 17:54:29,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 17:54:29,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:29,046 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] [2022-01-10 17:54:29,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 17:54:29,046 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:29,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:29,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1217126003, now seen corresponding path program 1 times [2022-01-10 17:54:29,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:29,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281947978] [2022-01-10 17:54:29,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:29,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:29,130 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 17:54:29,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:29,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281947978] [2022-01-10 17:54:29,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281947978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:29,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:29,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:29,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650695733] [2022-01-10 17:54:29,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:29,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:29,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:29,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:29,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:29,133 INFO L87 Difference]: Start difference. First operand 9142 states and 17095 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 17:54:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:29,421 INFO L93 Difference]: Finished difference Result 13687 states and 25609 transitions. [2022-01-10 17:54:29,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:29,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-01-10 17:54:29,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:29,428 INFO L225 Difference]: With dead ends: 13687 [2022-01-10 17:54:29,428 INFO L226 Difference]: Without dead ends: 4604 [2022-01-10 17:54:29,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:29,438 INFO L933 BasicCegarLoop]: 4316 mSDtfsCounter, 8544 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8544 SdHoareTripleChecker+Valid, 4355 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:29,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8544 Valid, 4355 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2022-01-10 17:54:29,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 4604. [2022-01-10 17:54:29,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4600 states have (on average 1.8665217391304347) internal successors, (8586), 4603 states have internal predecessors, (8586), 0 states have call successors, (0), 0 states 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 17:54:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 8586 transitions. [2022-01-10 17:54:29,642 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 8586 transitions. Word has length 80 [2022-01-10 17:54:29,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:29,643 INFO L470 AbstractCegarLoop]: Abstraction has 4604 states and 8586 transitions. [2022-01-10 17:54:29,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 17:54:29,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 8586 transitions. [2022-01-10 17:54:29,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 17:54:29,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:29,649 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] [2022-01-10 17:54:29,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 17:54:29,649 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:29,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:29,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1015665383, now seen corresponding path program 1 times [2022-01-10 17:54:29,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:29,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113288635] [2022-01-10 17:54:29,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:29,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:29,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:29,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113288635] [2022-01-10 17:54:29,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113288635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:29,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:29,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:54:29,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951451139] [2022-01-10 17:54:29,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:29,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:54:29,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:29,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:54:29,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:54:29,729 INFO L87 Difference]: Start difference. First operand 4604 states and 8586 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 17:54:29,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:29,990 INFO L93 Difference]: Finished difference Result 9145 states and 17080 transitions. [2022-01-10 17:54:29,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:54:29,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-10 17:54:29,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:29,997 INFO L225 Difference]: With dead ends: 9145 [2022-01-10 17:54:29,997 INFO L226 Difference]: Without dead ends: 4666 [2022-01-10 17:54:30,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:54:30,001 INFO L933 BasicCegarLoop]: 4335 mSDtfsCounter, 8609 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8609 SdHoareTripleChecker+Valid, 4470 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:30,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8609 Valid, 4470 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:30,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4666 states. [2022-01-10 17:54:30,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4666 to 4604. [2022-01-10 17:54:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4600 states have (on average 1.866086956521739) internal successors, (8584), 4603 states have internal predecessors, (8584), 0 states have call successors, (0), 0 states 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 17:54:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 8584 transitions. [2022-01-10 17:54:30,146 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 8584 transitions. Word has length 82 [2022-01-10 17:54:30,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:30,146 INFO L470 AbstractCegarLoop]: Abstraction has 4604 states and 8584 transitions. [2022-01-10 17:54:30,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 17:54:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 8584 transitions. [2022-01-10 17:54:30,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 17:54:30,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:30,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:30,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 17:54:30,150 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:30,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:30,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1813799156, now seen corresponding path program 1 times [2022-01-10 17:54:30,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:30,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038323506] [2022-01-10 17:54:30,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:30,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:30,234 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 17:54:30,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:30,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038323506] [2022-01-10 17:54:30,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038323506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:30,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:30,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 17:54:30,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150715328] [2022-01-10 17:54:30,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:30,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 17:54:30,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:30,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 17:54:30,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:54:30,236 INFO L87 Difference]: Start difference. First operand 4604 states and 8584 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 17:54:30,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:30,789 INFO L93 Difference]: Finished difference Result 18129 states and 33922 transitions. [2022-01-10 17:54:30,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 17:54:30,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 17:54:30,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:30,813 INFO L225 Difference]: With dead ends: 18129 [2022-01-10 17:54:30,814 INFO L226 Difference]: Without dead ends: 13650 [2022-01-10 17:54:30,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-10 17:54:30,823 INFO L933 BasicCegarLoop]: 8546 mSDtfsCounter, 21329 mSDsluCounter, 12813 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21329 SdHoareTripleChecker+Valid, 21359 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:30,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21329 Valid, 21359 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:30,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13650 states. [2022-01-10 17:54:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13650 to 4624. [2022-01-10 17:54:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4624 states, 4620 states have (on average 1.864069264069264) internal successors, (8612), 4623 states have internal predecessors, (8612), 0 states have call successors, (0), 0 states 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 17:54:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 8612 transitions. [2022-01-10 17:54:31,032 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 8612 transitions. Word has length 83 [2022-01-10 17:54:31,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:31,032 INFO L470 AbstractCegarLoop]: Abstraction has 4624 states and 8612 transitions. [2022-01-10 17:54:31,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 17:54:31,032 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 8612 transitions. [2022-01-10 17:54:31,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 17:54:31,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:31,036 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] [2022-01-10 17:54:31,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 17:54:31,036 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:31,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:31,037 INFO L85 PathProgramCache]: Analyzing trace with hash 274964789, now seen corresponding path program 1 times [2022-01-10 17:54:31,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:31,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242689094] [2022-01-10 17:54:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:31,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:31,127 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 17:54:31,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:31,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242689094] [2022-01-10 17:54:31,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242689094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:31,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:31,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:31,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067021774] [2022-01-10 17:54:31,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:31,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:31,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:31,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:31,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:31,129 INFO L87 Difference]: Start difference. First operand 4624 states and 8612 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 17:54:31,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:31,419 INFO L93 Difference]: Finished difference Result 8116 states and 15116 transitions. [2022-01-10 17:54:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:31,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-10 17:54:31,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:31,426 INFO L225 Difference]: With dead ends: 8116 [2022-01-10 17:54:31,427 INFO L226 Difference]: Without dead ends: 4653 [2022-01-10 17:54:31,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:31,432 INFO L933 BasicCegarLoop]: 4283 mSDtfsCounter, 4389 mSDsluCounter, 8538 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4389 SdHoareTripleChecker+Valid, 12821 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:31,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4389 Valid, 12821 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:31,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2022-01-10 17:54:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4621. [2022-01-10 17:54:31,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4621 states, 4617 states have (on average 1.8628979857050032) internal successors, (8601), 4620 states have internal predecessors, (8601), 0 states have call successors, (0), 0 states 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 17:54:31,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4621 states to 4621 states and 8601 transitions. [2022-01-10 17:54:31,679 INFO L78 Accepts]: Start accepts. Automaton has 4621 states and 8601 transitions. Word has length 84 [2022-01-10 17:54:31,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:31,679 INFO L470 AbstractCegarLoop]: Abstraction has 4621 states and 8601 transitions. [2022-01-10 17:54:31,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 17:54:31,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4621 states and 8601 transitions. [2022-01-10 17:54:31,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 17:54:31,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:31,683 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 17:54:31,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 17:54:31,683 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:31,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:31,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1286873324, now seen corresponding path program 1 times [2022-01-10 17:54:31,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:31,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322037458] [2022-01-10 17:54:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:31,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:31,772 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 17:54:31,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:31,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322037458] [2022-01-10 17:54:31,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322037458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:31,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:31,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:31,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867298881] [2022-01-10 17:54:31,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:31,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:31,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:31,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:31,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:31,775 INFO L87 Difference]: Start difference. First operand 4621 states and 8601 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 17:54:33,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:33,423 INFO L93 Difference]: Finished difference Result 18301 states and 34121 transitions. [2022-01-10 17:54:33,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:54:33,423 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 17:54:33,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:33,444 INFO L225 Difference]: With dead ends: 18301 [2022-01-10 17:54:33,444 INFO L226 Difference]: Without dead ends: 13856 [2022-01-10 17:54:33,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 17:54:33,453 INFO L933 BasicCegarLoop]: 8286 mSDtfsCounter, 16567 mSDsluCounter, 12500 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16567 SdHoareTripleChecker+Valid, 20786 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:33,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16567 Valid, 20786 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 17:54:33,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13856 states. [2022-01-10 17:54:33,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13856 to 4629. [2022-01-10 17:54:33,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4625 states have (on average 1.8614054054054054) internal successors, (8609), 4628 states have internal predecessors, (8609), 0 states have call successors, (0), 0 states 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 17:54:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 8609 transitions. [2022-01-10 17:54:33,680 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 8609 transitions. Word has length 85 [2022-01-10 17:54:33,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:33,681 INFO L470 AbstractCegarLoop]: Abstraction has 4629 states and 8609 transitions. [2022-01-10 17:54:33,681 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 17:54:33,681 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 8609 transitions. [2022-01-10 17:54:33,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 17:54:33,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:33,685 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 17:54:33,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 17:54:33,685 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:33,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash 479763395, now seen corresponding path program 1 times [2022-01-10 17:54:33,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:33,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166902991] [2022-01-10 17:54:33,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:33,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:33,751 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 17:54:33,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:33,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166902991] [2022-01-10 17:54:33,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166902991] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:33,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:33,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:33,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503148054] [2022-01-10 17:54:33,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:33,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:33,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:33,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:33,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:33,753 INFO L87 Difference]: Start difference. First operand 4629 states and 8609 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 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 17:54:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:35,106 INFO L93 Difference]: Finished difference Result 13253 states and 24631 transitions. [2022-01-10 17:54:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:35,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 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 17:54:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:35,119 INFO L225 Difference]: With dead ends: 13253 [2022-01-10 17:54:35,119 INFO L226 Difference]: Without dead ends: 8774 [2022-01-10 17:54:35,125 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 17:54:35,125 INFO L933 BasicCegarLoop]: 7441 mSDtfsCounter, 7415 mSDsluCounter, 5840 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7415 SdHoareTripleChecker+Valid, 13281 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:35,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7415 Valid, 13281 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 17:54:35,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8774 states. [2022-01-10 17:54:35,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8774 to 6295. [2022-01-10 17:54:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6295 states, 6291 states have (on average 1.842473374662216) internal successors, (11591), 6294 states have internal predecessors, (11591), 0 states have call successors, (0), 0 states 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 17:54:35,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6295 states to 6295 states and 11591 transitions. [2022-01-10 17:54:35,412 INFO L78 Accepts]: Start accepts. Automaton has 6295 states and 11591 transitions. Word has length 86 [2022-01-10 17:54:35,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:35,413 INFO L470 AbstractCegarLoop]: Abstraction has 6295 states and 11591 transitions. [2022-01-10 17:54:35,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 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 17:54:35,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6295 states and 11591 transitions. [2022-01-10 17:54:35,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 17:54:35,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:35,416 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 17:54:35,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 17:54:35,416 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:35,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:35,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1643550011, now seen corresponding path program 1 times [2022-01-10 17:54:35,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:35,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921657104] [2022-01-10 17:54:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:35,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:35,489 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 17:54:35,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:35,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921657104] [2022-01-10 17:54:35,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921657104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:35,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:35,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:35,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983000236] [2022-01-10 17:54:35,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:35,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:35,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:35,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:35,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:35,491 INFO L87 Difference]: Start difference. First operand 6295 states and 11591 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 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) [2022-01-10 17:54:37,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:37,464 INFO L93 Difference]: Finished difference Result 44777 states and 83067 transitions. [2022-01-10 17:54:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:54:37,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 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) Word has length 88 [2022-01-10 17:54:37,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:37,521 INFO L225 Difference]: With dead ends: 44777 [2022-01-10 17:54:37,522 INFO L226 Difference]: Without dead ends: 38650 [2022-01-10 17:54:37,531 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 17:54:37,532 INFO L933 BasicCegarLoop]: 6201 mSDtfsCounter, 27724 mSDsluCounter, 18273 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27724 SdHoareTripleChecker+Valid, 24474 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:37,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27724 Valid, 24474 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:37,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38650 states. [2022-01-10 17:54:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38650 to 11489. [2022-01-10 17:54:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11489 states, 11485 states have (on average 1.85084893339138) internal successors, (21257), 11488 states have internal predecessors, (21257), 0 states have call successors, (0), 0 states 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 17:54:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11489 states to 11489 states and 21257 transitions. [2022-01-10 17:54:38,204 INFO L78 Accepts]: Start accepts. Automaton has 11489 states and 21257 transitions. Word has length 88 [2022-01-10 17:54:38,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:38,204 INFO L470 AbstractCegarLoop]: Abstraction has 11489 states and 21257 transitions. [2022-01-10 17:54:38,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 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) [2022-01-10 17:54:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 11489 states and 21257 transitions. [2022-01-10 17:54:38,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 17:54:38,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:38,207 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 17:54:38,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 17:54:38,208 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:38,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:38,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1654866138, now seen corresponding path program 1 times [2022-01-10 17:54:38,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:38,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173067393] [2022-01-10 17:54:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:38,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:38,283 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 17:54:38,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:38,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173067393] [2022-01-10 17:54:38,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173067393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:38,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:38,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:38,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482141677] [2022-01-10 17:54:38,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:38,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:38,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:38,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:38,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:38,285 INFO L87 Difference]: Start difference. First operand 11489 states and 21257 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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) [2022-01-10 17:54:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:39,246 INFO L93 Difference]: Finished difference Result 20359 states and 37505 transitions. [2022-01-10 17:54:39,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:39,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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) Word has length 88 [2022-01-10 17:54:39,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:39,271 INFO L225 Difference]: With dead ends: 20359 [2022-01-10 17:54:39,272 INFO L226 Difference]: Without dead ends: 15590 [2022-01-10 17:54:39,280 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 17:54:39,281 INFO L933 BasicCegarLoop]: 4000 mSDtfsCounter, 2594 mSDsluCounter, 7763 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2594 SdHoareTripleChecker+Valid, 11763 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:39,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2594 Valid, 11763 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:39,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15590 states. [2022-01-10 17:54:39,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15590 to 11509. [2022-01-10 17:54:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11509 states, 11505 states have (on average 1.8493698392003477) internal successors, (21277), 11508 states have internal predecessors, (21277), 0 states have call successors, (0), 0 states 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 17:54:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11509 states to 11509 states and 21277 transitions. [2022-01-10 17:54:39,860 INFO L78 Accepts]: Start accepts. Automaton has 11509 states and 21277 transitions. Word has length 88 [2022-01-10 17:54:39,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:39,861 INFO L470 AbstractCegarLoop]: Abstraction has 11509 states and 21277 transitions. [2022-01-10 17:54:39,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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) [2022-01-10 17:54:39,861 INFO L276 IsEmpty]: Start isEmpty. Operand 11509 states and 21277 transitions. [2022-01-10 17:54:39,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 17:54:39,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:39,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:39,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 17:54:39,864 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:39,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:39,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1069536975, now seen corresponding path program 1 times [2022-01-10 17:54:39,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:39,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646181368] [2022-01-10 17:54:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:39,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:39,938 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 17:54:39,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:39,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646181368] [2022-01-10 17:54:39,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646181368] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:39,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:39,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:39,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710722336] [2022-01-10 17:54:39,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:39,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:39,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:39,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:39,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:39,940 INFO L87 Difference]: Start difference. First operand 11509 states and 21277 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 17:54:41,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:41,074 INFO L93 Difference]: Finished difference Result 25106 states and 46409 transitions. [2022-01-10 17:54:41,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:54:41,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-10 17:54:41,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:41,109 INFO L225 Difference]: With dead ends: 25106 [2022-01-10 17:54:41,110 INFO L226 Difference]: Without dead ends: 20197 [2022-01-10 17:54:41,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:41,124 INFO L933 BasicCegarLoop]: 5830 mSDtfsCounter, 5754 mSDsluCounter, 5933 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5754 SdHoareTripleChecker+Valid, 11763 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:41,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5754 Valid, 11763 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:41,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20197 states. [2022-01-10 17:54:41,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20197 to 16183. [2022-01-10 17:54:42,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16183 states, 16179 states have (on average 1.847889239137153) internal successors, (29897), 16182 states have internal predecessors, (29897), 0 states have call successors, (0), 0 states 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 17:54:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16183 states to 16183 states and 29897 transitions. [2022-01-10 17:54:42,033 INFO L78 Accepts]: Start accepts. Automaton has 16183 states and 29897 transitions. Word has length 94 [2022-01-10 17:54:42,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:42,033 INFO L470 AbstractCegarLoop]: Abstraction has 16183 states and 29897 transitions. [2022-01-10 17:54:42,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 17:54:42,033 INFO L276 IsEmpty]: Start isEmpty. Operand 16183 states and 29897 transitions. [2022-01-10 17:54:42,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 17:54:42,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:42,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:42,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 17:54:42,036 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:42,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:42,037 INFO L85 PathProgramCache]: Analyzing trace with hash 76115753, now seen corresponding path program 1 times [2022-01-10 17:54:42,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:42,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783788109] [2022-01-10 17:54:42,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:42,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:42,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:42,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783788109] [2022-01-10 17:54:42,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783788109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:42,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:42,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:42,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145789241] [2022-01-10 17:54:42,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:42,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:42,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:42,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:42,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:42,107 INFO L87 Difference]: Start difference. First operand 16183 states and 29897 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 17:54:43,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:43,498 INFO L93 Difference]: Finished difference Result 30253 states and 55911 transitions. [2022-01-10 17:54:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:43,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-01-10 17:54:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:43,533 INFO L225 Difference]: With dead ends: 30253 [2022-01-10 17:54:43,534 INFO L226 Difference]: Without dead ends: 20858 [2022-01-10 17:54:43,549 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 17:54:43,549 INFO L933 BasicCegarLoop]: 3990 mSDtfsCounter, 2127 mSDsluCounter, 3918 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2127 SdHoareTripleChecker+Valid, 7908 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:43,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2127 Valid, 7908 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:43,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20858 states. [2022-01-10 17:54:44,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20858 to 20819. [2022-01-10 17:54:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20819 states, 20815 states have (on average 1.848522699975979) internal successors, (38477), 20818 states have internal predecessors, (38477), 0 states have call successors, (0), 0 states 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 17:54:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20819 states to 20819 states and 38477 transitions. [2022-01-10 17:54:44,721 INFO L78 Accepts]: Start accepts. Automaton has 20819 states and 38477 transitions. Word has length 95 [2022-01-10 17:54:44,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:44,722 INFO L470 AbstractCegarLoop]: Abstraction has 20819 states and 38477 transitions. [2022-01-10 17:54:44,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 17:54:44,722 INFO L276 IsEmpty]: Start isEmpty. Operand 20819 states and 38477 transitions. [2022-01-10 17:54:44,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 17:54:44,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:44,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:44,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 17:54:44,725 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:44,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:44,726 INFO L85 PathProgramCache]: Analyzing trace with hash -768356118, now seen corresponding path program 1 times [2022-01-10 17:54:44,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:44,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385378246] [2022-01-10 17:54:44,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:44,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:44,803 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 17:54:44,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:44,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385378246] [2022-01-10 17:54:44,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385378246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:44,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:44,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:44,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276158787] [2022-01-10 17:54:44,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:44,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:44,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:44,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:44,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:44,805 INFO L87 Difference]: Start difference. First operand 20819 states and 38477 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 17:54:46,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:46,659 INFO L93 Difference]: Finished difference Result 45463 states and 83967 transitions. [2022-01-10 17:54:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:46,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-01-10 17:54:46,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:46,713 INFO L225 Difference]: With dead ends: 45463 [2022-01-10 17:54:46,713 INFO L226 Difference]: Without dead ends: 31236 [2022-01-10 17:54:46,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:54:46,725 INFO L933 BasicCegarLoop]: 9251 mSDtfsCounter, 5934 mSDsluCounter, 9065 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5934 SdHoareTripleChecker+Valid, 18316 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:46,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5934 Valid, 18316 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:46,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31236 states. [2022-01-10 17:54:47,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31236 to 20585. [2022-01-10 17:54:47,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20585 states, 20581 states have (on average 1.8478693941013555) internal successors, (38031), 20584 states have internal predecessors, (38031), 0 states have call successors, (0), 0 states 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 17:54:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20585 states to 20585 states and 38031 transitions. [2022-01-10 17:54:48,043 INFO L78 Accepts]: Start accepts. Automaton has 20585 states and 38031 transitions. Word has length 95 [2022-01-10 17:54:48,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:48,043 INFO L470 AbstractCegarLoop]: Abstraction has 20585 states and 38031 transitions. [2022-01-10 17:54:48,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 17:54:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 20585 states and 38031 transitions. [2022-01-10 17:54:48,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 17:54:48,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:48,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:48,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 17:54:48,046 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:48,047 INFO L85 PathProgramCache]: Analyzing trace with hash -858924373, now seen corresponding path program 1 times [2022-01-10 17:54:48,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:48,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141004122] [2022-01-10 17:54:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:48,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:48,137 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 17:54:48,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:48,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141004122] [2022-01-10 17:54:48,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141004122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:48,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:48,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:48,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767211856] [2022-01-10 17:54:48,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:48,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:48,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:48,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:48,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:48,141 INFO L87 Difference]: Start difference. First operand 20585 states and 38031 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 17:54:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:51,227 INFO L93 Difference]: Finished difference Result 63560 states and 117573 transitions. [2022-01-10 17:54:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:54:51,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-01-10 17:54:51,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:51,320 INFO L225 Difference]: With dead ends: 63560 [2022-01-10 17:54:51,320 INFO L226 Difference]: Without dead ends: 49567 [2022-01-10 17:54:51,337 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 17:54:51,337 INFO L933 BasicCegarLoop]: 5907 mSDtfsCounter, 11286 mSDsluCounter, 12827 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11286 SdHoareTripleChecker+Valid, 18734 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:51,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11286 Valid, 18734 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 17:54:51,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49567 states. [2022-01-10 17:54:52,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49567 to 20585. [2022-01-10 17:54:52,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20585 states, 20581 states have (on average 1.8468976240221564) internal successors, (38011), 20584 states have internal predecessors, (38011), 0 states have call successors, (0), 0 states 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 17:54:52,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20585 states to 20585 states and 38011 transitions. [2022-01-10 17:54:52,838 INFO L78 Accepts]: Start accepts. Automaton has 20585 states and 38011 transitions. Word has length 96 [2022-01-10 17:54:52,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:52,838 INFO L470 AbstractCegarLoop]: Abstraction has 20585 states and 38011 transitions. [2022-01-10 17:54:52,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 17:54:52,839 INFO L276 IsEmpty]: Start isEmpty. Operand 20585 states and 38011 transitions. [2022-01-10 17:54:52,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 17:54:52,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:52,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:52,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 17:54:52,842 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:52,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:52,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1072255082, now seen corresponding path program 1 times [2022-01-10 17:54:52,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:52,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006715881] [2022-01-10 17:54:52,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:52,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:52,911 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 17:54:52,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:52,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006715881] [2022-01-10 17:54:52,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006715881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:52,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:52,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:52,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035464344] [2022-01-10 17:54:52,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:52,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:52,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:52,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:52,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:52,915 INFO L87 Difference]: Start difference. First operand 20585 states and 38011 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 17:54:55,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:55,305 INFO L93 Difference]: Finished difference Result 50301 states and 92847 transitions. [2022-01-10 17:54:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:55,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-01-10 17:54:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:55,362 INFO L225 Difference]: With dead ends: 50301 [2022-01-10 17:54:55,362 INFO L226 Difference]: Without dead ends: 32620 [2022-01-10 17:54:55,381 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 17:54:55,381 INFO L933 BasicCegarLoop]: 3894 mSDtfsCounter, 2265 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2265 SdHoareTripleChecker+Valid, 7432 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:55,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2265 Valid, 7432 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 17:54:55,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32620 states. [2022-01-10 17:54:56,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32620 to 20585. [2022-01-10 17:54:56,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20585 states, 20581 states have (on average 1.832904134881687) internal successors, (37723), 20584 states have internal predecessors, (37723), 0 states have call successors, (0), 0 states 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 17:54:57,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20585 states to 20585 states and 37723 transitions. [2022-01-10 17:54:57,030 INFO L78 Accepts]: Start accepts. Automaton has 20585 states and 37723 transitions. Word has length 97 [2022-01-10 17:54:57,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:57,030 INFO L470 AbstractCegarLoop]: Abstraction has 20585 states and 37723 transitions. [2022-01-10 17:54:57,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 17:54:57,031 INFO L276 IsEmpty]: Start isEmpty. Operand 20585 states and 37723 transitions. [2022-01-10 17:54:57,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 17:54:57,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:57,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:57,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 17:54:57,034 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:57,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:57,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1031314936, now seen corresponding path program 1 times [2022-01-10 17:54:57,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:57,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652036823] [2022-01-10 17:54:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:57,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:57,103 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 17:54:57,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:57,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652036823] [2022-01-10 17:54:57,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652036823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:57,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:57,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:57,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303085836] [2022-01-10 17:54:57,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:57,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:57,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:57,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:57,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:57,105 INFO L87 Difference]: Start difference. First operand 20585 states and 37723 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 17:54:58,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:58,434 INFO L93 Difference]: Finished difference Result 34857 states and 63703 transitions. [2022-01-10 17:54:58,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:58,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-01-10 17:54:58,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:58,463 INFO L225 Difference]: With dead ends: 34857 [2022-01-10 17:54:58,464 INFO L226 Difference]: Without dead ends: 20604 [2022-01-10 17:54:58,478 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 17:54:58,479 INFO L933 BasicCegarLoop]: 3876 mSDtfsCounter, 2292 mSDsluCounter, 3250 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2292 SdHoareTripleChecker+Valid, 7126 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:58,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2292 Valid, 7126 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:58,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20604 states. [2022-01-10 17:54:59,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20604 to 20585. [2022-01-10 17:54:59,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20585 states, 20581 states have (on average 1.818327583693698) internal successors, (37423), 20584 states have internal predecessors, (37423), 0 states have call successors, (0), 0 states 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 17:54:59,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20585 states to 20585 states and 37423 transitions. [2022-01-10 17:54:59,848 INFO L78 Accepts]: Start accepts. Automaton has 20585 states and 37423 transitions. Word has length 97 [2022-01-10 17:54:59,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:59,849 INFO L470 AbstractCegarLoop]: Abstraction has 20585 states and 37423 transitions. [2022-01-10 17:54:59,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 17:54:59,849 INFO L276 IsEmpty]: Start isEmpty. Operand 20585 states and 37423 transitions. [2022-01-10 17:54:59,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 17:54:59,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:59,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:59,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 17:54:59,853 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:59,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:59,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1871943136, now seen corresponding path program 1 times [2022-01-10 17:54:59,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:59,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120141666] [2022-01-10 17:54:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:59,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:59,941 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 17:54:59,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:59,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120141666] [2022-01-10 17:54:59,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120141666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:59,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:59,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:59,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902209861] [2022-01-10 17:54:59,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:59,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:59,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:59,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:59,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:59,945 INFO L87 Difference]: Start difference. First operand 20585 states and 37423 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:02,107 INFO L93 Difference]: Finished difference Result 45326 states and 82611 transitions. [2022-01-10 17:55:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:55:02,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-10 17:55:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:02,160 INFO L225 Difference]: With dead ends: 45326 [2022-01-10 17:55:02,161 INFO L226 Difference]: Without dead ends: 31749 [2022-01-10 17:55:02,179 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 17:55:02,179 INFO L933 BasicCegarLoop]: 5691 mSDtfsCounter, 10824 mSDsluCounter, 13025 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10824 SdHoareTripleChecker+Valid, 18716 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:02,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10824 Valid, 18716 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 17:55:02,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31749 states. [2022-01-10 17:55:03,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31749 to 20563. [2022-01-10 17:55:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20563 states, 20559 states have (on average 1.8177440536991099) internal successors, (37371), 20562 states have internal predecessors, (37371), 0 states have call successors, (0), 0 states 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 17:55:03,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20563 states to 20563 states and 37371 transitions. [2022-01-10 17:55:03,813 INFO L78 Accepts]: Start accepts. Automaton has 20563 states and 37371 transitions. Word has length 98 [2022-01-10 17:55:03,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:03,813 INFO L470 AbstractCegarLoop]: Abstraction has 20563 states and 37371 transitions. [2022-01-10 17:55:03,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand 20563 states and 37371 transitions. [2022-01-10 17:55:03,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 17:55:03,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:03,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:03,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 17:55:03,817 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:03,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:03,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1436295490, now seen corresponding path program 1 times [2022-01-10 17:55:03,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:03,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437906399] [2022-01-10 17:55:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:03,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:03,977 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 17:55:03,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:03,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437906399] [2022-01-10 17:55:03,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437906399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:03,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:03,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:55:03,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369517183] [2022-01-10 17:55:03,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:03,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 17:55:03,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:03,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 17:55:03,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:55:03,979 INFO L87 Difference]: Start difference. First operand 20563 states and 37371 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)