/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:10:34,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:10:34,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:10:34,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:10:34,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:10:34,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:10:34,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:10:34,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:10:34,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:10:34,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:10:34,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:10:34,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:10:34,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:10:34,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:10:34,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:10:34,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:10:34,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:10:34,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:10:34,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:10:34,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:10:34,209 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:10:34,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:10:34,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:10:34,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:10:34,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:10:34,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:10:34,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:10:34,246 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:10:34,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:10:34,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:10:34,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:10:34,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:10:34,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:10:34,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:10:34,247 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:10:34,247 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:10:34,247 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:10:34,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:10:34,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:10:34,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:10:34,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:10:34,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:10:34,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:10:34,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:10:34,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:10:34,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:10:34,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:10:34,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:10:34,249 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:10:34,249 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:10:34,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:10:34,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:10:34,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:10:34,251 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:10:34,251 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:10:34,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:10:34,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:10:34,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:10:34,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:10:34,473 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:10:34,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-1.c [2022-01-11 00:10:34,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09acee49e/711eb027e1774324a5a8dc68c9ae7885/FLAG369a38164 [2022-01-11 00:10:34,922 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:10:34,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_10-1.c [2022-01-11 00:10:34,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09acee49e/711eb027e1774324a5a8dc68c9ae7885/FLAG369a38164 [2022-01-11 00:10:34,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09acee49e/711eb027e1774324a5a8dc68c9ae7885 [2022-01-11 00:10:34,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:10:34,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:10:34,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:10:34,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:10:34,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:10:34,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:10:34" (1/1) ... [2022-01-11 00:10:34,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e6ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:34, skipping insertion in model container [2022-01-11 00:10:34,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:10:34" (1/1) ... [2022-01-11 00:10:34,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:10:34,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:10:35,106 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_10-1.c[743,756] [2022-01-11 00:10:35,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:10:35,125 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:10:35,140 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_10-1.c[743,756] [2022-01-11 00:10:35,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:10:35,155 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:10:35,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35 WrapperNode [2022-01-11 00:10:35,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:10:35,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:10:35,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:10:35,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:10:35,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,182 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-01-11 00:10:35,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:10:35,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:10:35,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:10:35,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:10:35,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:10:35,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:10:35,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:10:35,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:10:35,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:10:35,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:35,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:10:35,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:10:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:10:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:10:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:10:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:10:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-01-11 00:10:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-01-11 00:10:35,323 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:10:35,324 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:10:35,418 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:10:35,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:10:35,423 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:10:35,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:10:35 BoogieIcfgContainer [2022-01-11 00:10:35,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:10:35,425 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:10:35,425 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:10:35,426 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:10:35,429 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:10:35" (1/1) ... [2022-01-11 00:10:35,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:10:35 BasicIcfg [2022-01-11 00:10:35,504 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:10:35,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:10:35,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:10:35,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:10:35,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:10:34" (1/4) ... [2022-01-11 00:10:35,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5d844e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:10:35, skipping insertion in model container [2022-01-11 00:10:35,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:35" (2/4) ... [2022-01-11 00:10:35,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5d844e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:10:35, skipping insertion in model container [2022-01-11 00:10:35,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:10:35" (3/4) ... [2022-01-11 00:10:35,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5d844e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:10:35, skipping insertion in model container [2022-01-11 00:10:35,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:10:35" (4/4) ... [2022-01-11 00:10:35,526 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_10-1.cTransformedIcfg [2022-01-11 00:10:35,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:10:35,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:10:35,587 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:10:35,597 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:10:35,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:10:35,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-11 00:10:35,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 00:10:35,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:35,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:35,611 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:35,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:35,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2142902620, now seen corresponding path program 1 times [2022-01-11 00:10:35,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:35,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867800954] [2022-01-11 00:10:35,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:35,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:35,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:10:35,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:35,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867800954] [2022-01-11 00:10:35,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867800954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:10:35,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:10:35,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:10:35,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790588971] [2022-01-11 00:10:35,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:10:35,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:10:35,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:35,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:10:35,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:10:35,823 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:10:35,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:35,854 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-01-11 00:10:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:10:35,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-01-11 00:10:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:35,861 INFO L225 Difference]: With dead ends: 33 [2022-01-11 00:10:35,862 INFO L226 Difference]: Without dead ends: 17 [2022-01-11 00:10:35,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:10:35,867 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:35,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 74 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:10:35,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-11 00:10:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-11 00:10:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-11 00:10:35,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-01-11 00:10:35,898 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2022-01-11 00:10:35,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:35,898 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-01-11 00:10:35,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:10:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-01-11 00:10:35,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 00:10:35,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:35,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:35,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:10:35,900 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:35,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:35,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1380246405, now seen corresponding path program 1 times [2022-01-11 00:10:35,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:35,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34586015] [2022-01-11 00:10:35,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:35,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:35,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:10:36,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:36,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34586015] [2022-01-11 00:10:36,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34586015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:10:36,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:10:36,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:10:36,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531272058] [2022-01-11 00:10:36,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:10:36,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:10:36,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:36,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:10:36,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:10:36,003 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:10:36,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:36,055 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2022-01-11 00:10:36,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:10:36,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-11 00:10:36,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:36,056 INFO L225 Difference]: With dead ends: 23 [2022-01-11 00:10:36,057 INFO L226 Difference]: Without dead ends: 19 [2022-01-11 00:10:36,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:10:36,058 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:36,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 30 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:10:36,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-11 00:10:36,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-01-11 00:10:36,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-11 00:10:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-01-11 00:10:36,070 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2022-01-11 00:10:36,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:36,074 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-01-11 00:10:36,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:10:36,075 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-01-11 00:10:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 00:10:36,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:36,076 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:36,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:10:36,076 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:36,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:36,077 INFO L85 PathProgramCache]: Analyzing trace with hash -794894887, now seen corresponding path program 1 times [2022-01-11 00:10:36,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:36,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898461777] [2022-01-11 00:10:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:36,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:10:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 00:10:36,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:36,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898461777] [2022-01-11 00:10:36,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898461777] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:10:36,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491502763] [2022-01-11 00:10:36,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:36,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:36,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:36,471 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) [2022-01-11 00:10:36,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 00:10:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:36,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 00:10:36,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:10:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-11 00:10:36,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 00:10:36,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491502763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:10:36,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 00:10:36,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-01-11 00:10:36,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176907297] [2022-01-11 00:10:36,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:10:36,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:10:36,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:36,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:10:36,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-01-11 00:10:36,703 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 00:10:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:36,742 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2022-01-11 00:10:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:10:36,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-01-11 00:10:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:36,744 INFO L225 Difference]: With dead ends: 28 [2022-01-11 00:10:36,744 INFO L226 Difference]: Without dead ends: 24 [2022-01-11 00:10:36,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-01-11 00:10:36,748 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:36,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 93 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:10:36,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-11 00:10:36,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2022-01-11 00:10:36,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2022-01-11 00:10:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2022-01-11 00:10:36,762 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 22 [2022-01-11 00:10:36,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:36,762 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2022-01-11 00:10:36,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 00:10:36,762 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2022-01-11 00:10:36,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-11 00:10:36,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:36,764 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:36,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 00:10:36,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:36,988 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:36,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1731891524, now seen corresponding path program 1 times [2022-01-11 00:10:36,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:36,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478400295] [2022-01-11 00:10:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:36,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:37,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:37,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:37,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:10:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 00:10:37,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:37,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478400295] [2022-01-11 00:10:37,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478400295] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:10:37,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703978022] [2022-01-11 00:10:37,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:37,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:37,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:37,178 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) [2022-01-11 00:10:37,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 00:10:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:37,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-11 00:10:37,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:10:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-11 00:10:37,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:10:37,960 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 00:10:37,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703978022] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:10:37,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:10:37,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2022-01-11 00:10:37,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791332680] [2022-01-11 00:10:37,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:10:37,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-11 00:10:37,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-11 00:10:37,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-11 00:10:37,967 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand has 12 states, 10 states have (on average 2.8) internal successors, (28), 12 states have internal predecessors, (28), 5 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-01-11 00:10:38,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:38,183 INFO L93 Difference]: Finished difference Result 46 states and 77 transitions. [2022-01-11 00:10:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:10:38,184 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.8) internal successors, (28), 12 states have internal predecessors, (28), 5 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 23 [2022-01-11 00:10:38,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:38,185 INFO L225 Difference]: With dead ends: 46 [2022-01-11 00:10:38,186 INFO L226 Difference]: Without dead ends: 28 [2022-01-11 00:10:38,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-01-11 00:10:38,187 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:38,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 63 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:10:38,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-11 00:10:38,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-01-11 00:10:38,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (20), 8 states have call predecessors, (20), 5 states have call successors, (20) [2022-01-11 00:10:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 44 transitions. [2022-01-11 00:10:38,194 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 44 transitions. Word has length 23 [2022-01-11 00:10:38,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:38,195 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 44 transitions. [2022-01-11 00:10:38,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.8) internal successors, (28), 12 states have internal predecessors, (28), 5 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-01-11 00:10:38,195 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2022-01-11 00:10:38,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-11 00:10:38,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:38,197 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:38,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 00:10:38,397 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,SelfDestructingSolverStorable3 [2022-01-11 00:10:38,398 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:38,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:38,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1995795547, now seen corresponding path program 2 times [2022-01-11 00:10:38,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:38,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869041927] [2022-01-11 00:10:38,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:38,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:38,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:38,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:38,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:10:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:38,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:38,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:10:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-11 00:10:38,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:38,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869041927] [2022-01-11 00:10:38,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869041927] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:10:38,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285014935] [2022-01-11 00:10:38,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 00:10:38,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:38,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:38,644 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) [2022-01-11 00:10:38,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 00:10:38,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 00:10:38,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:10:38,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 00:10:38,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:10:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-11 00:10:39,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:10:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-11 00:10:40,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285014935] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:10:40,197 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:10:40,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 18 [2022-01-11 00:10:40,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582549183] [2022-01-11 00:10:40,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:10:40,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-11 00:10:40,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-11 00:10:40,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-01-11 00:10:40,200 INFO L87 Difference]: Start difference. First operand 28 states and 44 transitions. Second operand has 18 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 17 states have internal predecessors, (43), 8 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) [2022-01-11 00:10:42,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:42,700 INFO L93 Difference]: Finished difference Result 65 states and 134 transitions. [2022-01-11 00:10:42,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:10:42,701 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 17 states have internal predecessors, (43), 8 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) Word has length 35 [2022-01-11 00:10:42,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:42,703 INFO L225 Difference]: With dead ends: 65 [2022-01-11 00:10:42,703 INFO L226 Difference]: Without dead ends: 40 [2022-01-11 00:10:42,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-01-11 00:10:42,704 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:42,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 123 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 180 Invalid, 0 Unknown, 16 Unchecked, 0.3s Time] [2022-01-11 00:10:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-11 00:10:42,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2022-01-11 00:10:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.1) internal successors, (22), 22 states have internal predecessors, (22), 6 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (32), 10 states have call predecessors, (32), 6 states have call successors, (32) [2022-01-11 00:10:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 60 transitions. [2022-01-11 00:10:42,716 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 60 transitions. Word has length 35 [2022-01-11 00:10:42,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:42,716 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 60 transitions. [2022-01-11 00:10:42,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 17 states have internal predecessors, (43), 8 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) [2022-01-11 00:10:42,716 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 60 transitions. [2022-01-11 00:10:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-11 00:10:42,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:42,718 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:42,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 00:10:42,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:42,932 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:42,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:42,932 INFO L85 PathProgramCache]: Analyzing trace with hash -176654579, now seen corresponding path program 3 times [2022-01-11 00:10:42,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:42,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068101154] [2022-01-11 00:10:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:42,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:42,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:43,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:43,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:10:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-11 00:10:43,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:43,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068101154] [2022-01-11 00:10:43,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068101154] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:10:43,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189401919] [2022-01-11 00:10:43,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 00:10:43,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:43,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:43,133 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) [2022-01-11 00:10:43,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 00:10:43,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-11 00:10:43,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:10:43,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-11 00:10:43,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:10:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-11 00:10:43,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:10:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-11 00:10:43,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189401919] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:10:43,791 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:10:43,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2022-01-11 00:10:43,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900403542] [2022-01-11 00:10:43,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:10:43,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-11 00:10:43,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:43,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-11 00:10:43,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-01-11 00:10:43,792 INFO L87 Difference]: Start difference. First operand 34 states and 60 transitions. Second operand has 19 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 17 states have internal predecessors, (41), 9 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2022-01-11 00:10:44,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:44,375 INFO L93 Difference]: Finished difference Result 98 states and 204 transitions. [2022-01-11 00:10:44,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-11 00:10:44,377 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 17 states have internal predecessors, (41), 9 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) Word has length 35 [2022-01-11 00:10:44,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:44,379 INFO L225 Difference]: With dead ends: 98 [2022-01-11 00:10:44,379 INFO L226 Difference]: Without dead ends: 67 [2022-01-11 00:10:44,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2022-01-11 00:10:44,381 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 58 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:44,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 71 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 00:10:44,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-11 00:10:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2022-01-11 00:10:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 38 states have internal predecessors, (41), 9 states have call successors, (9), 4 states have call predecessors, (9), 12 states have return successors, (42), 15 states have call predecessors, (42), 9 states have call successors, (42) [2022-01-11 00:10:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 92 transitions. [2022-01-11 00:10:44,395 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 92 transitions. Word has length 35 [2022-01-11 00:10:44,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:44,395 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 92 transitions. [2022-01-11 00:10:44,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 17 states have internal predecessors, (41), 9 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2022-01-11 00:10:44,396 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 92 transitions. [2022-01-11 00:10:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 00:10:44,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:10:44,398 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:44,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-11 00:10:44,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:44,619 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:10:44,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:10:44,620 INFO L85 PathProgramCache]: Analyzing trace with hash 103619678, now seen corresponding path program 4 times [2022-01-11 00:10:44,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:10:44,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696993925] [2022-01-11 00:10:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:10:44,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:10:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:10:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:10:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-11 00:10:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:10:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:10:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:10:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:10:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:10:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 62 proven. 28 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-01-11 00:10:44,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:10:44,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696993925] [2022-01-11 00:10:44,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696993925] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:10:44,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693448505] [2022-01-11 00:10:44,933 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-11 00:10:44,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:10:44,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:10:44,934 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) [2022-01-11 00:10:44,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 00:10:45,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-11 00:10:45,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:10:45,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-11 00:10:45,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:10:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-01-11 00:10:45,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:10:47,859 WARN L838 $PredicateComparison]: unable to prove that (forall ((|aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_8_61_101| Int) (|aux_div_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_8_61_101| Int)) (let ((.cse1 (* 4294967295 |aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_8_61_101|)) (.cse0 (+ (* |aux_div_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_8_61_101| 4294967296) |aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_8_61_101|))) (or (<= (+ |c_fibo_fibo_#resInt| 8589934591) .cse0) (>= |aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_8_61_101| 4294967296) (not (= 55 (mod (+ .cse1 |c_fibo_fibo_#resInt| 55) 4294967296))) (= 55 (mod (+ 56 .cse1) 4294967296)) (> 0 |aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_8_61_101|) (< .cse0 (+ |c_fibo_fibo_#resInt| 4294967295))))) is different from false [2022-01-11 00:10:53,631 WARN L838 $PredicateComparison]: unable to prove that (forall ((|aux_div_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_9_61_101| Int) (|aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_9_61_101| Int)) (let ((.cse0 (+ (* |aux_div_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_9_61_101| 4294967296) |aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_9_61_101|)) (.cse1 (* |aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_9_61_101| 4294967295))) (or (>= |aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_9_61_101| 4294967296) (<= (+ |c_fibo_fibo_#resInt| 8589934591) .cse0) (< .cse0 (+ |c_fibo_fibo_#resInt| 4294967295)) (> 0 |aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_9_61_101|) (= (mod (+ 56 .cse1) 4294967296) 55) (not (= (mod (+ |c_fibo_fibo_#resInt| 55 .cse1) 4294967296) 55))))) is different from false [2022-01-11 00:11:00,138 WARN L838 $PredicateComparison]: unable to prove that (forall ((|aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_10_56_91| Int) (|aux_div_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_10_56_91| Int)) (let ((.cse0 (+ (* |aux_div_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_10_56_91| 4294967296) |aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_10_56_91|)) (.cse1 (* 4294967295 |aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_10_56_91|))) (or (<= (+ |c_fibo_fibo_#resInt| 4294967296) .cse0) (not (= 55 (mod (+ 56 |c_fibo_fibo_#resInt| .cse1) 4294967296))) (>= |aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_10_56_91| 4294967296) (< .cse0 |c_fibo_fibo_#resInt|) (> 0 |aux_mod_aux_mod_v_fibo_fibo_#t~ret4Int_BEFORE_CALL_10_56_91|) (= (mod (+ 56 .cse1) 4294967296) 55)))) is different from false [2022-01-11 00:11:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 150 trivial. 54 not checked. [2022-01-11 00:11:00,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693448505] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:11:00,470 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:11:00,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 17] total 32 [2022-01-11 00:11:00,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890840578] [2022-01-11 00:11:00,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:11:00,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-11 00:11:00,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:11:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-11 00:11:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=720, Unknown=3, NotChecked=168, Total=992 [2022-01-11 00:11:00,472 INFO L87 Difference]: Start difference. First operand 58 states and 92 transitions. Second operand has 32 states, 25 states have (on average 1.92) internal successors, (48), 19 states have internal predecessors, (48), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (21), 15 states have call predecessors, (21), 9 states have call successors, (21) [2022-01-11 00:11:50,370 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-01-11 00:11:50,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-01-11 00:11:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:11:50,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=105, Invalid=774, Unknown=3, NotChecked=174, Total=1056 [2022-01-11 00:11:50,372 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:11:50,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 2 Unchecked, 0.0s Time] [2022-01-11 00:11:50,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 00:11:50,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:11:50,574 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.push(UndoableWrapperScript.java:54) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:193) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:160) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 58 more [2022-01-11 00:11:50,578 INFO L158 Benchmark]: Toolchain (without parser) took 75638.55ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 139.8MB in the beginning and 120.3MB in the end (delta: 19.5MB). Peak memory consumption was 58.1MB. Max. memory is 8.0GB. [2022-01-11 00:11:50,578 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 156.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-11 00:11:50,578 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.07ms. Allocated memory is still 188.7MB. Free memory was 139.6MB in the beginning and 164.7MB in the end (delta: -25.1MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB. [2022-01-11 00:11:50,578 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.04ms. Allocated memory is still 188.7MB. Free memory was 164.7MB in the beginning and 163.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-11 00:11:50,579 INFO L158 Benchmark]: Boogie Preprocessor took 17.98ms. Allocated memory is still 188.7MB. Free memory was 163.1MB in the beginning and 162.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-11 00:11:50,579 INFO L158 Benchmark]: RCFGBuilder took 223.37ms. Allocated memory is still 188.7MB. Free memory was 162.1MB in the beginning and 153.2MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-11 00:11:50,579 INFO L158 Benchmark]: IcfgTransformer took 78.62ms. Allocated memory is still 188.7MB. Free memory was 153.2MB in the beginning and 150.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-11 00:11:50,579 INFO L158 Benchmark]: TraceAbstraction took 75072.07ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 150.0MB in the beginning and 120.3MB in the end (delta: 29.7MB). Peak memory consumption was 68.3MB. Max. memory is 8.0GB. [2022-01-11 00:11:50,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 156.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 216.07ms. Allocated memory is still 188.7MB. Free memory was 139.6MB in the beginning and 164.7MB in the end (delta: -25.1MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.04ms. Allocated memory is still 188.7MB. Free memory was 164.7MB in the beginning and 163.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.98ms. Allocated memory is still 188.7MB. Free memory was 163.1MB in the beginning and 162.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 223.37ms. Allocated memory is still 188.7MB. Free memory was 162.1MB in the beginning and 153.2MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 78.62ms. Allocated memory is still 188.7MB. Free memory was 153.2MB in the beginning and 150.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 75072.07ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 150.0MB in the beginning and 120.3MB in the end (delta: 29.7MB). Peak memory consumption was 68.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...