/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/array24_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 10:20:22,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 10:20:22,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 10:20:22,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 10:20:22,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 10:20:22,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 10:20:22,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 10:20:22,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 10:20:22,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 10:20:22,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 10:20:22,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 10:20:22,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 10:20:22,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 10:20:22,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 10:20:22,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 10:20:22,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 10:20:22,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 10:20:22,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 10:20:22,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 10:20:22,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 10:20:22,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 10:20:22,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 10:20:22,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 10:20:22,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 10:20:22,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 10:20:22,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 10:20:22,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 10:20:22,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 10:20:22,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 10:20:22,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 10:20:22,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 10:20:22,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 10:20:22,307 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 10:20:22,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 10:20:22,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 10:20:22,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 10:20:22,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 10:20:22,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 10:20:22,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 10:20:22,308 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 10:20:22,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 10:20:22,308 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 10:20:22,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 10:20:22,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 10:20:22,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 10:20:22,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 10:20:22,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 10:20:22,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:20:22,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 10:20:22,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 10:20:22,310 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 10:20:22,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 10:20:22,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 10:20:22,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 10:20:22,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 10:20:22,491 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 10:20:22,492 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 10:20:22,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array24_pattern.c [2022-01-31 10:20:22,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e026331/897e233ef61a4c67bf465c15fcc79899/FLAGc5a648051 [2022-01-31 10:20:22,857 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 10:20:22,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array24_pattern.c [2022-01-31 10:20:22,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e026331/897e233ef61a4c67bf465c15fcc79899/FLAGc5a648051 [2022-01-31 10:20:23,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e026331/897e233ef61a4c67bf465c15fcc79899 [2022-01-31 10:20:23,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 10:20:23,273 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 10:20:23,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 10:20:23,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 10:20:23,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 10:20:23,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:20:23" (1/1) ... [2022-01-31 10:20:23,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f2b744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:23, skipping insertion in model container [2022-01-31 10:20:23,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:20:23" (1/1) ... [2022-01-31 10:20:23,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 10:20:23,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 10:20:23,420 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/array24_pattern.c[1359,1372] [2022-01-31 10:20:23,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:20:23,458 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 10:20:23,470 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/array24_pattern.c[1359,1372] [2022-01-31 10:20:23,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:20:23,489 INFO L208 MainTranslator]: Completed translation [2022-01-31 10:20:23,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:23 WrapperNode [2022-01-31 10:20:23,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 10:20:23,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 10:20:23,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 10:20:23,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 10:20:23,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:23" (1/1) ... [2022-01-31 10:20:23,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:23" (1/1) ... [2022-01-31 10:20:23,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:23" (1/1) ... [2022-01-31 10:20:23,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:23" (1/1) ... [2022-01-31 10:20:23,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:23" (1/1) ... [2022-01-31 10:20:23,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:23" (1/1) ... [2022-01-31 10:20:23,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:23" (1/1) ... [2022-01-31 10:20:23,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 10:20:23,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 10:20:23,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 10:20:23,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 10:20:23,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:23" (1/1) ... [2022-01-31 10:20:23,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:20:23,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:23,553 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 10:20:23,564 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 10:20:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 10:20:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 10:20:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 10:20:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 10:20:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 10:20:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2022-01-31 10:20:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 10:20:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 10:20:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 10:20:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 10:20:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 10:20:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 10:20:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 10:20:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 10:20:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 10:20:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2022-01-31 10:20:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 10:20:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 10:20:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 10:20:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 10:20:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 10:20:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 10:20:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 10:20:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 10:20:23,626 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 10:20:23,627 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 10:20:23,779 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 10:20:23,783 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 10:20:23,783 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-31 10:20:23,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:20:23 BoogieIcfgContainer [2022-01-31 10:20:23,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 10:20:23,785 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 10:20:23,785 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 10:20:23,786 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 10:20:23,787 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:20:23" (1/1) ... [2022-01-31 10:20:23,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:20:23 BasicIcfg [2022-01-31 10:20:23,818 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 10:20:23,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 10:20:23,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 10:20:23,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 10:20:23,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:20:23" (1/4) ... [2022-01-31 10:20:23,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156925b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:20:23, skipping insertion in model container [2022-01-31 10:20:23,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:23" (2/4) ... [2022-01-31 10:20:23,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156925b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:20:23, skipping insertion in model container [2022-01-31 10:20:23,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:20:23" (3/4) ... [2022-01-31 10:20:23,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156925b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:20:23, skipping insertion in model container [2022-01-31 10:20:23,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:20:23" (4/4) ... [2022-01-31 10:20:23,822 INFO L111 eAbstractionObserver]: Analyzing ICFG array24_pattern.cJordan [2022-01-31 10:20:23,840 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 10:20:23,840 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 10:20:23,874 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 10:20:23,897 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 10:20:23,897 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 10:20:23,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 34 states have internal predecessors, (50), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 10:20:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 10:20:23,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:23,912 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 10:20:23,912 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:23,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:23,916 INFO L85 PathProgramCache]: Analyzing trace with hash 303799271, now seen corresponding path program 1 times [2022-01-31 10:20:23,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:23,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763947082] [2022-01-31 10:20:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:23,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:24,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:20:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:24,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 10:20:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:24,115 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 10:20:24,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:24,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763947082] [2022-01-31 10:20:24,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763947082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:20:24,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:20:24,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 10:20:24,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761080426] [2022-01-31 10:20:24,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:20:24,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 10:20:24,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:24,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 10:20:24,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:20:24,149 INFO L87 Difference]: Start difference. First operand has 48 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 34 states have internal predecessors, (50), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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 10:20:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:24,245 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2022-01-31 10:20:24,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 10:20:24,247 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 10:20:24,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:24,251 INFO L225 Difference]: With dead ends: 48 [2022-01-31 10:20:24,251 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 10:20:24,252 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 10:20:24,256 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:24,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 60 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:20:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 10:20:24,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-01-31 10:20:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 10:20:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-01-31 10:20:24,285 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 20 [2022-01-31 10:20:24,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:24,286 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-01-31 10:20:24,286 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 10:20:24,286 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-01-31 10:20:24,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 10:20:24,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:24,288 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 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 10:20:24,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 10:20:24,289 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:24,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:24,290 INFO L85 PathProgramCache]: Analyzing trace with hash -697382199, now seen corresponding path program 1 times [2022-01-31 10:20:24,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:24,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054652819] [2022-01-31 10:20:24,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:24,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:24,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:24,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636165768] [2022-01-31 10:20:24,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:24,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:24,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:24,334 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 10:20:24,335 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 10:20:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:24,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 10:20:24,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:20:24,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:20:24,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:24,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054652819] [2022-01-31 10:20:24,500 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:24,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636165768] [2022-01-31 10:20:24,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636165768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:20:24,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:20:24,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 10:20:24,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130927298] [2022-01-31 10:20:24,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:20:24,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 10:20:24,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:24,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 10:20:24,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 10:20:24,503 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 10:20:24,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:24,577 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2022-01-31 10:20:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 10:20:24,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2022-01-31 10:20:24,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:24,578 INFO L225 Difference]: With dead ends: 53 [2022-01-31 10:20:24,578 INFO L226 Difference]: Without dead ends: 53 [2022-01-31 10:20:24,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:20:24,579 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 50 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:24,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 119 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:20:24,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-31 10:20:24,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2022-01-31 10:20:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 10:20:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2022-01-31 10:20:24,585 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 40 [2022-01-31 10:20:24,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:24,585 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2022-01-31 10:20:24,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 10:20:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2022-01-31 10:20:24,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-31 10:20:24,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:24,586 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:24,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-31 10:20:24,802 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 10:20:24,803 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:24,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:24,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2080091948, now seen corresponding path program 1 times [2022-01-31 10:20:24,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:24,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88933567] [2022-01-31 10:20:24,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:24,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:24,849 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:24,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944489531] [2022-01-31 10:20:24,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:24,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:24,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:24,860 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 10:20:24,872 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 10:20:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:24,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 10:20:24,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 10:20:25,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:20:25,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:25,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88933567] [2022-01-31 10:20:25,030 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:25,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944489531] [2022-01-31 10:20:25,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944489531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:20:25,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:20:25,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 10:20:25,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521478108] [2022-01-31 10:20:25,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:20:25,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 10:20:25,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:25,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 10:20:25,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 10:20:25,033 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 10:20:25,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:25,067 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2022-01-31 10:20:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 10:20:25,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-01-31 10:20:25,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:25,069 INFO L225 Difference]: With dead ends: 51 [2022-01-31 10:20:25,069 INFO L226 Difference]: Without dead ends: 51 [2022-01-31 10:20:25,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:20:25,072 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 24 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:25,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 96 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:20:25,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-31 10:20:25,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2022-01-31 10:20:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 10:20:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2022-01-31 10:20:25,082 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 46 [2022-01-31 10:20:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:25,083 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2022-01-31 10:20:25,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 10:20:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2022-01-31 10:20:25,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-31 10:20:25,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:25,085 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:25,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-31 10:20:25,299 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 10:20:25,300 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:25,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:25,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1969572247, now seen corresponding path program 1 times [2022-01-31 10:20:25,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:25,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748444996] [2022-01-31 10:20:25,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:25,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:25,313 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:25,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572185139] [2022-01-31 10:20:25,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:25,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:25,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:25,327 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 10:20:25,333 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 10:20:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:25,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:20:25,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 10:20:25,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-31 10:20:25,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:25,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748444996] [2022-01-31 10:20:25,587 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:25,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572185139] [2022-01-31 10:20:25,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572185139] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:25,587 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:25,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-01-31 10:20:25,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823352434] [2022-01-31 10:20:25,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:25,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 10:20:25,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:25,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 10:20:25,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-31 10:20:25,589 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 10:20:25,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:25,670 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2022-01-31 10:20:25,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 10:20:25,670 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2022-01-31 10:20:25,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:25,671 INFO L225 Difference]: With dead ends: 55 [2022-01-31 10:20:25,671 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 10:20:25,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-01-31 10:20:25,672 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 55 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:25,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 120 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:20:25,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 10:20:25,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2022-01-31 10:20:25,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 10:20:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2022-01-31 10:20:25,675 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 50 [2022-01-31 10:20:25,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:25,676 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2022-01-31 10:20:25,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 10:20:25,676 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2022-01-31 10:20:25,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 10:20:25,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:25,677 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:20:25,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-31 10:20:25,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:25,893 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:25,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:25,894 INFO L85 PathProgramCache]: Analyzing trace with hash 417707326, now seen corresponding path program 2 times [2022-01-31 10:20:25,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:25,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875070164] [2022-01-31 10:20:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:25,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:25,905 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:25,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070930596] [2022-01-31 10:20:25,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:20:25,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:25,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:25,916 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) [2022-01-31 10:20:25,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 10:20:25,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:20:25,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:20:25,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:20:25,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 10:20:26,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:26,215 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-31 10:20:26,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:26,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875070164] [2022-01-31 10:20:26,215 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:26,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070930596] [2022-01-31 10:20:26,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070930596] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:26,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:26,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-31 10:20:26,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27683820] [2022-01-31 10:20:26,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:26,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 10:20:26,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:26,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 10:20:26,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-31 10:20:26,217 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 10:20:26,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:26,331 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2022-01-31 10:20:26,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 10:20:26,332 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2022-01-31 10:20:26,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:26,333 INFO L225 Difference]: With dead ends: 79 [2022-01-31 10:20:26,333 INFO L226 Difference]: Without dead ends: 79 [2022-01-31 10:20:26,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-01-31 10:20:26,333 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 47 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:26,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 156 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:20:26,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-01-31 10:20:26,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2022-01-31 10:20:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 10:20:26,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2022-01-31 10:20:26,338 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 54 [2022-01-31 10:20:26,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:26,338 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2022-01-31 10:20:26,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 10:20:26,338 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2022-01-31 10:20:26,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 10:20:26,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:26,339 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1] [2022-01-31 10:20:26,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-31 10:20:26,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:26,556 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:26,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:26,556 INFO L85 PathProgramCache]: Analyzing trace with hash -644407383, now seen corresponding path program 3 times [2022-01-31 10:20:26,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:26,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855222886] [2022-01-31 10:20:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:26,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:26,574 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:26,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829973981] [2022-01-31 10:20:26,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:20:26,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:26,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:26,592 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) [2022-01-31 10:20:26,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 10:20:27,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-01-31 10:20:27,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:20:27,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 75 conjunts are in the unsatisfiable core [2022-01-31 10:20:27,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:27,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 61 treesize of output 56 [2022-01-31 10:20:27,766 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 19 treesize of output 18 [2022-01-31 10:20:27,771 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:20:27,846 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 72 treesize of output 65 [2022-01-31 10:20:27,866 INFO L353 Elim1Store]: treesize reduction 116, result has 18.9 percent of original size [2022-01-31 10:20:27,866 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 84 [2022-01-31 10:20:27,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:27,884 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 40 treesize of output 17 [2022-01-31 10:20:28,015 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 96 treesize of output 87 [2022-01-31 10:20:28,043 INFO L353 Elim1Store]: treesize reduction 307, result has 17.0 percent of original size [2022-01-31 10:20:28,044 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 86 treesize of output 127 [2022-01-31 10:20:28,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:28,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:28,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:28,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 22 [2022-01-31 10:20:28,165 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 111 treesize of output 100 [2022-01-31 10:20:28,215 INFO L353 Elim1Store]: treesize reduction 484, result has 15.5 percent of original size [2022-01-31 10:20:28,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 99 treesize of output 156 [2022-01-31 10:20:28,237 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:20:28,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:28,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:28,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:28,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:28,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:28,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:28,257 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 30 [2022-01-31 10:20:41,978 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 136 treesize of output 119 [2022-01-31 10:20:42,198 INFO L353 Elim1Store]: treesize reduction 590, result has 22.6 percent of original size [2022-01-31 10:20:42,199 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 118 treesize of output 242 [2022-01-31 10:20:42,485 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:20:42,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:42,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:42,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:42,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:42,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:42,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:42,625 INFO L353 Elim1Store]: treesize reduction 129, result has 43.2 percent of original size [2022-01-31 10:20:42,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 187 treesize of output 216 [2022-01-31 10:20:43,353 INFO L353 Elim1Store]: treesize reduction 438, result has 0.7 percent of original size [2022-01-31 10:20:43,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 121 treesize of output 36 [2022-01-31 10:20:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:20:43,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:48,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:48,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855222886] [2022-01-31 10:20:48,158 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:48,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829973981] [2022-01-31 10:20:48,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829973981] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:20:48,158 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:20:48,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-01-31 10:20:48,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751224882] [2022-01-31 10:20:48,158 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:48,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 10:20:48,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:48,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 10:20:48,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=2081, Unknown=2, NotChecked=0, Total=2550 [2022-01-31 10:20:48,160 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 35 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-01-31 10:20:48,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:48,832 INFO L93 Difference]: Finished difference Result 116 states and 139 transitions. [2022-01-31 10:20:48,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 10:20:48,833 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 68 [2022-01-31 10:20:48,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:48,835 INFO L225 Difference]: With dead ends: 116 [2022-01-31 10:20:48,835 INFO L226 Difference]: Without dead ends: 113 [2022-01-31 10:20:48,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 36 SyntacticMatches, 9 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1620 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=514, Invalid=2676, Unknown=2, NotChecked=0, Total=3192 [2022-01-31 10:20:48,836 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 45 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:48,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 293 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 166 Invalid, 0 Unknown, 65 Unchecked, 0.1s Time] [2022-01-31 10:20:48,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-01-31 10:20:48,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2022-01-31 10:20:48,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 91 states have (on average 1.2087912087912087) internal successors, (110), 91 states have internal predecessors, (110), 11 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-01-31 10:20:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2022-01-31 10:20:48,842 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 68 [2022-01-31 10:20:48,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:48,843 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2022-01-31 10:20:48,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-01-31 10:20:48,843 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2022-01-31 10:20:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 10:20:48,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:48,844 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1] [2022-01-31 10:20:48,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-31 10:20:49,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:49,055 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:49,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:49,055 INFO L85 PathProgramCache]: Analyzing trace with hash 600357098, now seen corresponding path program 1 times [2022-01-31 10:20:49,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:49,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82350152] [2022-01-31 10:20:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:49,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:49,078 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:49,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033593606] [2022-01-31 10:20:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:49,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:49,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:49,080 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:20:49,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 10:20:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:49,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-31 10:20:49,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-31 10:20:49,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:20:49,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:49,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82350152] [2022-01-31 10:20:49,211 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:49,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033593606] [2022-01-31 10:20:49,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033593606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:20:49,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:20:49,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 10:20:49,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337438819] [2022-01-31 10:20:49,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:20:49,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 10:20:49,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:49,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 10:20:49,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:20:49,213 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-31 10:20:49,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:49,224 INFO L93 Difference]: Finished difference Result 111 states and 132 transitions. [2022-01-31 10:20:49,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 10:20:49,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 68 [2022-01-31 10:20:49,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:49,226 INFO L225 Difference]: With dead ends: 111 [2022-01-31 10:20:49,226 INFO L226 Difference]: Without dead ends: 111 [2022-01-31 10:20:49,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 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 10:20:49,227 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 1 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:49,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 94 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:20:49,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-01-31 10:20:49,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2022-01-31 10:20:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 92 states have (on average 1.1956521739130435) internal successors, (110), 92 states have internal predecessors, (110), 11 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-01-31 10:20:49,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 131 transitions. [2022-01-31 10:20:49,237 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 131 transitions. Word has length 68 [2022-01-31 10:20:49,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:49,237 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 131 transitions. [2022-01-31 10:20:49,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-31 10:20:49,238 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 131 transitions. [2022-01-31 10:20:49,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 10:20:49,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:49,239 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1] [2022-01-31 10:20:49,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-31 10:20:49,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:49,455 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:49,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:49,456 INFO L85 PathProgramCache]: Analyzing trace with hash -899143928, now seen corresponding path program 1 times [2022-01-31 10:20:49,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:49,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609175627] [2022-01-31 10:20:49,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:49,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:49,463 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:49,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212604191] [2022-01-31 10:20:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:49,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:49,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:49,482 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:20:49,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-31 10:20:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:49,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:20:49,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-31 10:20:49,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:20:49,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:49,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609175627] [2022-01-31 10:20:49,629 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:49,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212604191] [2022-01-31 10:20:49,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212604191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:20:49,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:20:49,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 10:20:49,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017129146] [2022-01-31 10:20:49,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:20:49,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 10:20:49,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:49,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 10:20:49,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:20:49,630 INFO L87 Difference]: Start difference. First operand 110 states and 131 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-31 10:20:49,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:49,651 INFO L93 Difference]: Finished difference Result 120 states and 145 transitions. [2022-01-31 10:20:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 10:20:49,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 68 [2022-01-31 10:20:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:49,653 INFO L225 Difference]: With dead ends: 120 [2022-01-31 10:20:49,653 INFO L226 Difference]: Without dead ends: 120 [2022-01-31 10:20:49,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 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 10:20:49,653 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 5 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:49,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 221 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:20:49,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-01-31 10:20:49,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2022-01-31 10:20:49,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 95 states have (on average 1.1894736842105262) internal successors, (113), 95 states have internal predecessors, (113), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-01-31 10:20:49,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 136 transitions. [2022-01-31 10:20:49,662 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 136 transitions. Word has length 68 [2022-01-31 10:20:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:49,662 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 136 transitions. [2022-01-31 10:20:49,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-31 10:20:49,662 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 136 transitions. [2022-01-31 10:20:49,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-31 10:20:49,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:49,663 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1] [2022-01-31 10:20:49,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-31 10:20:49,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:49,883 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:49,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:49,883 INFO L85 PathProgramCache]: Analyzing trace with hash 383626307, now seen corresponding path program 4 times [2022-01-31 10:20:49,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:49,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567284537] [2022-01-31 10:20:49,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:49,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:49,892 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:49,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929604611] [2022-01-31 10:20:49,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 10:20:49,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:49,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:49,895 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:20:49,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-31 10:20:49,949 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 10:20:49,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:20:49,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:20:49,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 10:20:50,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-31 10:20:50,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:50,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567284537] [2022-01-31 10:20:50,200 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:50,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929604611] [2022-01-31 10:20:50,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929604611] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:50,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:50,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-31 10:20:50,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016518806] [2022-01-31 10:20:50,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:50,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 10:20:50,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:50,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 10:20:50,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-31 10:20:50,201 INFO L87 Difference]: Start difference. First operand 114 states and 136 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 10:20:50,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:50,369 INFO L93 Difference]: Finished difference Result 199 states and 240 transitions. [2022-01-31 10:20:50,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 10:20:50,369 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-01-31 10:20:50,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:50,370 INFO L225 Difference]: With dead ends: 199 [2022-01-31 10:20:50,370 INFO L226 Difference]: Without dead ends: 199 [2022-01-31 10:20:50,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-01-31 10:20:50,371 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 190 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:50,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 172 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:20:50,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-01-31 10:20:50,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 161. [2022-01-31 10:20:50,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 135 states have (on average 1.1777777777777778) internal successors, (159), 135 states have internal predecessors, (159), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (18), 15 states have call predecessors, (18), 13 states have call successors, (18) [2022-01-31 10:20:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 192 transitions. [2022-01-31 10:20:50,378 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 192 transitions. Word has length 70 [2022-01-31 10:20:50,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:50,381 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 192 transitions. [2022-01-31 10:20:50,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 10:20:50,382 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 192 transitions. [2022-01-31 10:20:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-31 10:20:50,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:50,383 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1] [2022-01-31 10:20:50,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-31 10:20:50,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-31 10:20:50,584 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:50,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2050462748, now seen corresponding path program 5 times [2022-01-31 10:20:50,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:50,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447578815] [2022-01-31 10:20:50,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:50,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:50,592 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:50,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397444911] [2022-01-31 10:20:50,592 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 10:20:50,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:50,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:50,593 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:20:50,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-31 10:20:50,660 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-31 10:20:50,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:20:50,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:20:50,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:50,769 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-31 10:20:50,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-31 10:20:50,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:50,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447578815] [2022-01-31 10:20:50,865 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:50,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397444911] [2022-01-31 10:20:50,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397444911] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:50,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:50,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-31 10:20:50,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872725530] [2022-01-31 10:20:50,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:50,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 10:20:50,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:50,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 10:20:50,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-31 10:20:50,868 INFO L87 Difference]: Start difference. First operand 161 states and 192 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 10:20:51,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:51,077 INFO L93 Difference]: Finished difference Result 169 states and 196 transitions. [2022-01-31 10:20:51,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 10:20:51,077 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-01-31 10:20:51,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:51,078 INFO L225 Difference]: With dead ends: 169 [2022-01-31 10:20:51,078 INFO L226 Difference]: Without dead ends: 169 [2022-01-31 10:20:51,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-01-31 10:20:51,079 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 94 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:51,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 385 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:20:51,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-01-31 10:20:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2022-01-31 10:20:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 135 states have internal predecessors, (156), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (18), 15 states have call predecessors, (18), 13 states have call successors, (18) [2022-01-31 10:20:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 189 transitions. [2022-01-31 10:20:51,084 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 189 transitions. Word has length 70 [2022-01-31 10:20:51,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:51,084 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 189 transitions. [2022-01-31 10:20:51,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 10:20:51,084 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 189 transitions. [2022-01-31 10:20:51,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 10:20:51,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:51,085 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-01-31 10:20:51,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-31 10:20:51,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-31 10:20:51,300 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:51,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:51,300 INFO L85 PathProgramCache]: Analyzing trace with hash 622174167, now seen corresponding path program 1 times [2022-01-31 10:20:51,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:51,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643917803] [2022-01-31 10:20:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:51,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:51,315 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:51,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044330776] [2022-01-31 10:20:51,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:51,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:51,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:51,317 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:20:51,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-31 10:20:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:51,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 10:20:51,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-31 10:20:51,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:20:51,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:51,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643917803] [2022-01-31 10:20:51,480 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:51,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044330776] [2022-01-31 10:20:51,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044330776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:20:51,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:20:51,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 10:20:51,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338896206] [2022-01-31 10:20:51,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:20:51,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 10:20:51,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:51,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 10:20:51,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:20:51,481 INFO L87 Difference]: Start difference. First operand 161 states and 189 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:20:51,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:51,505 INFO L93 Difference]: Finished difference Result 165 states and 190 transitions. [2022-01-31 10:20:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 10:20:51,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 74 [2022-01-31 10:20:51,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:51,506 INFO L225 Difference]: With dead ends: 165 [2022-01-31 10:20:51,506 INFO L226 Difference]: Without dead ends: 165 [2022-01-31 10:20:51,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 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 10:20:51,507 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 5 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:51,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 186 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:20:51,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-01-31 10:20:51,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2022-01-31 10:20:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 135 states have (on average 1.1333333333333333) internal successors, (153), 135 states have internal predecessors, (153), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (18), 15 states have call predecessors, (18), 13 states have call successors, (18) [2022-01-31 10:20:51,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 186 transitions. [2022-01-31 10:20:51,511 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 186 transitions. Word has length 74 [2022-01-31 10:20:51,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:51,511 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 186 transitions. [2022-01-31 10:20:51,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:20:51,511 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 186 transitions. [2022-01-31 10:20:51,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 10:20:51,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:51,512 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-01-31 10:20:51,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-31 10:20:51,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-31 10:20:51,728 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:51,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:51,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1647666166, now seen corresponding path program 1 times [2022-01-31 10:20:51,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:51,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090508580] [2022-01-31 10:20:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:51,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:51,739 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:51,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030172900] [2022-01-31 10:20:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:51,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:51,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:51,745 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:20:51,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-31 10:20:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:51,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-31 10:20:51,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-31 10:20:51,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-31 10:20:52,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:52,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090508580] [2022-01-31 10:20:52,224 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:52,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030172900] [2022-01-31 10:20:52,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030172900] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:52,224 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:52,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2022-01-31 10:20:52,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089277888] [2022-01-31 10:20:52,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:52,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 10:20:52,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:52,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 10:20:52,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-01-31 10:20:52,225 INFO L87 Difference]: Start difference. First operand 161 states and 186 transitions. Second operand has 17 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 5 states have call successors, (12), 4 states have call predecessors, (12), 7 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2022-01-31 10:20:52,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:52,533 INFO L93 Difference]: Finished difference Result 177 states and 196 transitions. [2022-01-31 10:20:52,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 10:20:52,533 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 5 states have call successors, (12), 4 states have call predecessors, (12), 7 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 74 [2022-01-31 10:20:52,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:52,534 INFO L225 Difference]: With dead ends: 177 [2022-01-31 10:20:52,534 INFO L226 Difference]: Without dead ends: 175 [2022-01-31 10:20:52,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2022-01-31 10:20:52,535 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 87 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:52,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 312 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:20:52,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-01-31 10:20:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 166. [2022-01-31 10:20:52,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 138 states have (on average 1.108695652173913) internal successors, (153), 140 states have internal predecessors, (153), 16 states have call successors, (16), 12 states have call predecessors, (16), 11 states have return successors, (16), 13 states have call predecessors, (16), 14 states have call successors, (16) [2022-01-31 10:20:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 185 transitions. [2022-01-31 10:20:52,539 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 185 transitions. Word has length 74 [2022-01-31 10:20:52,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:52,539 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 185 transitions. [2022-01-31 10:20:52,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 5 states have call successors, (12), 4 states have call predecessors, (12), 7 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2022-01-31 10:20:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 185 transitions. [2022-01-31 10:20:52,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-31 10:20:52,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:52,540 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2022-01-31 10:20:52,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-31 10:20:52,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-31 10:20:52,751 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:52,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:52,752 INFO L85 PathProgramCache]: Analyzing trace with hash -139488220, now seen corresponding path program 6 times [2022-01-31 10:20:52,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:52,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916276404] [2022-01-31 10:20:52,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:52,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:52,762 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:52,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232681746] [2022-01-31 10:20:52,762 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 10:20:52,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:52,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:52,788 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:20:52,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-31 10:20:52,942 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-01-31 10:20:52,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:20:52,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:20:52,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-31 10:20:53,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-31 10:20:53,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:53,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916276404] [2022-01-31 10:20:53,195 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:53,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232681746] [2022-01-31 10:20:53,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232681746] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:53,196 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:53,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-01-31 10:20:53,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366764407] [2022-01-31 10:20:53,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:53,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 10:20:53,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:53,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 10:20:53,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-01-31 10:20:53,197 INFO L87 Difference]: Start difference. First operand 166 states and 185 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-31 10:20:53,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:53,373 INFO L93 Difference]: Finished difference Result 130 states and 143 transitions. [2022-01-31 10:20:53,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 10:20:53,375 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 75 [2022-01-31 10:20:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:53,375 INFO L225 Difference]: With dead ends: 130 [2022-01-31 10:20:53,375 INFO L226 Difference]: Without dead ends: 82 [2022-01-31 10:20:53,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-01-31 10:20:53,376 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 95 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:53,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 228 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:20:53,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-31 10:20:53,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2022-01-31 10:20:53,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 66 states have (on average 1.1363636363636365) internal successors, (75), 66 states have internal predecessors, (75), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-31 10:20:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2022-01-31 10:20:53,378 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 75 [2022-01-31 10:20:53,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:53,378 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2022-01-31 10:20:53,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-31 10:20:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2022-01-31 10:20:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-31 10:20:53,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:53,379 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1] [2022-01-31 10:20:53,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-31 10:20:53,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-31 10:20:53,588 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:53,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:53,588 INFO L85 PathProgramCache]: Analyzing trace with hash 740504265, now seen corresponding path program 7 times [2022-01-31 10:20:53,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:53,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99878784] [2022-01-31 10:20:53,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:53,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:53,595 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:53,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849577505] [2022-01-31 10:20:53,596 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 10:20:53,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:53,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:53,597 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:20:53,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-31 10:20:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:53,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:20:53,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:53,820 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 10:20:53,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-31 10:20:53,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:53,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99878784] [2022-01-31 10:20:53,971 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:53,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849577505] [2022-01-31 10:20:53,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849577505] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:53,972 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:53,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-01-31 10:20:53,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059617783] [2022-01-31 10:20:53,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:53,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 10:20:53,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:53,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 10:20:53,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-01-31 10:20:53,973 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 10:20:54,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:54,143 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2022-01-31 10:20:54,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 10:20:54,144 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-01-31 10:20:54,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:54,144 INFO L225 Difference]: With dead ends: 114 [2022-01-31 10:20:54,144 INFO L226 Difference]: Without dead ends: 114 [2022-01-31 10:20:54,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-01-31 10:20:54,145 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 58 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:54,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 217 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:20:54,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-01-31 10:20:54,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 98. [2022-01-31 10:20:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 84 states have (on average 1.130952380952381) internal successors, (95), 84 states have internal predecessors, (95), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-31 10:20:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2022-01-31 10:20:54,147 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 76 [2022-01-31 10:20:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:54,148 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2022-01-31 10:20:54,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 10:20:54,148 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2022-01-31 10:20:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-31 10:20:54,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:54,148 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 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 10:20:54,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-31 10:20:54,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-31 10:20:54,355 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:54,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:54,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1560543533, now seen corresponding path program 8 times [2022-01-31 10:20:54,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:54,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774265635] [2022-01-31 10:20:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:54,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:54,364 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:54,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376117492] [2022-01-31 10:20:54,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:20:54,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:54,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:54,365 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:20:54,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-31 10:20:54,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:20:54,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:20:54,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 121 conjunts are in the unsatisfiable core [2022-01-31 10:20:54,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:55,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 61 treesize of output 56 [2022-01-31 10:20:55,045 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 19 treesize of output 18 [2022-01-31 10:20:55,051 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 21 treesize of output 20 [2022-01-31 10:20:55,100 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 82 treesize of output 75 [2022-01-31 10:20:55,114 INFO L353 Elim1Store]: treesize reduction 160, result has 19.6 percent of original size [2022-01-31 10:20:55,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 100 [2022-01-31 10:20:55,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,128 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 7 [2022-01-31 10:20:55,208 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 94 treesize of output 85 [2022-01-31 10:20:55,237 INFO L353 Elim1Store]: treesize reduction 293, result has 16.8 percent of original size [2022-01-31 10:20:55,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 84 treesize of output 123 [2022-01-31 10:20:55,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 22 [2022-01-31 10:20:55,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 86 treesize of output 75 [2022-01-31 10:20:55,425 INFO L353 Elim1Store]: treesize reduction 284, result has 12.1 percent of original size [2022-01-31 10:20:55,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 74 treesize of output 106 [2022-01-31 10:20:55,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 26 [2022-01-31 10:20:55,568 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 101 treesize of output 88 [2022-01-31 10:20:55,625 INFO L353 Elim1Store]: treesize reduction 460, result has 12.4 percent of original size [2022-01-31 10:20:55,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 87 treesize of output 135 [2022-01-31 10:20:55,643 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:20:55,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 44 [2022-01-31 10:20:55,780 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 113 treesize of output 98 [2022-01-31 10:20:55,869 INFO L353 Elim1Store]: treesize reduction 630, result has 12.9 percent of original size [2022-01-31 10:20:55,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 97 treesize of output 162 [2022-01-31 10:20:55,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:55,888 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 39 [2022-01-31 10:20:56,126 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 139 treesize of output 122 [2022-01-31 10:20:56,249 INFO L353 Elim1Store]: treesize reduction 972, result has 12.0 percent of original size [2022-01-31 10:20:56,249 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 121 treesize of output 209 [2022-01-31 10:20:56,278 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:20:56,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 76 [2022-01-31 10:20:56,479 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 158 treesize of output 139 [2022-01-31 10:20:56,644 INFO L353 Elim1Store]: treesize reduction 1276, result has 11.6 percent of original size [2022-01-31 10:20:56,644 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 138 treesize of output 246 [2022-01-31 10:20:56,675 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:20:56,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:56,724 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 83 [2022-01-31 10:20:56,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 144 treesize of output 123 [2022-01-31 10:20:57,102 INFO L353 Elim1Store]: treesize reduction 1153, result has 11.9 percent of original size [2022-01-31 10:20:57,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 122 treesize of output 227 [2022-01-31 10:20:57,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:57,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 54 [2022-01-31 10:22:22,732 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 198 treesize of output 171 [2022-01-31 10:22:23,296 INFO L353 Elim1Store]: treesize reduction 1688, result has 18.5 percent of original size [2022-01-31 10:22:23,296 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 64 case distinctions, treesize of input 170 treesize of output 468 [2022-01-31 10:22:25,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,932 INFO L353 Elim1Store]: treesize reduction 256, result has 46.8 percent of original size [2022-01-31 10:22:25,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 19 case distinctions, treesize of input 383 treesize of output 517 [2022-01-31 10:22:28,761 INFO L353 Elim1Store]: treesize reduction 819, result has 0.1 percent of original size [2022-01-31 10:22:28,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 150 treesize of output 48 [2022-01-31 10:22:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 8 proven. 222 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:22:28,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:25:18,987 WARN L228 SmtUtils]: Spent 5.16s on a formula simplification that was a NOOP. DAG size: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 10:26:11,542 WARN L228 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 10:26:11,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 56 treesize of output 52 [2022-01-31 10:26:12,628 INFO L244 Elim1Store]: Index analysis took 585 ms [2022-01-31 10:26:13,956 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:26:13,956 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 59 [2022-01-31 10:26:14,413 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 17 treesize of output 4 [2022-01-31 10:26:15,823 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 19 treesize of output 4 [2022-01-31 10:31:07,213 WARN L228 SmtUtils]: Spent 4.77m on a formula simplification. DAG size of input: 598 DAG size of output: 250 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-31 10:31:07,215 INFO L353 Elim1Store]: treesize reduction 1904, result has 33.2 percent of original size [2022-01-31 10:31:07,292 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 5929452638609110949 treesize of output 5929452638609111865