/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_BITWISE.epf -i ../../../trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:24:48,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:24:48,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:24:48,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 09:24:48,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:24:48,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:24:48,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:24:48,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:24:48,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:24:48,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:24:48,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:24:48,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:24:48,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:24:48,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:24:48,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:24:48,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:24:48,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 09:24:48,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 09:24:48,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 09:24:48,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 09:24:48,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 09:24:48,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 09:24:48,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 09:24:48,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 09:24:48,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 09:24:48,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:24:48,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:24:48,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:24:48,368 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 09:24:48,393 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:24:48,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:24:48,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:24:48,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:24:48,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:24:48,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:24:48,394 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:24:48,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:24:48,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:24:48,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:24:48,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:24:48,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:24:48,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:24:48,396 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:24:48,396 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:24:48,396 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:24:48,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:24:48,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:24:48,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:24:48,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:24:48,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:24:48,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:24:48,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:24:48,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:24:48,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:24:48,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:24:48,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:24:48,397 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:24:48,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:24:48,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:24:48,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:24:48,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:24:48,398 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:24:48,398 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:24:48,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:24:48,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:24:48,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:24:48,565 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:24:48,572 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:24:48,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-2.i [2022-01-10 09:24:48,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4187acf/30416d5070c24c8e86345fa86e3a439c/FLAG039c257e5 [2022-01-10 09:24:48,994 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:24:48,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-2.i [2022-01-10 09:24:48,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4187acf/30416d5070c24c8e86345fa86e3a439c/FLAG039c257e5 [2022-01-10 09:24:49,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4187acf/30416d5070c24c8e86345fa86e3a439c [2022-01-10 09:24:49,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:24:49,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:24:49,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:24:49,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:24:49,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:24:49,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:24:49" (1/1) ... [2022-01-10 09:24:49,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c90708d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:49, skipping insertion in model container [2022-01-10 09:24:49,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:24:49" (1/1) ... [2022-01-10 09:24:49,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:24:49,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:24:49,198 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-2.i[823,836] [2022-01-10 09:24:49,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:24:49,228 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:24:49,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-2.i[823,836] [2022-01-10 09:24:49,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:24:49,253 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:24:49,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:49 WrapperNode [2022-01-10 09:24:49,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:24:49,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:24:49,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:24:49,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:24:49,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:49" (1/1) ... [2022-01-10 09:24:49,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:49" (1/1) ... [2022-01-10 09:24:49,291 INFO L137 Inliner]: procedures = 18, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2022-01-10 09:24:49,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:24:49,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:24:49,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:24:49,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:24:49,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:49" (1/1) ... [2022-01-10 09:24:49,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:49" (1/1) ... [2022-01-10 09:24:49,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:49" (1/1) ... [2022-01-10 09:24:49,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:49" (1/1) ... [2022-01-10 09:24:49,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:49" (1/1) ... [2022-01-10 09:24:49,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:49" (1/1) ... [2022-01-10 09:24:49,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:49" (1/1) ... [2022-01-10 09:24:49,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:24:49,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:24:49,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:24:49,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:24:49,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:49" (1/1) ... [2022-01-10 09:24:49,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:24:49,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:24:49,357 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 09:24:49,380 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 09:24:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:24:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:24:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 09:24:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 09:24:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:24:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:24:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 09:24:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 09:24:49,464 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:24:49,465 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:24:49,596 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:24:49,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:24:49,600 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 09:24:49,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:24:49 BoogieIcfgContainer [2022-01-10 09:24:49,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:24:49,602 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:24:49,602 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:24:49,603 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:24:49,605 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:24:49" (1/1) ... [2022-01-10 09:24:49,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:24:49 BasicIcfg [2022-01-10 09:24:49,717 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:24:49,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:24:49,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:24:49,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:24:49,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:24:49" (1/4) ... [2022-01-10 09:24:49,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a9c878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:24:49, skipping insertion in model container [2022-01-10 09:24:49,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:49" (2/4) ... [2022-01-10 09:24:49,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a9c878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:24:49, skipping insertion in model container [2022-01-10 09:24:49,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:24:49" (3/4) ... [2022-01-10 09:24:49,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a9c878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:24:49, skipping insertion in model container [2022-01-10 09:24:49,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:24:49" (4/4) ... [2022-01-10 09:24:49,722 INFO L111 eAbstractionObserver]: Analyzing ICFG sorting_selectionsort_ground-2.iTransformedIcfg [2022-01-10 09:24:49,725 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:24:49,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 09:24:49,756 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:24:49,761 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 09:24:49,761 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 09:24:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 39 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 09:24:49,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 09:24:49,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:49,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:49,773 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:49,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:49,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1176236106, now seen corresponding path program 1 times [2022-01-10 09:24:49,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:49,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892572427] [2022-01-10 09:24:49,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:49,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:49,917 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 09:24:49,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:49,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892572427] [2022-01-10 09:24:49,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892572427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:24:49,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:24:49,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 09:24:49,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079079947] [2022-01-10 09:24:49,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:24:49,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 09:24:49,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:49,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 09:24:49,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:24:49,953 INFO L87 Difference]: Start difference. First operand has 40 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 39 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 09:24:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:49,976 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2022-01-10 09:24:49,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 09:24:49,977 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-01-10 09:24:49,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:49,983 INFO L225 Difference]: With dead ends: 76 [2022-01-10 09:24:49,983 INFO L226 Difference]: Without dead ends: 36 [2022-01-10 09:24:49,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:24:49,987 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:49,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:24:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-10 09:24:50,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-01-10 09:24:50,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 35 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 09:24:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-01-10 09:24:50,011 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 10 [2022-01-10 09:24:50,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:50,011 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-01-10 09:24:50,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 09:24:50,013 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-01-10 09:24:50,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 09:24:50,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:50,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:50,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 09:24:50,014 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:50,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:50,014 INFO L85 PathProgramCache]: Analyzing trace with hash 595203380, now seen corresponding path program 1 times [2022-01-10 09:24:50,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:50,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45585150] [2022-01-10 09:24:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:50,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:50,072 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 09:24:50,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:50,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45585150] [2022-01-10 09:24:50,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45585150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:24:50,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:24:50,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 09:24:50,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205961582] [2022-01-10 09:24:50,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:24:50,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 09:24:50,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:50,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 09:24:50,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 09:24:50,075 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 09:24:50,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:50,087 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2022-01-10 09:24:50,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 09:24:50,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-01-10 09:24:50,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:50,089 INFO L225 Difference]: With dead ends: 70 [2022-01-10 09:24:50,089 INFO L226 Difference]: Without dead ends: 38 [2022-01-10 09:24:50,089 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 09:24:50,090 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 1 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:50,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 84 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:24:50,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-10 09:24:50,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-01-10 09:24:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 36 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 09:24:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-01-10 09:24:50,095 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 10 [2022-01-10 09:24:50,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:50,095 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-01-10 09:24:50,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 09:24:50,095 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-01-10 09:24:50,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 09:24:50,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:50,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:50,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 09:24:50,096 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:50,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:50,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1753192810, now seen corresponding path program 1 times [2022-01-10 09:24:50,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:50,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195966825] [2022-01-10 09:24:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:50,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:24:50,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:50,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195966825] [2022-01-10 09:24:50,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195966825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:24:50,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:24:50,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 09:24:50,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395544493] [2022-01-10 09:24:50,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:24:50,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 09:24:50,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:50,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 09:24:50,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 09:24:50,168 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states 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 09:24:50,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:50,233 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2022-01-10 09:24:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 09:24:50,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-01-10 09:24:50,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:50,234 INFO L225 Difference]: With dead ends: 68 [2022-01-10 09:24:50,234 INFO L226 Difference]: Without dead ends: 59 [2022-01-10 09:24:50,234 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 09:24:50,235 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 30 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:50,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 64 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 09:24:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-10 09:24:50,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 38. [2022-01-10 09:24:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 09:24:50,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-01-10 09:24:50,240 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 12 [2022-01-10 09:24:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:50,240 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-01-10 09:24:50,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states 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 09:24:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-01-10 09:24:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 09:24:50,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:50,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:50,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 09:24:50,242 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:50,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:50,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1938575906, now seen corresponding path program 1 times [2022-01-10 09:24:50,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:50,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538961246] [2022-01-10 09:24:50,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:50,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:24:50,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:50,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538961246] [2022-01-10 09:24:50,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538961246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:24:50,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:24:50,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 09:24:50,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461140508] [2022-01-10 09:24:50,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:24:50,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 09:24:50,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:50,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 09:24:50,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 09:24:50,291 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 09:24:50,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:50,335 INFO L93 Difference]: Finished difference Result 90 states and 113 transitions. [2022-01-10 09:24:50,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 09:24:50,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-01-10 09:24:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:50,336 INFO L225 Difference]: With dead ends: 90 [2022-01-10 09:24:50,336 INFO L226 Difference]: Without dead ends: 59 [2022-01-10 09:24:50,337 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 09:24:50,337 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 23 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:50,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 67 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:24:50,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-10 09:24:50,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2022-01-10 09:24:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.358974358974359) internal successors, (53), 41 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 09:24:50,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2022-01-10 09:24:50,342 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 14 [2022-01-10 09:24:50,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:50,342 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2022-01-10 09:24:50,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 09:24:50,342 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2022-01-10 09:24:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 09:24:50,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:50,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:50,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 09:24:50,343 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:50,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:50,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1909946755, now seen corresponding path program 1 times [2022-01-10 09:24:50,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:50,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27648908] [2022-01-10 09:24:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:50,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:24:50,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:50,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27648908] [2022-01-10 09:24:50,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27648908] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:24:50,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411260196] [2022-01-10 09:24:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:50,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:50,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:24:50,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:24:50,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 09:24:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:50,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 09:24:50,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:24:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:24:50,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:24:50,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411260196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:24:50,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 09:24:50,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-01-10 09:24:50,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758442527] [2022-01-10 09:24:50,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:24:50,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 09:24:50,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:50,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 09:24:50,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 09:24:50,594 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 09:24:50,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:50,682 INFO L93 Difference]: Finished difference Result 101 states and 130 transitions. [2022-01-10 09:24:50,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 09:24:50,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-01-10 09:24:50,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:50,683 INFO L225 Difference]: With dead ends: 101 [2022-01-10 09:24:50,684 INFO L226 Difference]: Without dead ends: 66 [2022-01-10 09:24:50,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 09:24:50,685 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 22 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:50,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 90 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 09:24:50,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-10 09:24:50,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2022-01-10 09:24:50,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 53 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2022-01-10 09:24:50,689 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 14 [2022-01-10 09:24:50,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:50,690 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2022-01-10 09:24:50,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 09:24:50,690 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2022-01-10 09:24:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 09:24:50,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:50,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:50,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 09:24:50,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:50,891 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:50,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:50,892 INFO L85 PathProgramCache]: Analyzing trace with hash 920178071, now seen corresponding path program 1 times [2022-01-10 09:24:50,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:50,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564899867] [2022-01-10 09:24:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:50,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:24:50,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:50,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564899867] [2022-01-10 09:24:50,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564899867] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:24:50,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98407930] [2022-01-10 09:24:50,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:50,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:50,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:24:50,992 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:24:51,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 09:24:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:51,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 09:24:51,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:24:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:24:51,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:24:51,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:24:51,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98407930] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:24:51,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 09:24:51,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 09:24:51,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18675861] [2022-01-10 09:24:51,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 09:24:51,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 09:24:51,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:51,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 09:24:51,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 09:24:51,262 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 09:24:51,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:51,313 INFO L93 Difference]: Finished difference Result 109 states and 143 transitions. [2022-01-10 09:24:51,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 09:24:51,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 15 [2022-01-10 09:24:51,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:51,316 INFO L225 Difference]: With dead ends: 109 [2022-01-10 09:24:51,316 INFO L226 Difference]: Without dead ends: 60 [2022-01-10 09:24:51,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 09:24:51,317 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 5 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:51,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 166 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:24:51,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-10 09:24:51,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-01-10 09:24:51,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 59 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2022-01-10 09:24:51,321 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 15 [2022-01-10 09:24:51,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:51,321 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2022-01-10 09:24:51,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 09:24:51,322 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2022-01-10 09:24:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 09:24:51,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:51,322 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:51,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 09:24:51,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-10 09:24:51,523 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:51,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:51,523 INFO L85 PathProgramCache]: Analyzing trace with hash -962993487, now seen corresponding path program 2 times [2022-01-10 09:24:51,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:51,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360928532] [2022-01-10 09:24:51,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:51,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 09:24:51,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:51,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360928532] [2022-01-10 09:24:51,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360928532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:24:51,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:24:51,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 09:24:51,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919561177] [2022-01-10 09:24:51,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:24:51,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 09:24:51,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:51,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 09:24:51,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 09:24:51,637 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states 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 09:24:51,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:51,695 INFO L93 Difference]: Finished difference Result 111 states and 140 transitions. [2022-01-10 09:24:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 09:24:51,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 21 [2022-01-10 09:24:51,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:51,697 INFO L225 Difference]: With dead ends: 111 [2022-01-10 09:24:51,697 INFO L226 Difference]: Without dead ends: 71 [2022-01-10 09:24:51,698 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 09:24:51,698 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 27 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:51,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 92 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:24:51,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-01-10 09:24:51,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2022-01-10 09:24:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 60 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2022-01-10 09:24:51,709 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 21 [2022-01-10 09:24:51,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:51,709 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2022-01-10 09:24:51,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states 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 09:24:51,710 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2022-01-10 09:24:51,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 09:24:51,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:51,710 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:51,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 09:24:51,710 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:51,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:51,711 INFO L85 PathProgramCache]: Analyzing trace with hash -207076497, now seen corresponding path program 1 times [2022-01-10 09:24:51,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:51,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466230464] [2022-01-10 09:24:51,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:51,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:51,835 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 09:24:51,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:51,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466230464] [2022-01-10 09:24:51,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466230464] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:24:51,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69345389] [2022-01-10 09:24:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:51,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:51,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:24:51,838 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:24:51,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 09:24:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:51,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 09:24:51,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:24:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 09:24:58,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:24:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 09:24:58,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69345389] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:24:58,512 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 09:24:58,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 13 [2022-01-10 09:24:58,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240501789] [2022-01-10 09:24:58,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 09:24:58,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 09:24:58,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:58,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 09:24:58,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=121, Unknown=3, NotChecked=0, Total=156 [2022-01-10 09:24:58,513 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 09:25:08,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:25:08,909 INFO L93 Difference]: Finished difference Result 113 states and 147 transitions. [2022-01-10 09:25:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 09:25:08,910 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 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 24 [2022-01-10 09:25:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:25:08,911 INFO L225 Difference]: With dead ends: 113 [2022-01-10 09:25:08,911 INFO L226 Difference]: Without dead ends: 72 [2022-01-10 09:25:08,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=64, Invalid=235, Unknown=7, NotChecked=0, Total=306 [2022-01-10 09:25:08,912 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 16 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 09:25:08,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 360 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 28 Unchecked, 0.3s Time] [2022-01-10 09:25:08,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-10 09:25:08,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-01-10 09:25:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 69 states have (on average 1.318840579710145) internal successors, (91), 71 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 09:25:08,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2022-01-10 09:25:08,917 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 24 [2022-01-10 09:25:08,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:25:08,918 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2022-01-10 09:25:08,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 09:25:08,918 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2022-01-10 09:25:08,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 09:25:08,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:25:08,919 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:25:08,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 09:25:09,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:25:09,120 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:25:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:25:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1447498703, now seen corresponding path program 2 times [2022-01-10 09:25:09,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:25:09,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190902627] [2022-01-10 09:25:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:25:09,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:25:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:25:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 09:25:09,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:25:09,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190902627] [2022-01-10 09:25:09,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190902627] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:25:09,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305200037] [2022-01-10 09:25:09,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 09:25:09,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:25:09,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:25:09,296 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:25:09,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 09:25:09,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 09:25:09,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 09:25:09,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 09:25:09,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:25:09,563 INFO L353 Elim1Store]: treesize reduction 61, result has 49.2 percent of original size [2022-01-10 09:25:09,564 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 83 [2022-01-10 09:25:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 09:25:09,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:25:09,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305200037] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:25:09,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 09:25:09,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-01-10 09:25:09,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609162878] [2022-01-10 09:25:09,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:25:09,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 09:25:09,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:25:09,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 09:25:09,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-10 09:25:09,653 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 09:25:09,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:25:09,757 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2022-01-10 09:25:09,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 09:25:09,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 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 30 [2022-01-10 09:25:09,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:25:09,758 INFO L225 Difference]: With dead ends: 84 [2022-01-10 09:25:09,758 INFO L226 Difference]: Without dead ends: 82 [2022-01-10 09:25:09,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-10 09:25:09,759 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 93 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:25:09,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 92 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 09:25:09,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-10 09:25:09,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2022-01-10 09:25:09,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 70 states have (on average 1.3142857142857143) internal successors, (92), 72 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 09:25:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions. [2022-01-10 09:25:09,763 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 30 [2022-01-10 09:25:09,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:25:09,764 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions. [2022-01-10 09:25:09,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 09:25:09,764 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions. [2022-01-10 09:25:09,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 09:25:09,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:25:09,764 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:25:09,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-10 09:25:09,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:25:09,968 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:25:09,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:25:09,968 INFO L85 PathProgramCache]: Analyzing trace with hash -199234617, now seen corresponding path program 1 times [2022-01-10 09:25:09,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:25:09,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659813644] [2022-01-10 09:25:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:25:09,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:25:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:25:10,125 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 09:25:10,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:25:10,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659813644] [2022-01-10 09:25:10,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659813644] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:25:10,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597110363] [2022-01-10 09:25:10,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:25:10,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:25:10,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:25:10,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:25:10,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 09:25:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:25:10,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-10 09:25:10,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:25:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 09:25:10,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:25:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 09:25:16,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597110363] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:25:16,991 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 09:25:16,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 11] total 20 [2022-01-10 09:25:16,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301924078] [2022-01-10 09:25:16,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 09:25:16,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-10 09:25:16,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:25:16,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-10 09:25:16,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=297, Unknown=1, NotChecked=0, Total=380 [2022-01-10 09:25:16,994 INFO L87 Difference]: Start difference. First operand 73 states and 92 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 09:25:27,047 WARN L228 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 42 DAG size of output: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 09:25:38,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:25:38,063 INFO L93 Difference]: Finished difference Result 169 states and 215 transitions. [2022-01-10 09:25:38,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 09:25:38,064 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 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 34 [2022-01-10 09:25:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:25:38,065 INFO L225 Difference]: With dead ends: 169 [2022-01-10 09:25:38,065 INFO L226 Difference]: Without dead ends: 107 [2022-01-10 09:25:38,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=128, Invalid=421, Unknown=3, NotChecked=0, Total=552 [2022-01-10 09:25:38,065 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 37 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 09:25:38,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 451 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 09:25:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-01-10 09:25:38,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 85. [2022-01-10 09:25:38,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 84 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:25:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2022-01-10 09:25:38,071 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 34 [2022-01-10 09:25:38,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:25:38,071 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2022-01-10 09:25:38,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 09:25:38,071 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2022-01-10 09:25:38,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 09:25:38,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:25:38,072 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:25:38,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 09:25:38,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 09:25:38,273 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:25:38,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:25:38,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1862760595, now seen corresponding path program 2 times [2022-01-10 09:25:38,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:25:38,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683875065] [2022-01-10 09:25:38,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:25:38,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:25:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:25:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-01-10 09:25:38,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:25:38,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683875065] [2022-01-10 09:25:38,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683875065] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:25:38,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394520822] [2022-01-10 09:25:38,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 09:25:38,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:25:38,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:25:38,428 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:25:38,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 09:25:38,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 09:25:38,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 09:25:38,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 09:25:38,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:25:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 09:25:40,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:25:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-01-10 09:25:41,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394520822] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:25:41,025 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 09:25:41,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 8] total 24 [2022-01-10 09:25:41,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714369031] [2022-01-10 09:25:41,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 09:25:41,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 09:25:41,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:25:41,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 09:25:41,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2022-01-10 09:25:41,028 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand has 24 states, 24 states have (on average 2.625) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:25:57,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:25:57,470 INFO L93 Difference]: Finished difference Result 219 states and 293 transitions. [2022-01-10 09:25:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-10 09:25:57,472 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-10 09:25:57,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:25:57,473 INFO L225 Difference]: With dead ends: 219 [2022-01-10 09:25:57,473 INFO L226 Difference]: Without dead ends: 175 [2022-01-10 09:25:57,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=289, Invalid=1192, Unknown=1, NotChecked=0, Total=1482 [2022-01-10 09:25:57,474 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 167 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 09:25:57,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 417 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 325 Invalid, 0 Unknown, 131 Unchecked, 1.3s Time] [2022-01-10 09:25:57,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-01-10 09:25:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 139. [2022-01-10 09:25:57,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 136 states have (on average 1.2941176470588236) internal successors, (176), 138 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 09:25:57,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 176 transitions. [2022-01-10 09:25:57,483 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 176 transitions. Word has length 46 [2022-01-10 09:25:57,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:25:57,483 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 176 transitions. [2022-01-10 09:25:57,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:25:57,483 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 176 transitions. [2022-01-10 09:25:57,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 09:25:57,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:25:57,484 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:25:57,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-10 09:25:57,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:25:57,700 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:25:57,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:25:57,700 INFO L85 PathProgramCache]: Analyzing trace with hash -535484644, now seen corresponding path program 3 times [2022-01-10 09:25:57,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:25:57,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377728838] [2022-01-10 09:25:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:25:57,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:25:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:25:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-01-10 09:25:58,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:25:58,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377728838] [2022-01-10 09:25:58,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377728838] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:25:58,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880763263] [2022-01-10 09:25:58,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 09:25:58,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:25:58,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:25:58,032 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:25:58,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process