/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_spec14_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:53:22,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:53:22,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:53:23,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:53:23,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:53:23,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:53:23,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:53:23,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:53:23,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:53:23,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:53:23,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:53:23,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:53:23,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:53:23,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:53:23,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:53:23,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:53:23,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:53:23,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:53:23,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:53:23,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:53:23,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:53:23,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:53:23,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:53:23,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:53:23,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:53:23,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:53:23,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:53:23,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:53:23,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:53:23,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:53:23,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:53:23,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:53:23,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:53:23,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:53:23,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:53:23,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:53:23,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:53:23,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:53:23,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:53:23,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:53:23,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:53:23,077 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 17:53:23,089 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:53:23,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:53:23,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:53:23,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:53:23,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:53:23,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:53:23,091 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:53:23,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:53:23,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:53:23,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:53:23,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:53:23,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:53:23,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:53:23,092 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:53:23,092 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:53:23,092 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:53:23,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:53:23,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:53:23,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:53:23,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:53:23,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:53:23,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:53:23,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:53:23,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:53:23,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:53:23,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:53:23,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:53:23,094 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:53:23,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:53:23,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:53:23,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:53:23,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:53:23,095 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:53:23,095 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:53:23,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:53:23,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:53:23,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:53:23,285 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:53:23,286 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:53:23,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product23.cil.c [2022-01-10 17:53:23,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aefac2ed0/530662d37587485fb7ca44bcb808bb6d/FLAG0ec1422ea [2022-01-10 17:53:23,786 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:53:23,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product23.cil.c [2022-01-10 17:53:23,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aefac2ed0/530662d37587485fb7ca44bcb808bb6d/FLAG0ec1422ea [2022-01-10 17:53:23,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aefac2ed0/530662d37587485fb7ca44bcb808bb6d [2022-01-10 17:53:23,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:53:23,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:53:23,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:53:23,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:53:23,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:53:23,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:53:23" (1/1) ... [2022-01-10 17:53:23,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1f2d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:23, skipping insertion in model container [2022-01-10 17:53:23,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:53:23" (1/1) ... [2022-01-10 17:53:23,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:53:23,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:53:24,138 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_spec14_product23.cil.c[8585,8598] [2022-01-10 17:53:24,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:53:24,292 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:53:24,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:53:24,313 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_spec14_product23.cil.c[8585,8598] [2022-01-10 17:53:24,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:53:24,380 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:53:24,394 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_spec14_product23.cil.c[8585,8598] [2022-01-10 17:53:24,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:53:24,473 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:53:24,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:24 WrapperNode [2022-01-10 17:53:24,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:53:24,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:53:24,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:53:24,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:53:24,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:24" (1/1) ... [2022-01-10 17:53:24,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:24" (1/1) ... [2022-01-10 17:53:24,708 INFO L137 Inliner]: procedures = 95, calls = 340, calls flagged for inlining = 193, calls inlined = 981, statements flattened = 33012 [2022-01-10 17:53:24,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:53:24,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:53:24,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:53:24,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:53:24,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:24" (1/1) ... [2022-01-10 17:53:24,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:24" (1/1) ... [2022-01-10 17:53:24,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:24" (1/1) ... [2022-01-10 17:53:24,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:24" (1/1) ... [2022-01-10 17:53:25,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:24" (1/1) ... [2022-01-10 17:53:25,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:24" (1/1) ... [2022-01-10 17:53:25,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:24" (1/1) ... [2022-01-10 17:53:25,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:53:25,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:53:25,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:53:25,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:53:25,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:24" (1/1) ... [2022-01-10 17:53:25,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:53:25,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:53:25,242 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 17:53:25,260 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 17:53:25,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:53:25,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:53:25,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:53:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:53:25,550 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:53:25,551 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:53:35,340 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:53:35,383 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:53:35,383 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:53:35,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:53:35 BoogieIcfgContainer [2022-01-10 17:53:35,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:53:35,392 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:53:35,392 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:53:35,393 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:53:35,395 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:53:35" (1/1) ... [2022-01-10 17:53:36,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:53:36 BasicIcfg [2022-01-10 17:53:36,985 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:53:36,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:53:36,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:53:36,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:53:36,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:53:23" (1/4) ... [2022-01-10 17:53:36,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5e24c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:53:36, skipping insertion in model container [2022-01-10 17:53:36,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:24" (2/4) ... [2022-01-10 17:53:36,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5e24c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:53:36, skipping insertion in model container [2022-01-10 17:53:36,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:53:35" (3/4) ... [2022-01-10 17:53:36,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5e24c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:53:36, skipping insertion in model container [2022-01-10 17:53:36,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:53:36" (4/4) ... [2022-01-10 17:53:36,992 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product23.cil.cTransformedIcfg [2022-01-10 17:53:36,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:53:36,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 17:53:37,168 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:53:37,174 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 17:53:37,174 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 17:53:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 8721 states, 8715 states have (on average 1.8746987951807228) internal successors, (16338), 8720 states have internal predecessors, (16338), 0 states have call successors, (0), 0 states 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 17:53:37,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 17:53:37,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:37,291 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] [2022-01-10 17:53:37,292 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 17:53:37,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:37,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2117602576, now seen corresponding path program 1 times [2022-01-10 17:53:37,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:37,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162620098] [2022-01-10 17:53:37,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:37,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:37,565 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 17:53:37,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:37,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162620098] [2022-01-10 17:53:37,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162620098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:37,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:37,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:53:37,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096839688] [2022-01-10 17:53:37,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:37,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:53:37,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:37,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:53:37,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:53:37,608 INFO L87 Difference]: Start difference. First operand has 8721 states, 8715 states have (on average 1.8746987951807228) internal successors, (16338), 8720 states have internal predecessors, (16338), 0 states have call successors, (0), 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 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 17:53:38,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:38,031 INFO L93 Difference]: Finished difference Result 20945 states and 39245 transitions. [2022-01-10 17:53:38,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:53:38,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-10 17:53:38,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:38,096 INFO L225 Difference]: With dead ends: 20945 [2022-01-10 17:53:38,097 INFO L226 Difference]: Without dead ends: 12223 [2022-01-10 17:53:38,117 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 17:53:38,122 INFO L933 BasicCegarLoop]: 22904 mSDtfsCounter, 16300 mSDsluCounter, 6597 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16300 SdHoareTripleChecker+Valid, 29501 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 17:53:38,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16300 Valid, 29501 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:53:38,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12223 states. [2022-01-10 17:53:38,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12223 to 8709. [2022-01-10 17:53:38,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8709 states, 8704 states have (on average 1.8739659926470589) internal successors, (16311), 8708 states have internal predecessors, (16311), 0 states have call successors, (0), 0 states 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 17:53:38,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8709 states to 8709 states and 16311 transitions. [2022-01-10 17:53:38,407 INFO L78 Accepts]: Start accepts. Automaton has 8709 states and 16311 transitions. Word has length 48 [2022-01-10 17:53:38,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:38,407 INFO L470 AbstractCegarLoop]: Abstraction has 8709 states and 16311 transitions. [2022-01-10 17:53:38,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 17:53:38,408 INFO L276 IsEmpty]: Start isEmpty. Operand 8709 states and 16311 transitions. [2022-01-10 17:53:38,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 17:53:38,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:38,411 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] [2022-01-10 17:53:38,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:53:38,412 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 17:53:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:38,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1684214027, now seen corresponding path program 1 times [2022-01-10 17:53:38,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:38,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424842204] [2022-01-10 17:53:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:38,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:38,562 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 17:53:38,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:38,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424842204] [2022-01-10 17:53:38,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424842204] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:38,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:38,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:53:38,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211092300] [2022-01-10 17:53:38,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:38,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:53:38,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:38,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:53:38,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:53:38,569 INFO L87 Difference]: Start difference. First operand 8709 states and 16311 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 17:53:39,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:39,736 INFO L93 Difference]: Finished difference Result 34975 states and 65513 transitions. [2022-01-10 17:53:39,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:53:39,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-10 17:53:39,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:39,817 INFO L225 Difference]: With dead ends: 34975 [2022-01-10 17:53:39,817 INFO L226 Difference]: Without dead ends: 26279 [2022-01-10 17:53:39,831 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 17:53:39,832 INFO L933 BasicCegarLoop]: 49197 mSDtfsCounter, 68628 mSDsluCounter, 46079 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68628 SdHoareTripleChecker+Valid, 95276 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:53:39,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68628 Valid, 95276 Invalid, 41 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:53:39,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26279 states. [2022-01-10 17:53:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26279 to 8709. [2022-01-10 17:53:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8709 states, 8704 states have (on average 1.8737362132352942) internal successors, (16309), 8708 states have internal predecessors, (16309), 0 states have call successors, (0), 0 states 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 17:53:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8709 states to 8709 states and 16309 transitions. [2022-01-10 17:53:40,171 INFO L78 Accepts]: Start accepts. Automaton has 8709 states and 16309 transitions. Word has length 53 [2022-01-10 17:53:40,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:40,173 INFO L470 AbstractCegarLoop]: Abstraction has 8709 states and 16309 transitions. [2022-01-10 17:53:40,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 17:53:40,176 INFO L276 IsEmpty]: Start isEmpty. Operand 8709 states and 16309 transitions. [2022-01-10 17:53:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 17:53:40,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:40,184 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] [2022-01-10 17:53:40,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:53:40,184 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 17:53:40,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:40,185 INFO L85 PathProgramCache]: Analyzing trace with hash 251446260, now seen corresponding path program 1 times [2022-01-10 17:53:40,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:40,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929485498] [2022-01-10 17:53:40,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:40,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:40,252 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 17:53:40,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:40,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929485498] [2022-01-10 17:53:40,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929485498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:40,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:40,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:53:40,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133256259] [2022-01-10 17:53:40,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:40,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:53:40,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:40,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:53:40,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:53:40,253 INFO L87 Difference]: Start difference. First operand 8709 states and 16309 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 17:53:40,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:40,624 INFO L93 Difference]: Finished difference Result 20847 states and 39044 transitions. [2022-01-10 17:53:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:53:40,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-10 17:53:40,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:40,651 INFO L225 Difference]: With dead ends: 20847 [2022-01-10 17:53:40,652 INFO L226 Difference]: Without dead ends: 12187 [2022-01-10 17:53:40,668 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 17:53:40,672 INFO L933 BasicCegarLoop]: 22759 mSDtfsCounter, 16198 mSDsluCounter, 6533 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16198 SdHoareTripleChecker+Valid, 29292 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 17:53:40,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16198 Valid, 29292 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:53:40,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12187 states. [2022-01-10 17:53:40,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12187 to 8709. [2022-01-10 17:53:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8709 states, 8704 states have (on average 1.8708639705882353) internal successors, (16284), 8708 states have internal predecessors, (16284), 0 states have call successors, (0), 0 states 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 17:53:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8709 states to 8709 states and 16284 transitions. [2022-01-10 17:53:40,946 INFO L78 Accepts]: Start accepts. Automaton has 8709 states and 16284 transitions. Word has length 53 [2022-01-10 17:53:40,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:40,946 INFO L470 AbstractCegarLoop]: Abstraction has 8709 states and 16284 transitions. [2022-01-10 17:53:40,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 17:53:40,947 INFO L276 IsEmpty]: Start isEmpty. Operand 8709 states and 16284 transitions. [2022-01-10 17:53:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 17:53:40,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:40,950 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] [2022-01-10 17:53:40,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:53:40,950 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 17:53:40,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:40,951 INFO L85 PathProgramCache]: Analyzing trace with hash 946763877, now seen corresponding path program 1 times [2022-01-10 17:53:40,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:40,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148782283] [2022-01-10 17:53:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:40,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:41,053 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 17:53:41,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:41,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148782283] [2022-01-10 17:53:41,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148782283] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:41,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:41,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:53:41,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943547651] [2022-01-10 17:53:41,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:41,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:53:41,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:41,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:53:41,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:53:41,055 INFO L87 Difference]: Start difference. First operand 8709 states and 16284 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 17:53:41,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:41,397 INFO L93 Difference]: Finished difference Result 16916 states and 31577 transitions. [2022-01-10 17:53:41,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:53:41,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 17:53:41,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:41,417 INFO L225 Difference]: With dead ends: 16916 [2022-01-10 17:53:41,417 INFO L226 Difference]: Without dead ends: 9144 [2022-01-10 17:53:41,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:53:41,433 INFO L933 BasicCegarLoop]: 16999 mSDtfsCounter, 8572 mSDsluCounter, 8378 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8572 SdHoareTripleChecker+Valid, 25377 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:53:41,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8572 Valid, 25377 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:53:41,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9144 states. [2022-01-10 17:53:41,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9144 to 9134. [2022-01-10 17:53:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9134 states, 9129 states have (on average 1.8626355570161026) internal successors, (17004), 9133 states have internal predecessors, (17004), 0 states have call successors, (0), 0 states 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 17:53:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9134 states to 9134 states and 17004 transitions. [2022-01-10 17:53:41,726 INFO L78 Accepts]: Start accepts. Automaton has 9134 states and 17004 transitions. Word has length 56 [2022-01-10 17:53:41,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:41,727 INFO L470 AbstractCegarLoop]: Abstraction has 9134 states and 17004 transitions. [2022-01-10 17:53:41,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 17:53:41,727 INFO L276 IsEmpty]: Start isEmpty. Operand 9134 states and 17004 transitions. [2022-01-10 17:53:41,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 17:53:41,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:41,731 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] [2022-01-10 17:53:41,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:53:41,731 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 17:53:41,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:41,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1013770630, now seen corresponding path program 1 times [2022-01-10 17:53:41,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:41,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990335928] [2022-01-10 17:53:41,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:41,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:41,847 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 17:53:41,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:41,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990335928] [2022-01-10 17:53:41,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990335928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:41,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:41,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:53:41,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362662835] [2022-01-10 17:53:41,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:41,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:53:41,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:41,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:53:41,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:53:41,849 INFO L87 Difference]: Start difference. First operand 9134 states and 17004 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 17:53:43,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:43,038 INFO L93 Difference]: Finished difference Result 38336 states and 71412 transitions. [2022-01-10 17:53:43,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 17:53:43,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 17:53:43,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:43,113 INFO L225 Difference]: With dead ends: 38336 [2022-01-10 17:53:43,114 INFO L226 Difference]: Without dead ends: 29230 [2022-01-10 17:53:43,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:53:43,134 INFO L933 BasicCegarLoop]: 45443 mSDtfsCounter, 48533 mSDsluCounter, 42407 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48533 SdHoareTripleChecker+Valid, 87850 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:53:43,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48533 Valid, 87850 Invalid, 67 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:53:43,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29230 states. [2022-01-10 17:53:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29230 to 9119. [2022-01-10 17:53:43,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9119 states, 9114 states have (on average 1.8635066929997806) internal successors, (16984), 9118 states have internal predecessors, (16984), 0 states have call successors, (0), 0 states 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 17:53:43,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9119 states to 9119 states and 16984 transitions. [2022-01-10 17:53:43,575 INFO L78 Accepts]: Start accepts. Automaton has 9119 states and 16984 transitions. Word has length 56 [2022-01-10 17:53:43,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:43,576 INFO L470 AbstractCegarLoop]: Abstraction has 9119 states and 16984 transitions. [2022-01-10 17:53:43,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 17:53:43,576 INFO L276 IsEmpty]: Start isEmpty. Operand 9119 states and 16984 transitions. [2022-01-10 17:53:43,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 17:53:43,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:43,578 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 17:53:43,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:53:43,579 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:53:43,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:43,579 INFO L85 PathProgramCache]: Analyzing trace with hash -497743841, now seen corresponding path program 1 times [2022-01-10 17:53:43,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:43,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798739999] [2022-01-10 17:53:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:43,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:43,633 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 17:53:43,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:43,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798739999] [2022-01-10 17:53:43,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798739999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:43,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:43,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:53:43,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444477872] [2022-01-10 17:53:43,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:43,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:53:43,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:43,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:53:43,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:53:43,635 INFO L87 Difference]: Start difference. First operand 9119 states and 16984 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 17:53:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:44,232 INFO L93 Difference]: Finished difference Result 25608 states and 47701 transitions. [2022-01-10 17:53:44,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:53:44,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 17:53:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:44,270 INFO L225 Difference]: With dead ends: 25608 [2022-01-10 17:53:44,270 INFO L226 Difference]: Without dead ends: 16511 [2022-01-10 17:53:44,286 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 17:53:44,286 INFO L933 BasicCegarLoop]: 16232 mSDtfsCounter, 38950 mSDsluCounter, 19595 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38950 SdHoareTripleChecker+Valid, 35827 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:53:44,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38950 Valid, 35827 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:53:44,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16511 states. [2022-01-10 17:53:44,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16511 to 9117. [2022-01-10 17:53:44,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9117 states, 9112 states have (on average 1.8632572431957857) internal successors, (16978), 9116 states have internal predecessors, (16978), 0 states have call successors, (0), 0 states 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 17:53:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9117 states to 9117 states and 16978 transitions. [2022-01-10 17:53:44,692 INFO L78 Accepts]: Start accepts. Automaton has 9117 states and 16978 transitions. Word has length 58 [2022-01-10 17:53:44,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:44,692 INFO L470 AbstractCegarLoop]: Abstraction has 9117 states and 16978 transitions. [2022-01-10 17:53:44,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 17:53:44,692 INFO L276 IsEmpty]: Start isEmpty. Operand 9117 states and 16978 transitions. [2022-01-10 17:53:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 17:53:44,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:44,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:53:44,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:53:44,695 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 17:53:44,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1433666226, now seen corresponding path program 1 times [2022-01-10 17:53:44,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:44,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181738063] [2022-01-10 17:53:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:44,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:44,743 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 17:53:44,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:44,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181738063] [2022-01-10 17:53:44,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181738063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:44,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:44,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:53:44,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65256566] [2022-01-10 17:53:44,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:44,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:53:44,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:44,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:53:44,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:53:44,744 INFO L87 Difference]: Start difference. First operand 9117 states and 16978 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:53:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:45,369 INFO L93 Difference]: Finished difference Result 25574 states and 47632 transitions. [2022-01-10 17:53:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:53:45,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 17:53:45,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:45,408 INFO L225 Difference]: With dead ends: 25574 [2022-01-10 17:53:45,408 INFO L226 Difference]: Without dead ends: 16485 [2022-01-10 17:53:45,427 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 17:53:45,427 INFO L933 BasicCegarLoop]: 16214 mSDtfsCounter, 61672 mSDsluCounter, 19545 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61672 SdHoareTripleChecker+Valid, 35759 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:53:45,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61672 Valid, 35759 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:53:45,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16485 states. [2022-01-10 17:53:45,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16485 to 9121. [2022-01-10 17:53:45,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9121 states, 9116 states have (on average 1.8627687582272927) internal successors, (16981), 9120 states have internal predecessors, (16981), 0 states have call successors, (0), 0 states 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 17:53:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9121 states to 9121 states and 16981 transitions. [2022-01-10 17:53:45,771 INFO L78 Accepts]: Start accepts. Automaton has 9121 states and 16981 transitions. Word has length 59 [2022-01-10 17:53:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:45,771 INFO L470 AbstractCegarLoop]: Abstraction has 9121 states and 16981 transitions. [2022-01-10 17:53:45,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:53:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 9121 states and 16981 transitions. [2022-01-10 17:53:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 17:53:45,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:45,773 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] [2022-01-10 17:53:45,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:53:45,774 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 17:53:45,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1140310393, now seen corresponding path program 1 times [2022-01-10 17:53:45,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:45,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138689100] [2022-01-10 17:53:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:45,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:45,857 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 17:53:45,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:45,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138689100] [2022-01-10 17:53:45,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138689100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:45,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:45,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:53:45,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537694307] [2022-01-10 17:53:45,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:45,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:53:45,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:45,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:53:45,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:53:45,859 INFO L87 Difference]: Start difference. First operand 9121 states and 16981 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 17:53:49,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:49,462 INFO L93 Difference]: Finished difference Result 24596 states and 45781 transitions. [2022-01-10 17:53:49,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:53:49,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-10 17:53:49,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:49,491 INFO L225 Difference]: With dead ends: 24596 [2022-01-10 17:53:49,491 INFO L226 Difference]: Without dead ends: 15511 [2022-01-10 17:53:49,507 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 17:53:49,507 INFO L933 BasicCegarLoop]: 16303 mSDtfsCounter, 39653 mSDsluCounter, 11452 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39653 SdHoareTripleChecker+Valid, 27755 SdHoareTripleChecker+Invalid, 3825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 17:53:49,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39653 Valid, 27755 Invalid, 3825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 17:53:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15511 states. [2022-01-10 17:53:49,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15511 to 9121. [2022-01-10 17:53:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9121 states, 9116 states have (on average 1.8228389644580956) internal successors, (16617), 9120 states have internal predecessors, (16617), 0 states have call successors, (0), 0 states 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 17:53:49,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9121 states to 9121 states and 16617 transitions. [2022-01-10 17:53:49,867 INFO L78 Accepts]: Start accepts. Automaton has 9121 states and 16617 transitions. Word has length 60 [2022-01-10 17:53:49,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:49,867 INFO L470 AbstractCegarLoop]: Abstraction has 9121 states and 16617 transitions. [2022-01-10 17:53:49,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 17:53:49,867 INFO L276 IsEmpty]: Start isEmpty. Operand 9121 states and 16617 transitions. [2022-01-10 17:53:49,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 17:53:49,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:49,870 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 17:53:49,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:53:49,870 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 17:53:49,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:49,871 INFO L85 PathProgramCache]: Analyzing trace with hash 190891625, now seen corresponding path program 1 times [2022-01-10 17:53:49,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:49,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289279758] [2022-01-10 17:53:49,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:49,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:49,938 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 17:53:49,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:49,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289279758] [2022-01-10 17:53:49,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289279758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:49,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:49,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:53:49,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654749120] [2022-01-10 17:53:49,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:49,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:53:49,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:49,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:53:49,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:53:49,940 INFO L87 Difference]: Start difference. First operand 9121 states and 16617 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 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 17:54:02,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:02,677 INFO L93 Difference]: Finished difference Result 88499 states and 162983 transitions. [2022-01-10 17:54:02,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 17:54:02,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 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 17:54:02,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:02,810 INFO L225 Difference]: With dead ends: 88499 [2022-01-10 17:54:02,810 INFO L226 Difference]: Without dead ends: 79441 [2022-01-10 17:54:02,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-01-10 17:54:02,838 INFO L933 BasicCegarLoop]: 54506 mSDtfsCounter, 126122 mSDsluCounter, 205206 mSDsCounter, 0 mSdLazyCounter, 12261 mSolverCounterSat, 882 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126122 SdHoareTripleChecker+Valid, 259712 SdHoareTripleChecker+Invalid, 13143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 882 IncrementalHoareTripleChecker+Valid, 12261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:02,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126122 Valid, 259712 Invalid, 13143 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [882 Valid, 12261 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-01-10 17:54:02,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79441 states. [2022-01-10 17:54:03,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79441 to 17997. [2022-01-10 17:54:04,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17997 states, 17992 states have (on average 1.8235326811916408) internal successors, (32809), 17996 states have internal predecessors, (32809), 0 states have call successors, (0), 0 states 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 17:54:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17997 states to 17997 states and 32809 transitions. [2022-01-10 17:54:04,045 INFO L78 Accepts]: Start accepts. Automaton has 17997 states and 32809 transitions. Word has length 72 [2022-01-10 17:54:04,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:04,046 INFO L470 AbstractCegarLoop]: Abstraction has 17997 states and 32809 transitions. [2022-01-10 17:54:04,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 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 17:54:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand 17997 states and 32809 transitions. [2022-01-10 17:54:04,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 17:54:04,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:04,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:04,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 17:54:04,050 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 17:54:04,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:04,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1988200763, now seen corresponding path program 1 times [2022-01-10 17:54:04,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:04,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764258341] [2022-01-10 17:54:04,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:04,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:04,114 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 17:54:04,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:04,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764258341] [2022-01-10 17:54:04,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764258341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:04,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:04,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:04,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372996299] [2022-01-10 17:54:04,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:04,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:54:04,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:04,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:54:04,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:54:04,115 INFO L87 Difference]: Start difference. First operand 17997 states and 32809 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 17:54:14,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:14,630 INFO L93 Difference]: Finished difference Result 93730 states and 172955 transitions. [2022-01-10 17:54:14,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 17:54:14,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-10 17:54:14,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:14,749 INFO L225 Difference]: With dead ends: 93730 [2022-01-10 17:54:14,749 INFO L226 Difference]: Without dead ends: 78419 [2022-01-10 17:54:14,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-01-10 17:54:14,773 INFO L933 BasicCegarLoop]: 63408 mSDtfsCounter, 100894 mSDsluCounter, 188564 mSDsCounter, 0 mSdLazyCounter, 8320 mSolverCounterSat, 857 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100894 SdHoareTripleChecker+Valid, 251972 SdHoareTripleChecker+Invalid, 9177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 857 IncrementalHoareTripleChecker+Valid, 8320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:14,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100894 Valid, 251972 Invalid, 9177 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [857 Valid, 8320 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-01-10 17:54:14,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78419 states. [2022-01-10 17:54:15,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78419 to 18017. [2022-01-10 17:54:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18017 states, 18012 states have (on average 1.8220630690650677) internal successors, (32819), 18016 states have internal predecessors, (32819), 0 states have call successors, (0), 0 states 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 17:54:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18017 states to 18017 states and 32819 transitions. [2022-01-10 17:54:15,995 INFO L78 Accepts]: Start accepts. Automaton has 18017 states and 32819 transitions. Word has length 75 [2022-01-10 17:54:15,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:15,995 INFO L470 AbstractCegarLoop]: Abstraction has 18017 states and 32819 transitions. [2022-01-10 17:54:15,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 17:54:15,996 INFO L276 IsEmpty]: Start isEmpty. Operand 18017 states and 32819 transitions. [2022-01-10 17:54:15,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 17:54:15,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:15,999 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] [2022-01-10 17:54:15,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 17:54:15,999 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:15,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:16,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1877258855, now seen corresponding path program 1 times [2022-01-10 17:54:16,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:16,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986253449] [2022-01-10 17:54:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:16,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:16,051 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 17:54:16,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:16,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986253449] [2022-01-10 17:54:16,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986253449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:16,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:16,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:16,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175222866] [2022-01-10 17:54:16,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:16,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:16,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:16,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:16,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:16,052 INFO L87 Difference]: Start difference. First operand 18017 states and 32819 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 17:54:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:17,486 INFO L93 Difference]: Finished difference Result 41280 states and 75191 transitions. [2022-01-10 17:54:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:54:17,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-10 17:54:17,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:17,521 INFO L225 Difference]: With dead ends: 41280 [2022-01-10 17:54:17,521 INFO L226 Difference]: Without dead ends: 23288 [2022-01-10 17:54:17,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:54:17,536 INFO L933 BasicCegarLoop]: 19708 mSDtfsCounter, 71919 mSDsluCounter, 23032 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71919 SdHoareTripleChecker+Valid, 42740 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:17,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71919 Valid, 42740 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:17,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23288 states. [2022-01-10 17:54:18,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23288 to 12578. [2022-01-10 17:54:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12578 states, 12573 states have (on average 1.8210450966356477) internal successors, (22896), 12577 states have internal predecessors, (22896), 0 states have call successors, (0), 0 states 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 17:54:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12578 states to 12578 states and 22896 transitions. [2022-01-10 17:54:18,418 INFO L78 Accepts]: Start accepts. Automaton has 12578 states and 22896 transitions. Word has length 75 [2022-01-10 17:54:18,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:18,418 INFO L470 AbstractCegarLoop]: Abstraction has 12578 states and 22896 transitions. [2022-01-10 17:54:18,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 17:54:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 12578 states and 22896 transitions. [2022-01-10 17:54:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 17:54:18,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:18,421 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] [2022-01-10 17:54:18,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 17:54:18,421 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:18,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:18,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1043459955, now seen corresponding path program 1 times [2022-01-10 17:54:18,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:18,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066801780] [2022-01-10 17:54:18,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:18,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:18,467 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 17:54:18,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:18,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066801780] [2022-01-10 17:54:18,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066801780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:18,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:18,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:54:18,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600177592] [2022-01-10 17:54:18,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:18,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:18,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:18,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:18,468 INFO L87 Difference]: Start difference. First operand 12578 states and 22896 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 17:54:19,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:19,862 INFO L93 Difference]: Finished difference Result 35449 states and 64569 transitions. [2022-01-10 17:54:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:19,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-10 17:54:19,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:19,890 INFO L225 Difference]: With dead ends: 35449 [2022-01-10 17:54:19,891 INFO L226 Difference]: Without dead ends: 23817 [2022-01-10 17:54:19,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:19,900 INFO L933 BasicCegarLoop]: 16506 mSDtfsCounter, 15606 mSDsluCounter, 13482 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15606 SdHoareTripleChecker+Valid, 29988 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:19,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15606 Valid, 29988 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 17:54:19,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23817 states. [2022-01-10 17:54:21,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23817 to 23807. [2022-01-10 17:54:21,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23807 states, 23802 states have (on average 1.8186286866649861) internal successors, (43287), 23806 states have internal predecessors, (43287), 0 states have call successors, (0), 0 states 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 17:54:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23807 states to 23807 states and 43287 transitions. [2022-01-10 17:54:21,161 INFO L78 Accepts]: Start accepts. Automaton has 23807 states and 43287 transitions. Word has length 81 [2022-01-10 17:54:21,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:21,162 INFO L470 AbstractCegarLoop]: Abstraction has 23807 states and 43287 transitions. [2022-01-10 17:54:21,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 17:54:21,162 INFO L276 IsEmpty]: Start isEmpty. Operand 23807 states and 43287 transitions. [2022-01-10 17:54:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 17:54:21,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:21,164 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 17:54:21,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 17:54:21,164 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:21,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:21,165 INFO L85 PathProgramCache]: Analyzing trace with hash 245597991, now seen corresponding path program 1 times [2022-01-10 17:54:21,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:21,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065907014] [2022-01-10 17:54:21,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:21,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:21,210 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 17:54:21,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:21,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065907014] [2022-01-10 17:54:21,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065907014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:21,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:21,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:54:21,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809340400] [2022-01-10 17:54:21,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:21,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:21,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:21,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:21,211 INFO L87 Difference]: Start difference. First operand 23807 states and 43287 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 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)