/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/array-patterns/array11_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 10:05:42,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 10:05:42,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 10:05:42,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 10:05:42,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 10:05:42,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 10:05:42,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 10:05:42,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 10:05:42,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 10:05:42,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 10:05:42,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 10:05:42,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 10:05:42,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 10:05:42,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 10:05:42,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 10:05:42,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 10:05:42,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 10:05:42,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 10:05:42,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 10:05:42,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 10:05:42,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 10:05:42,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 10:05:42,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 10:05:42,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 10:05:42,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 10:05:42,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 10:05:42,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 10:05:42,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 10:05:42,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 10:05:42,290 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 10:05:42,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 10:05:42,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 10:05:42,291 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 10:05:42,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 10:05:42,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 10:05:42,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 10:05:42,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 10:05:42,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 10:05:42,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 10:05:42,292 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 10:05:42,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 10:05:42,292 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 10:05:42,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 10:05:42,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 10:05:42,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 10:05:42,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 10:05:42,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 10:05:42,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:05:42,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 10:05:42,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 10:05:42,294 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 10:05:42,294 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 10:05:42,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 10:05:42,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 10:05:42,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 10:05:42,508 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 10:05:42,508 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 10:05:42,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array11_pattern.c [2022-01-31 10:05:42,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cff95c45a/a4d9c6377d0b4c14ad7908d6bcd59f33/FLAG8ebcc8703 [2022-01-31 10:05:42,873 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 10:05:42,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array11_pattern.c [2022-01-31 10:05:42,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cff95c45a/a4d9c6377d0b4c14ad7908d6bcd59f33/FLAG8ebcc8703 [2022-01-31 10:05:43,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cff95c45a/a4d9c6377d0b4c14ad7908d6bcd59f33 [2022-01-31 10:05:43,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 10:05:43,296 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 10:05:43,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 10:05:43,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 10:05:43,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 10:05:43,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:05:43" (1/1) ... [2022-01-31 10:05:43,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a8e1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:43, skipping insertion in model container [2022-01-31 10:05:43,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:05:43" (1/1) ... [2022-01-31 10:05:43,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 10:05:43,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 10:05:43,458 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array11_pattern.c[1357,1370] [2022-01-31 10:05:43,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:05:43,486 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 10:05:43,495 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array11_pattern.c[1357,1370] [2022-01-31 10:05:43,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:05:43,520 INFO L208 MainTranslator]: Completed translation [2022-01-31 10:05:43,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:43 WrapperNode [2022-01-31 10:05:43,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 10:05:43,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 10:05:43,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 10:05:43,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 10:05:43,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:43" (1/1) ... [2022-01-31 10:05:43,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:43" (1/1) ... [2022-01-31 10:05:43,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:43" (1/1) ... [2022-01-31 10:05:43,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:43" (1/1) ... [2022-01-31 10:05:43,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:43" (1/1) ... [2022-01-31 10:05:43,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:43" (1/1) ... [2022-01-31 10:05:43,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:43" (1/1) ... [2022-01-31 10:05:43,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 10:05:43,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 10:05:43,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 10:05:43,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 10:05:43,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:43" (1/1) ... [2022-01-31 10:05:43,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:05:43,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:05:43,583 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) [2022-01-31 10:05:43,601 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 [2022-01-31 10:05:43,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 10:05:43,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 10:05:43,608 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 10:05:43,608 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 10:05:43,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 10:05:43,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 10:05:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 10:05:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 10:05:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 10:05:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 10:05:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 10:05:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 10:05:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 10:05:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 10:05:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 10:05:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 10:05:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 10:05:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 10:05:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 10:05:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 10:05:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 10:05:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 10:05:43,671 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 10:05:43,673 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 10:05:43,817 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 10:05:43,821 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 10:05:43,821 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 10:05:43,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:05:43 BoogieIcfgContainer [2022-01-31 10:05:43,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 10:05:43,835 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 10:05:43,835 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 10:05:43,836 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 10:05:43,839 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:05:43" (1/1) ... [2022-01-31 10:05:43,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:05:43 BasicIcfg [2022-01-31 10:05:43,864 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 10:05:43,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 10:05:43,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 10:05:43,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 10:05:43,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:05:43" (1/4) ... [2022-01-31 10:05:43,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebffe36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:05:43, skipping insertion in model container [2022-01-31 10:05:43,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:43" (2/4) ... [2022-01-31 10:05:43,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebffe36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:05:43, skipping insertion in model container [2022-01-31 10:05:43,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:05:43" (3/4) ... [2022-01-31 10:05:43,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebffe36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:05:43, skipping insertion in model container [2022-01-31 10:05:43,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:05:43" (4/4) ... [2022-01-31 10:05:43,869 INFO L111 eAbstractionObserver]: Analyzing ICFG array11_pattern.cJordan [2022-01-31 10:05:43,873 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 10:05:43,873 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 10:05:43,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 10:05:43,913 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2022-01-31 10:05:43,913 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 10:05:43,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 10:05:43,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 10:05:43,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:05:43,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:05:43,929 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:05:43,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:05:43,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1588046783, now seen corresponding path program 1 times [2022-01-31 10:05:43,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:05:43,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706210588] [2022-01-31 10:05:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:05:43,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:05:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:05:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:05:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:05:44,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 10:05:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:05:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:05:44,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:05:44,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706210588] [2022-01-31 10:05:44,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706210588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:05:44,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:05:44,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 10:05:44,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225132768] [2022-01-31 10:05:44,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:05:44,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 10:05:44,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:05:44,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 10:05:44,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:05:44,111 INFO L87 Difference]: Start difference. First operand has 35 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:05:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:05:44,176 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-01-31 10:05:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 10:05:44,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-01-31 10:05:44,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:05:44,182 INFO L225 Difference]: With dead ends: 35 [2022-01-31 10:05:44,182 INFO L226 Difference]: Without dead ends: 28 [2022-01-31 10:05:44,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:05:44,187 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:05:44,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 43 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:05:44,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-31 10:05:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-01-31 10:05:44,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 10:05:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-31 10:05:44,213 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2022-01-31 10:05:44,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:05:44,214 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-31 10:05:44,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:05:44,214 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-31 10:05:44,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-31 10:05:44,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:05:44,216 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:05:44,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 10:05:44,216 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:05:44,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:05:44,217 INFO L85 PathProgramCache]: Analyzing trace with hash 120049038, now seen corresponding path program 1 times [2022-01-31 10:05:44,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:05:44,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907160096] [2022-01-31 10:05:44,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:05:44,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:05:44,259 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:05:44,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113601276] [2022-01-31 10:05:44,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:05:44,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:05:44,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:05:44,272 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) [2022-01-31 10:05:44,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 10:05:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:05:44,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-31 10:05:44,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:05:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:05:44,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:05:44,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:05:44,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907160096] [2022-01-31 10:05:44,455 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:05:44,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113601276] [2022-01-31 10:05:44,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113601276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:05:44,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:05:44,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 10:05:44,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726187276] [2022-01-31 10:05:44,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:05:44,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 10:05:44,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:05:44,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 10:05:44,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:05:44,461 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 10:05:44,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:05:44,493 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-01-31 10:05:44,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 10:05:44,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-01-31 10:05:44,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:05:44,494 INFO L225 Difference]: With dead ends: 32 [2022-01-31 10:05:44,494 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 10:05:44,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 10:05:44,495 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:05:44,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:05:44,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 10:05:44,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-31 10:05:44,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 10:05:44,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-01-31 10:05:44,499 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 29 [2022-01-31 10:05:44,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:05:44,499 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-01-31 10:05:44,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 10:05:44,500 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-01-31 10:05:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 10:05:44,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:05:44,500 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:05:44,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 10:05:44,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:05:44,719 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:05:44,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:05:44,721 INFO L85 PathProgramCache]: Analyzing trace with hash 311512203, now seen corresponding path program 1 times [2022-01-31 10:05:44,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:05:44,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483710934] [2022-01-31 10:05:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:05:44,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:05:44,734 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:05:44,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905234003] [2022-01-31 10:05:44,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:05:44,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:05:44,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:05:44,735 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) [2022-01-31 10:05:44,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 10:05:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:05:44,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 10:05:44,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:05:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:05:44,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:05:44,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:05:44,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483710934] [2022-01-31 10:05:44,843 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:05:44,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905234003] [2022-01-31 10:05:44,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905234003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:05:44,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:05:44,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 10:05:44,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350964877] [2022-01-31 10:05:44,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:05:44,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 10:05:44,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:05:44,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 10:05:44,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:05:44,845 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 10:05:44,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:05:44,883 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-01-31 10:05:44,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 10:05:44,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-01-31 10:05:44,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:05:44,884 INFO L225 Difference]: With dead ends: 44 [2022-01-31 10:05:44,884 INFO L226 Difference]: Without dead ends: 32 [2022-01-31 10:05:44,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 10:05:44,885 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:05:44,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 93 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:05:44,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-31 10:05:44,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-01-31 10:05:44,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 10:05:44,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-01-31 10:05:44,888 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 31 [2022-01-31 10:05:44,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:05:44,889 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-01-31 10:05:44,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 10:05:44,889 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-01-31 10:05:44,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 10:05:44,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:05:44,889 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:05:44,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 10:05:45,106 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,SelfDestructingSolverStorable2 [2022-01-31 10:05:45,106 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:05:45,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:05:45,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1849148123, now seen corresponding path program 1 times [2022-01-31 10:05:45,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:05:45,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881621451] [2022-01-31 10:05:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:05:45,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:05:45,121 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:05:45,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543707169] [2022-01-31 10:05:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:05:45,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:05:45,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:05:45,127 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) [2022-01-31 10:05:45,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 10:05:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:05:45,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-31 10:05:45,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:05:45,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-31 10:05:45,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:05:45,324 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-01-31 10:05:45,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:05:45,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-01-31 10:05:45,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-01-31 10:05:45,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:05:45,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:05:45,708 INFO L353 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-01-31 10:05:45,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 61 [2022-01-31 10:05:45,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:05:45,725 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-01-31 10:05:45,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:05:45,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 47 [2022-01-31 10:05:45,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2022-01-31 10:05:45,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:05:45,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:05:45,938 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 72 [2022-01-31 10:05:45,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:05:45,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 17 [2022-01-31 10:05:46,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:05:46,095 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2022-01-31 10:05:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:05:46,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:06:10,092 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse7 (mod (+ c_~ARR_SIZE~0 4294967295) 4294967296))) (let ((.cse29 (* .cse7 4)) (.cse13 (<= .cse7 2147483647)) (.cse10 (mod (* (* c_main_~num~0 (* c_main_~num~0 (* c_main_~num~0 (+ (- 1) c_~ARR_SIZE~0)))) c_main_~num~0) 4294967296))) (let ((.cse19 (<= .cse10 2147483647)) (.cse3 (not .cse13)) (.cse6 (+ |c_main_~#array2~0.offset| .cse29)) (.cse9 (+ .cse29 |c_main_~#array1~0.offset|)) (.cse0 (* c_~ARR_SIZE~0 2)) (.cse16 (+ (- 17179869184) |c_main_~#array2~0.offset| .cse29)) (.cse17 (+ .cse7 (- 4294967296))) (.cse8 (select |c_#memory_int| |c_main_~#array1~0.base|)) (.cse18 (+ (- 17179869184) .cse29 |c_main_~#array1~0.offset|))) (and (or (and (let ((.cse5 (store |c_#memory_int| |c_main_~#array1~0.base| (store .cse8 .cse9 .cse10)))) (let ((.cse4 (store (select .cse5 |c_main_~#array2~0.base|) .cse6 .cse7))) (let ((.cse1 (select (select (store .cse5 |c_main_~#array2~0.base| .cse4) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|)) (.cse2 (select .cse4 |c_main_~#array2~0.offset|))) (or (= .cse0 (+ .cse1 2 .cse2 c_main_~sum~0)) (= (+ .cse1 .cse2 c_main_~sum~0) 0) .cse3)))) (let ((.cse14 (store |c_#memory_int| |c_main_~#array1~0.base| (store .cse8 .cse18 .cse10)))) (let ((.cse15 (store (select .cse14 |c_main_~#array2~0.base|) .cse16 .cse17))) (let ((.cse11 (select .cse15 |c_main_~#array2~0.offset|)) (.cse12 (select (select (store .cse14 |c_main_~#array2~0.base| .cse15) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (or (= (+ 2 .cse11 .cse12 c_main_~sum~0) .cse0) .cse13 (= (+ .cse11 .cse12 c_main_~sum~0) 0)))))) (not .cse19)) (or .cse19 (let ((.cse24 (+ .cse10 (- 4294967296)))) (and (let ((.cse22 (store |c_#memory_int| |c_main_~#array1~0.base| (store .cse8 .cse9 .cse24)))) (let ((.cse23 (store (select .cse22 |c_main_~#array2~0.base|) .cse6 .cse7))) (let ((.cse20 (select .cse23 |c_main_~#array2~0.offset|)) (.cse21 (select (select (store .cse22 |c_main_~#array2~0.base| .cse23) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (or .cse3 (= (+ .cse20 .cse21 c_main_~sum~0) 0) (= .cse0 (+ .cse20 2 .cse21 c_main_~sum~0)))))) (let ((.cse27 (store |c_#memory_int| |c_main_~#array1~0.base| (store .cse8 .cse18 .cse24)))) (let ((.cse28 (store (select .cse27 |c_main_~#array2~0.base|) .cse16 .cse17))) (let ((.cse25 (select .cse28 |c_main_~#array2~0.offset|)) (.cse26 (select (select (store .cse27 |c_main_~#array2~0.base| .cse28) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (or .cse13 (= (+ .cse25 .cse26 c_main_~sum~0) 0) (= .cse0 (+ .cse25 .cse26 2 c_main_~sum~0))))))))))))) is different from false [2022-01-31 10:07:17,668 WARN L228 SmtUtils]: Spent 28.92s on a formula simplification that was a NOOP. DAG size: 98 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 10:08:09,643 WARN L228 SmtUtils]: Spent 28.85s on a formula simplification that was a NOOP. DAG size: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 10:08:53,102 WARN L228 SmtUtils]: Spent 43.41s on a formula simplification. DAG size of input: 28 DAG size of output: 25 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-31 10:08:53,102 INFO L353 Elim1Store]: treesize reduction 17, result has 66.0 percent of original size [2022-01-31 10:08:53,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 4622 treesize of output 3407 [2022-01-31 10:08:55,689 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:08:55,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11247 treesize of output 11091 [2022-01-31 10:08:55,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:08:58,661 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:08:58,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21892 treesize of output 21609 [2022-01-31 10:08:58,947 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:08:58,949 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 149384 treesize of output 147337 [2022-01-31 10:09:06,440 WARN L228 SmtUtils]: Spent 7.02s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-31 10:09:06,443 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:09:06,446 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 180740 treesize of output 180197 [2022-01-31 10:09:06,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:06,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:13,690 WARN L228 SmtUtils]: Spent 6.69s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-31 10:09:13,690 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:09:13,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184582 treesize of output 184387