/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/array27_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 10:20:29,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 10:20:29,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 10:20:29,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 10:20:29,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 10:20:29,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 10:20:29,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 10:20:29,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 10:20:29,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 10:20:29,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 10:20:29,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 10:20:29,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 10:20:29,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 10:20:29,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 10:20:29,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 10:20:29,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 10:20:29,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 10:20:29,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 10:20:29,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 10:20:29,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 10:20:29,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 10:20:29,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 10:20:29,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 10:20:29,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 10:20:29,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 10:20:29,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 10:20:29,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 10:20:29,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 10:20:29,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 10:20:29,273 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 10:20:29,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 10:20:29,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 10:20:29,275 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 10:20:29,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 10:20:29,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 10:20:29,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 10:20:29,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 10:20:29,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 10:20:29,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 10:20:29,276 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 10:20:29,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 10:20:29,277 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 10:20:29,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 10:20:29,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 10:20:29,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 10:20:29,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 10:20:29,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 10:20:29,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:20:29,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 10:20:29,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 10:20:29,278 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 10:20:29,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 10:20:29,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 10:20:29,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 10:20:29,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 10:20:29,560 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 10:20:29,561 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 10:20:29,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array27_pattern.c [2022-01-31 10:20:29,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e28439c/98b9abc7e1fa4921b0eb80bb0831238f/FLAG2b252f559 [2022-01-31 10:20:30,006 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 10:20:30,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array27_pattern.c [2022-01-31 10:20:30,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e28439c/98b9abc7e1fa4921b0eb80bb0831238f/FLAG2b252f559 [2022-01-31 10:20:30,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e28439c/98b9abc7e1fa4921b0eb80bb0831238f [2022-01-31 10:20:30,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 10:20:30,036 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 10:20:30,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 10:20:30,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 10:20:30,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 10:20:30,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:20:30" (1/1) ... [2022-01-31 10:20:30,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a9e6f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:30, skipping insertion in model container [2022-01-31 10:20:30,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:20:30" (1/1) ... [2022-01-31 10:20:30,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 10:20:30,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 10:20:30,183 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/array27_pattern.c[1253,1266] [2022-01-31 10:20:30,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:20:30,200 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 10:20:30,217 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/array27_pattern.c[1253,1266] [2022-01-31 10:20:30,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:20:30,236 INFO L208 MainTranslator]: Completed translation [2022-01-31 10:20:30,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:30 WrapperNode [2022-01-31 10:20:30,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 10:20:30,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 10:20:30,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 10:20:30,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 10:20:30,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:30" (1/1) ... [2022-01-31 10:20:30,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:30" (1/1) ... [2022-01-31 10:20:30,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:30" (1/1) ... [2022-01-31 10:20:30,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:30" (1/1) ... [2022-01-31 10:20:30,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:30" (1/1) ... [2022-01-31 10:20:30,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:30" (1/1) ... [2022-01-31 10:20:30,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:30" (1/1) ... [2022-01-31 10:20:30,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 10:20:30,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 10:20:30,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 10:20:30,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 10:20:30,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:30" (1/1) ... [2022-01-31 10:20:30,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:20:30,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:30,315 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 10:20:30,339 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 10:20:30,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 10:20:30,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 10:20:30,352 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 10:20:30,352 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 10:20:30,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 10:20:30,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 10:20:30,353 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 10:20:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 10:20:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 10:20:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 10:20:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 10:20:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 10:20:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 10:20:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 10:20:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 10:20:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 10:20:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 10:20:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 10:20:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 10:20:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 10:20:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 10:20:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 10:20:30,417 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 10:20:30,419 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 10:20:30,614 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 10:20:30,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 10:20:30,619 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-31 10:20:30,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:20:30 BoogieIcfgContainer [2022-01-31 10:20:30,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 10:20:30,622 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 10:20:30,622 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 10:20:30,623 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 10:20:30,636 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:20:30" (1/1) ... [2022-01-31 10:20:30,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:20:30 BasicIcfg [2022-01-31 10:20:30,667 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 10:20:30,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 10:20:30,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 10:20:30,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 10:20:30,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:20:30" (1/4) ... [2022-01-31 10:20:30,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5553d6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:20:30, skipping insertion in model container [2022-01-31 10:20:30,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:20:30" (2/4) ... [2022-01-31 10:20:30,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5553d6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:20:30, skipping insertion in model container [2022-01-31 10:20:30,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:20:30" (3/4) ... [2022-01-31 10:20:30,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5553d6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:20:30, skipping insertion in model container [2022-01-31 10:20:30,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:20:30" (4/4) ... [2022-01-31 10:20:30,674 INFO L111 eAbstractionObserver]: Analyzing ICFG array27_pattern.cJordan [2022-01-31 10:20:30,678 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 10:20:30,678 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 10:20:30,720 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 10:20:30,725 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 10:20:30,727 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 10:20:30,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 10:20:30,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 10:20:30,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:30,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:20:30,756 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:30,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:30,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1860146265, now seen corresponding path program 1 times [2022-01-31 10:20:30,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:30,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000216497] [2022-01-31 10:20:30,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:30,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:30,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:20:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:30,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 10:20:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:30,973 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 10:20:30,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:30,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000216497] [2022-01-31 10:20:30,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000216497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:20:30,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:20:30,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 10:20:30,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219739977] [2022-01-31 10:20:30,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:20:30,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 10:20:30,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:31,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 10:20:31,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:20:31,009 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 10:20:31,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:31,095 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-01-31 10:20:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 10:20:31,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 19 [2022-01-31 10:20:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:31,104 INFO L225 Difference]: With dead ends: 34 [2022-01-31 10:20:31,104 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 10:20:31,105 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 10:20:31,108 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:31,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:20:31,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 10:20:31,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-31 10:20:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:20:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-01-31 10:20:31,138 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 19 [2022-01-31 10:20:31,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:31,139 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-01-31 10:20:31,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 10:20:31,139 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-01-31 10:20:31,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 10:20:31,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:31,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:20:31,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 10:20:31,141 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:31,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:31,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1526296874, now seen corresponding path program 1 times [2022-01-31 10:20:31,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:31,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014948677] [2022-01-31 10:20:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:31,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:31,167 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:31,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515078344] [2022-01-31 10:20:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:31,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:31,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:31,169 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 10:20:31,170 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 10:20:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:31,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 10:20:31,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:31,316 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 10:20:31,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:20:31,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:31,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014948677] [2022-01-31 10:20:31,317 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:31,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515078344] [2022-01-31 10:20:31,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515078344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:20:31,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:20:31,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 10:20:31,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674744195] [2022-01-31 10:20:31,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:20:31,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 10:20:31,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:31,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 10:20:31,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 10:20:31,320 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 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 10:20:31,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:31,381 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-01-31 10:20:31,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 10:20:31,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 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 19 [2022-01-31 10:20:31,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:31,382 INFO L225 Difference]: With dead ends: 36 [2022-01-31 10:20:31,382 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 10:20:31,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-31 10:20:31,384 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 42 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:31,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 54 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:20:31,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 10:20:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2022-01-31 10:20:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:20:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-01-31 10:20:31,389 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 19 [2022-01-31 10:20:31,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:31,389 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-01-31 10:20:31,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 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 10:20:31,390 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-01-31 10:20:31,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-31 10:20:31,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:31,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:20:31,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 10:20:31,617 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 10:20:31,618 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:31,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:31,619 INFO L85 PathProgramCache]: Analyzing trace with hash -357154871, now seen corresponding path program 1 times [2022-01-31 10:20:31,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:31,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257605456] [2022-01-31 10:20:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:31,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:31,632 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:31,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008876241] [2022-01-31 10:20:31,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:31,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:31,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:31,639 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 10:20:31,667 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 10:20:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:31,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 10:20:31,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 10:20:31,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:20:31,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:31,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257605456] [2022-01-31 10:20:31,800 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:31,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008876241] [2022-01-31 10:20:31,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008876241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:20:31,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:20:31,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 10:20:31,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245221018] [2022-01-31 10:20:31,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:20:31,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 10:20:31,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:31,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 10:20:31,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 10:20:31,802 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:31,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:31,855 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-01-31 10:20:31,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 10:20:31,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-01-31 10:20:31,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:31,859 INFO L225 Difference]: With dead ends: 34 [2022-01-31 10:20:31,859 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 10:20:31,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 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 10:20:31,863 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 48 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 10:20:31,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 48 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:20:31,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 10:20:31,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2022-01-31 10:20:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:20:31,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-01-31 10:20:31,870 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 25 [2022-01-31 10:20:31,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:31,872 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-01-31 10:20:31,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:31,872 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-01-31 10:20:31,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 10:20:31,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:31,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:20:31,893 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 10:20:32,085 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 10:20:32,086 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:32,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:32,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1678477151, now seen corresponding path program 1 times [2022-01-31 10:20:32,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:32,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965469413] [2022-01-31 10:20:32,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:32,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:32,103 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:32,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894827917] [2022-01-31 10:20:32,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:32,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:32,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:32,107 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 10:20:32,123 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 10:20:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:32,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-31 10:20:32,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:32,305 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 37 treesize of output 32 [2022-01-31 10:20:32,311 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 8 treesize of output 7 [2022-01-31 10:20:32,322 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 8 treesize of output 7 [2022-01-31 10:20:32,465 INFO L353 Elim1Store]: treesize reduction 54, result has 11.5 percent of original size [2022-01-31 10:20:32,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 30 [2022-01-31 10:20:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:20:32,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:33,095 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 10:20:33,117 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:20:33,118 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 10:20:33,151 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 10:20:33,188 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 10:20:33,261 INFO L353 Elim1Store]: treesize reduction 38, result has 47.9 percent of original size [2022-01-31 10:20:33,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 76 [2022-01-31 10:20:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:20:35,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:35,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965469413] [2022-01-31 10:20:35,224 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:35,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894827917] [2022-01-31 10:20:35,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894827917] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:35,225 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:35,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2022-01-31 10:20:35,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146378514] [2022-01-31 10:20:35,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:35,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 10:20:35,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:35,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 10:20:35,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-01-31 10:20:35,227 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:36,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:36,488 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2022-01-31 10:20:36,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 10:20:36,489 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2022-01-31 10:20:36,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:36,491 INFO L225 Difference]: With dead ends: 89 [2022-01-31 10:20:36,491 INFO L226 Difference]: Without dead ends: 85 [2022-01-31 10:20:36,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2022-01-31 10:20:36,492 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 112 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:36,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 131 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 270 Invalid, 0 Unknown, 42 Unchecked, 0.5s Time] [2022-01-31 10:20:36,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-31 10:20:36,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 58. [2022-01-31 10:20:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 51 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:20:36,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2022-01-31 10:20:36,502 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 30 [2022-01-31 10:20:36,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:36,502 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2022-01-31 10:20:36,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:36,503 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2022-01-31 10:20:36,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 10:20:36,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:36,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:20:36,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 10:20:36,728 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 10:20:36,728 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:36,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:36,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2105955968, now seen corresponding path program 1 times [2022-01-31 10:20:36,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:36,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616337676] [2022-01-31 10:20:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:36,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:36,741 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:36,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568694188] [2022-01-31 10:20:36,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:36,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:36,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:36,742 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 10:20:36,749 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 10:20:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:36,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-31 10:20:36,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-31 10:20:36,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:20:36,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:36,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616337676] [2022-01-31 10:20:36,836 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:36,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568694188] [2022-01-31 10:20:36,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568694188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:20:36,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:20:36,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 10:20:36,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620231381] [2022-01-31 10:20:36,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:20:36,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 10:20:36,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:36,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 10:20:36,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-31 10:20:36,839 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:36,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:36,880 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2022-01-31 10:20:36,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 10:20:36,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2022-01-31 10:20:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:36,881 INFO L225 Difference]: With dead ends: 68 [2022-01-31 10:20:36,881 INFO L226 Difference]: Without dead ends: 68 [2022-01-31 10:20:36,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-31 10:20:36,882 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:36,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:20:36,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-31 10:20:36,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2022-01-31 10:20:36,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:20:36,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2022-01-31 10:20:36,888 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 30 [2022-01-31 10:20:36,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:36,889 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2022-01-31 10:20:36,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:36,889 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2022-01-31 10:20:36,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 10:20:36,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:36,890 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-31 10:20:36,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 10:20:37,095 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 10:20:37,096 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:37,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:37,096 INFO L85 PathProgramCache]: Analyzing trace with hash -360945924, now seen corresponding path program 2 times [2022-01-31 10:20:37,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:37,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987670816] [2022-01-31 10:20:37,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:37,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:37,109 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:37,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072740133] [2022-01-31 10:20:37,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:20:37,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:37,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:37,111 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 10:20:37,119 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 10:20:37,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:20:37,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:20:37,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:20:37,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:20:37,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:20:37,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:37,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987670816] [2022-01-31 10:20:37,315 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:37,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072740133] [2022-01-31 10:20:37,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072740133] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:37,315 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:37,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:20:37,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491441794] [2022-01-31 10:20:37,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:37,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:20:37,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:37,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:20:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:20:37,317 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:37,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:37,431 INFO L93 Difference]: Finished difference Result 122 states and 151 transitions. [2022-01-31 10:20:37,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 10:20:37,433 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-01-31 10:20:37,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:37,434 INFO L225 Difference]: With dead ends: 122 [2022-01-31 10:20:37,434 INFO L226 Difference]: Without dead ends: 122 [2022-01-31 10:20:37,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-31 10:20:37,435 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 56 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:37,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 110 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:20:37,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-01-31 10:20:37,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2022-01-31 10:20:37,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 90 states have internal predecessors, (115), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:20:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2022-01-31 10:20:37,443 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 32 [2022-01-31 10:20:37,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:37,443 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2022-01-31 10:20:37,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:37,444 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2022-01-31 10:20:37,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-31 10:20:37,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:37,445 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-31 10:20:37,458 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 10:20:37,649 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 10:20:37,650 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:37,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:37,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1959213215, now seen corresponding path program 3 times [2022-01-31 10:20:37,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:37,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727376062] [2022-01-31 10:20:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:37,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:37,659 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:37,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772920174] [2022-01-31 10:20:37,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:20:37,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:37,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:37,661 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 10:20:37,662 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 10:20:37,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-31 10:20:37,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:20:37,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:20:37,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:37,802 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 10:20:37,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:37,894 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 10:20:37,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:37,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727376062] [2022-01-31 10:20:37,894 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:37,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772920174] [2022-01-31 10:20:37,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772920174] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:37,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:37,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:20:37,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932169281] [2022-01-31 10:20:37,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:37,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:20:37,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:37,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:20:37,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:20:37,896 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:38,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:38,019 INFO L93 Difference]: Finished difference Result 159 states and 196 transitions. [2022-01-31 10:20:38,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 10:20:38,020 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-01-31 10:20:38,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:38,021 INFO L225 Difference]: With dead ends: 159 [2022-01-31 10:20:38,021 INFO L226 Difference]: Without dead ends: 159 [2022-01-31 10:20:38,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-01-31 10:20:38,021 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 55 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:38,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 71 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:20:38,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-01-31 10:20:38,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 92. [2022-01-31 10:20:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.2823529411764707) internal successors, (109), 85 states have internal predecessors, (109), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:20:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 115 transitions. [2022-01-31 10:20:38,035 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 115 transitions. Word has length 35 [2022-01-31 10:20:38,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:38,035 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 115 transitions. [2022-01-31 10:20:38,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:38,035 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 115 transitions. [2022-01-31 10:20:38,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-31 10:20:38,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:38,036 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-31 10:20:38,061 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 10:20:38,237 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 10:20:38,237 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:38,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:38,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1578137938, now seen corresponding path program 1 times [2022-01-31 10:20:38,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:38,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117293437] [2022-01-31 10:20:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:38,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:38,246 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:38,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705535707] [2022-01-31 10:20:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:38,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:38,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:38,250 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 10:20:38,251 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 10:20:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:20:38,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:20:38,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 10:20:38,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 10:20:38,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:38,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117293437] [2022-01-31 10:20:38,473 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:38,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705535707] [2022-01-31 10:20:38,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705535707] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:38,474 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:38,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-31 10:20:38,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127771110] [2022-01-31 10:20:38,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:38,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 10:20:38,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:38,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 10:20:38,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-31 10:20:38,475 INFO L87 Difference]: Start difference. First operand 92 states and 115 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:38,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:38,640 INFO L93 Difference]: Finished difference Result 115 states and 136 transitions. [2022-01-31 10:20:38,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 10:20:38,642 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-01-31 10:20:38,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:38,642 INFO L225 Difference]: With dead ends: 115 [2022-01-31 10:20:38,642 INFO L226 Difference]: Without dead ends: 89 [2022-01-31 10:20:38,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-01-31 10:20:38,643 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 63 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:38,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 74 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:20:38,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-31 10:20:38,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2022-01-31 10:20:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:20:38,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2022-01-31 10:20:38,648 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 36 [2022-01-31 10:20:38,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:38,648 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2022-01-31 10:20:38,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:38,649 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2022-01-31 10:20:38,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 10:20:38,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:38,650 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-31 10:20:38,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-31 10:20:38,863 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 10:20:38,863 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:38,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:38,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1006011372, now seen corresponding path program 2 times [2022-01-31 10:20:38,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:38,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946023951] [2022-01-31 10:20:38,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:38,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:38,875 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:38,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276404332] [2022-01-31 10:20:38,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:20:38,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:38,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:38,877 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 10:20:38,890 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 10:20:38,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:20:38,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:20:38,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:20:38,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-31 10:20:39,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:39,124 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-31 10:20:39,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:39,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946023951] [2022-01-31 10:20:39,125 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:39,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276404332] [2022-01-31 10:20:39,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276404332] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:39,125 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:39,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:20:39,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180031884] [2022-01-31 10:20:39,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:39,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:20:39,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:39,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:20:39,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:20:39,133 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:39,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:39,259 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2022-01-31 10:20:39,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 10:20:39,259 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2022-01-31 10:20:39,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:39,260 INFO L225 Difference]: With dead ends: 90 [2022-01-31 10:20:39,260 INFO L226 Difference]: Without dead ends: 81 [2022-01-31 10:20:39,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-01-31 10:20:39,261 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 36 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:39,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 93 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:20:39,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-31 10:20:39,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 58. [2022-01-31 10:20:39,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:20:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2022-01-31 10:20:39,265 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 39 [2022-01-31 10:20:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:39,266 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2022-01-31 10:20:39,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2022-01-31 10:20:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 10:20:39,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:39,267 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-31 10:20:39,285 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 10:20:39,475 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 10:20:39,476 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:39,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:39,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1188636302, now seen corresponding path program 3 times [2022-01-31 10:20:39,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:39,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926648383] [2022-01-31 10:20:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:39,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:39,484 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:39,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677628793] [2022-01-31 10:20:39,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:20:39,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:39,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:39,486 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 10:20:39,513 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 10:20:39,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-31 10:20:39,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:20:39,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:20:39,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-31 10:20:39,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-31 10:20:39,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:39,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926648383] [2022-01-31 10:20:39,759 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:39,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677628793] [2022-01-31 10:20:39,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677628793] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:39,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:39,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:20:39,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877357969] [2022-01-31 10:20:39,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:39,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:20:39,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:39,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:20:39,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:20:39,761 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:39,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:39,846 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2022-01-31 10:20:39,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 10:20:39,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49 [2022-01-31 10:20:39,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:39,847 INFO L225 Difference]: With dead ends: 63 [2022-01-31 10:20:39,847 INFO L226 Difference]: Without dead ends: 63 [2022-01-31 10:20:39,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-01-31 10:20:39,848 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:39,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 80 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:20:39,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-01-31 10:20:39,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2022-01-31 10:20:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:20:39,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-01-31 10:20:39,856 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 49 [2022-01-31 10:20:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:39,856 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-01-31 10:20:39,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:39,857 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-01-31 10:20:39,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-31 10:20:39,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:39,859 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2022-01-31 10:20:39,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-31 10:20:40,060 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 10:20:40,060 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:40,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:40,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1861045673, now seen corresponding path program 4 times [2022-01-31 10:20:40,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:40,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534100747] [2022-01-31 10:20:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:40,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:40,069 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:40,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756885361] [2022-01-31 10:20:40,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 10:20:40,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:40,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:40,070 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 10:20:40,101 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 10:20:40,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 10:20:40,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:20:40,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 10:20:40,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 10:20:40,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 10:20:40,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:40,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534100747] [2022-01-31 10:20:40,380 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:40,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756885361] [2022-01-31 10:20:40,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756885361] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:40,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:40,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-01-31 10:20:40,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086330903] [2022-01-31 10:20:40,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:40,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 10:20:40,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:40,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 10:20:40,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-31 10:20:40,382 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:20:40,580 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2022-01-31 10:20:40,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 10:20:40,580 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51 [2022-01-31 10:20:40,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:20:40,582 INFO L225 Difference]: With dead ends: 82 [2022-01-31 10:20:40,582 INFO L226 Difference]: Without dead ends: 82 [2022-01-31 10:20:40,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2022-01-31 10:20:40,583 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 82 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:20:40,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 74 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:20:40,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-31 10:20:40,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 61. [2022-01-31 10:20:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 54 states have internal predecessors, (65), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:20:40,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2022-01-31 10:20:40,586 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 51 [2022-01-31 10:20:40,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:20:40,586 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2022-01-31 10:20:40,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:20:40,586 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2022-01-31 10:20:40,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-31 10:20:40,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:20:40,587 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2022-01-31 10:20:40,611 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 10:20:40,803 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 10:20:40,804 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:20:40,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:20:40,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1606309128, now seen corresponding path program 5 times [2022-01-31 10:20:40,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:20:40,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127784558] [2022-01-31 10:20:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:20:40,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:20:40,814 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:20:40,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446636573] [2022-01-31 10:20:40,814 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 10:20:40,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:20:40,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:20:40,815 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 10:20:40,823 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 10:20:41,241 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-01-31 10:20:41,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:20:41,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-31 10:20:41,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:20:41,303 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 10:20:41,307 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 10:20:41,316 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 10:20:41,400 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 81 treesize of output 74 [2022-01-31 10:20:41,420 INFO L353 Elim1Store]: treesize reduction 154, result has 19.4 percent of original size [2022-01-31 10:20:41,420 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 73 treesize of output 98 [2022-01-31 10:20:41,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:41,429 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 37 treesize of output 7 [2022-01-31 10:20:41,662 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 77 treesize of output 68 [2022-01-31 10:20:41,709 INFO L353 Elim1Store]: treesize reduction 174, result has 12.6 percent of original size [2022-01-31 10:20:41,710 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 67 treesize of output 89 [2022-01-31 10:20:41,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:41,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:41,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:41,726 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 44 treesize of output 19 [2022-01-31 10:20:41,878 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 80 treesize of output 69 [2022-01-31 10:20:41,931 INFO L353 Elim1Store]: treesize reduction 256, result has 15.5 percent of original size [2022-01-31 10:20:41,931 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 68 treesize of output 104 [2022-01-31 10:20:41,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:41,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:41,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:41,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:41,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:41,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:41,949 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 51 treesize of output 26 [2022-01-31 10:20:42,781 INFO L353 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2022-01-31 10:20:42,781 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 110 treesize of output 37 [2022-01-31 10:20:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:20:42,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:20:46,830 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 10:20:46,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:20:46,843 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:20:46,843 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 61 [2022-01-31 10:20:46,854 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-01-31 10:20:46,876 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 10:20:46,897 INFO L353 Elim1Store]: treesize reduction 51, result has 7.3 percent of original size [2022-01-31 10:20:46,898 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 6535 treesize of output 6428 [2022-01-31 10:20:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:20:47,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:20:47,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127784558] [2022-01-31 10:20:47,787 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:20:47,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446636573] [2022-01-31 10:20:47,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446636573] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:20:47,787 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:20:47,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 29] total 51 [2022-01-31 10:20:47,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439839853] [2022-01-31 10:20:47,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:20:47,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 10:20:47,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:20:47,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 10:20:47,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=2060, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 10:20:47,790 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 50 states have internal predecessors, (81), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:17,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:22:17,287 INFO L93 Difference]: Finished difference Result 222 states and 281 transitions. [2022-01-31 10:22:17,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-31 10:22:17,287 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 50 states have internal predecessors, (81), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51 [2022-01-31 10:22:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:22:17,288 INFO L225 Difference]: With dead ends: 222 [2022-01-31 10:22:17,289 INFO L226 Difference]: Without dead ends: 218 [2022-01-31 10:22:17,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7324 ImplicationChecksByTransitivity, 82.8s TimeCoverageRelationStatistics Valid=3499, Invalid=17381, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 10:22:17,295 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 227 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 227 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-01-31 10:22:17,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 243 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 1734 Invalid, 0 Unknown, 227 Unchecked, 10.4s Time] [2022-01-31 10:22:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-01-31 10:22:17,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 150. [2022-01-31 10:22:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 143 states have (on average 1.2727272727272727) internal successors, (182), 143 states have internal predecessors, (182), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:22:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 188 transitions. [2022-01-31 10:22:17,301 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 188 transitions. Word has length 51 [2022-01-31 10:22:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:22:17,301 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 188 transitions. [2022-01-31 10:22:17,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 50 states have internal predecessors, (81), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 188 transitions. [2022-01-31 10:22:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-31 10:22:17,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:22:17,302 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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] [2022-01-31 10:22:17,328 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 10:22:17,526 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 10:22:17,526 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:22:17,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:22:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash -482294365, now seen corresponding path program 6 times [2022-01-31 10:22:17,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:22:17,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407815948] [2022-01-31 10:22:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:22:17,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:22:17,534 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:22:17,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245417704] [2022-01-31 10:22:17,535 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 10:22:17,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:22:17,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:22:17,536 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 10:22:17,551 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 10:22:17,663 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-31 10:22:17,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:22:17,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-31 10:22:17,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:22:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 10:22:17,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:22:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 17 proven. 34 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 10:22:17,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:22:17,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407815948] [2022-01-31 10:22:17,920 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:22:17,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245417704] [2022-01-31 10:22:17,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245417704] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:22:17,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:22:17,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-01-31 10:22:17,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464860869] [2022-01-31 10:22:17,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:22:17,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 10:22:17,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:22:17,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 10:22:17,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-01-31 10:22:17,922 INFO L87 Difference]: Start difference. First operand 150 states and 188 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:18,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:22:18,202 INFO L93 Difference]: Finished difference Result 360 states and 443 transitions. [2022-01-31 10:22:18,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 10:22:18,202 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2022-01-31 10:22:18,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:22:18,203 INFO L225 Difference]: With dead ends: 360 [2022-01-31 10:22:18,204 INFO L226 Difference]: Without dead ends: 360 [2022-01-31 10:22:18,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=229, Invalid=583, Unknown=0, NotChecked=0, Total=812 [2022-01-31 10:22:18,205 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 64 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:22:18,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 157 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:22:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-01-31 10:22:18,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 236. [2022-01-31 10:22:18,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 229 states have (on average 1.262008733624454) internal successors, (289), 229 states have internal predecessors, (289), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:22:18,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 295 transitions. [2022-01-31 10:22:18,213 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 295 transitions. Word has length 53 [2022-01-31 10:22:18,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:22:18,213 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 295 transitions. [2022-01-31 10:22:18,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 295 transitions. [2022-01-31 10:22:18,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 10:22:18,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:22:18,214 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 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] [2022-01-31 10:22:18,233 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 10:22:18,415 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 10:22:18,415 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:22:18,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:22:18,415 INFO L85 PathProgramCache]: Analyzing trace with hash -735257306, now seen corresponding path program 7 times [2022-01-31 10:22:18,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:22:18,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124823520] [2022-01-31 10:22:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:22:18,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:22:18,423 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:22:18,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676551153] [2022-01-31 10:22:18,424 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 10:22:18,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:22:18,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:22:18,425 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 10:22:18,427 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 10:22:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:22:18,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:22:18,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:22:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 23 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-31 10:22:18,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:22:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 23 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-31 10:22:18,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:22:18,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124823520] [2022-01-31 10:22:18,683 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:22:18,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676551153] [2022-01-31 10:22:18,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676551153] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:22:18,683 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:22:18,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-31 10:22:18,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341957834] [2022-01-31 10:22:18,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:22:18,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 10:22:18,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:22:18,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 10:22:18,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-31 10:22:18,684 INFO L87 Difference]: Start difference. First operand 236 states and 295 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:18,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:22:18,852 INFO L93 Difference]: Finished difference Result 426 states and 512 transitions. [2022-01-31 10:22:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 10:22:18,852 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2022-01-31 10:22:18,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:22:18,854 INFO L225 Difference]: With dead ends: 426 [2022-01-31 10:22:18,854 INFO L226 Difference]: Without dead ends: 426 [2022-01-31 10:22:18,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 97 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 10:22:18,855 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 88 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:22:18,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 91 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:22:18,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-01-31 10:22:18,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 280. [2022-01-31 10:22:18,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 273 states have (on average 1.271062271062271) internal successors, (347), 273 states have internal predecessors, (347), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:22:18,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 353 transitions. [2022-01-31 10:22:18,862 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 353 transitions. Word has length 54 [2022-01-31 10:22:18,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:22:18,862 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 353 transitions. [2022-01-31 10:22:18,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 353 transitions. [2022-01-31 10:22:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 10:22:18,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:22:18,863 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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] [2022-01-31 10:22:18,882 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 10:22:19,075 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 10:22:19,075 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:22:19,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:22:19,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1055161593, now seen corresponding path program 8 times [2022-01-31 10:22:19,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:22:19,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879175415] [2022-01-31 10:22:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:22:19,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:22:19,090 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:22:19,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481600435] [2022-01-31 10:22:19,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:22:19,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:22:19,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:22:19,091 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 10:22:19,125 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 10:22:19,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:22:19,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:22:19,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:22:19,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:22:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 29 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-31 10:22:19,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:22:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-31 10:22:19,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:22:19,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879175415] [2022-01-31 10:22:19,406 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:22:19,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481600435] [2022-01-31 10:22:19,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481600435] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:22:19,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:22:19,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-31 10:22:19,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587334658] [2022-01-31 10:22:19,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:22:19,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 10:22:19,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:22:19,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 10:22:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-31 10:22:19,408 INFO L87 Difference]: Start difference. First operand 280 states and 353 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:19,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:22:19,618 INFO L93 Difference]: Finished difference Result 309 states and 368 transitions. [2022-01-31 10:22:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 10:22:19,619 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2022-01-31 10:22:19,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:22:19,620 INFO L225 Difference]: With dead ends: 309 [2022-01-31 10:22:19,620 INFO L226 Difference]: Without dead ends: 282 [2022-01-31 10:22:19,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 97 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 10:22:19,621 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 61 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:22:19,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 163 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:22:19,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-31 10:22:19,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 171. [2022-01-31 10:22:19,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 164 states have (on average 1.1768292682926829) internal successors, (193), 164 states have internal predecessors, (193), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:22:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 199 transitions. [2022-01-31 10:22:19,626 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 199 transitions. Word has length 54 [2022-01-31 10:22:19,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:22:19,626 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 199 transitions. [2022-01-31 10:22:19,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 199 transitions. [2022-01-31 10:22:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-31 10:22:19,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:22:19,627 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:22:19,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-31 10:22:19,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:22:19,843 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:22:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:22:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash -956696440, now seen corresponding path program 9 times [2022-01-31 10:22:19,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:22:19,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323398558] [2022-01-31 10:22:19,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:22:19,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:22:19,850 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:22:19,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943657604] [2022-01-31 10:22:19,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:22:19,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:22:19,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:22:19,853 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:22:19,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-31 10:22:19,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-01-31 10:22:19,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:22:19,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-31 10:22:19,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:22:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 114 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-31 10:22:20,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:22:20,287 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 114 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-31 10:22:20,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:22:20,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323398558] [2022-01-31 10:22:20,287 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:22:20,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943657604] [2022-01-31 10:22:20,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943657604] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:22:20,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:22:20,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-01-31 10:22:20,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950932095] [2022-01-31 10:22:20,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:22:20,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 10:22:20,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:22:20,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 10:22:20,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-01-31 10:22:20,288 INFO L87 Difference]: Start difference. First operand 171 states and 199 transitions. Second operand has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:20,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:22:20,750 INFO L93 Difference]: Finished difference Result 293 states and 351 transitions. [2022-01-31 10:22:20,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 10:22:20,751 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 65 [2022-01-31 10:22:20,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:22:20,752 INFO L225 Difference]: With dead ends: 293 [2022-01-31 10:22:20,752 INFO L226 Difference]: Without dead ends: 266 [2022-01-31 10:22:20,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=509, Invalid=1383, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 10:22:20,753 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 87 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:22:20,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 103 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:22:20,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-01-31 10:22:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 219. [2022-01-31 10:22:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 212 states have (on average 1.25) internal successors, (265), 212 states have internal predecessors, (265), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:22:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 271 transitions. [2022-01-31 10:22:20,758 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 271 transitions. Word has length 65 [2022-01-31 10:22:20,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:22:20,759 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 271 transitions. [2022-01-31 10:22:20,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:20,759 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 271 transitions. [2022-01-31 10:22:20,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-31 10:22:20,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:22:20,760 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 5, 4, 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] [2022-01-31 10:22:20,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-31 10:22:20,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-31 10:22:20,971 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:22:20,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:22:20,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1684887435, now seen corresponding path program 10 times [2022-01-31 10:22:20,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:22:20,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151911469] [2022-01-31 10:22:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:22:20,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:22:20,981 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:22:20,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526265183] [2022-01-31 10:22:20,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 10:22:20,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:22:20,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:22:20,983 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:22:20,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-31 10:22:21,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 10:22:21,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:22:21,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:22:21,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:22:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-01-31 10:22:21,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:22:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-01-31 10:22:21,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:22:21,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151911469] [2022-01-31 10:22:21,349 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:22:21,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526265183] [2022-01-31 10:22:21,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526265183] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:22:21,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:22:21,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-31 10:22:21,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402414745] [2022-01-31 10:22:21,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:22:21,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 10:22:21,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:22:21,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 10:22:21,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-31 10:22:21,351 INFO L87 Difference]: Start difference. First operand 219 states and 271 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:22:21,605 INFO L93 Difference]: Finished difference Result 237 states and 290 transitions. [2022-01-31 10:22:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 10:22:21,606 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2022-01-31 10:22:21,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:22:21,607 INFO L225 Difference]: With dead ends: 237 [2022-01-31 10:22:21,607 INFO L226 Difference]: Without dead ends: 237 [2022-01-31 10:22:21,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2022-01-31 10:22:21,607 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 68 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:22:21,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 66 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:22:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-01-31 10:22:21,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 228. [2022-01-31 10:22:21,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 221 states have (on average 1.239819004524887) internal successors, (274), 221 states have internal predecessors, (274), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:22:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 280 transitions. [2022-01-31 10:22:21,612 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 280 transitions. Word has length 73 [2022-01-31 10:22:21,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:22:21,613 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 280 transitions. [2022-01-31 10:22:21,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:21,613 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 280 transitions. [2022-01-31 10:22:21,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-31 10:22:21,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:22:21,614 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 4, 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] [2022-01-31 10:22:21,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-31 10:22:21,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-31 10:22:21,827 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:22:21,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:22:21,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1864517722, now seen corresponding path program 11 times [2022-01-31 10:22:21,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:22:21,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121847300] [2022-01-31 10:22:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:22:21,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:22:21,840 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:22:21,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373272273] [2022-01-31 10:22:21,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 10:22:21,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:22:21,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:22:21,842 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:22:21,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-31 10:22:21,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-01-31 10:22:21,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:22:21,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-31 10:22:21,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:22:22,159 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 105 proven. 77 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-31 10:22:22,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:22:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 103 proven. 79 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-31 10:22:22,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:22:22,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121847300] [2022-01-31 10:22:22,454 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:22:22,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373272273] [2022-01-31 10:22:22,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373272273] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:22:22,454 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:22:22,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-01-31 10:22:22,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760558230] [2022-01-31 10:22:22,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:22:22,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 10:22:22,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:22:22,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 10:22:22,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2022-01-31 10:22:22,455 INFO L87 Difference]: Start difference. First operand 228 states and 280 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 23 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:23,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:22:23,877 INFO L93 Difference]: Finished difference Result 405 states and 494 transitions. [2022-01-31 10:22:23,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 10:22:23,878 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 23 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 82 [2022-01-31 10:22:23,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:22:23,879 INFO L225 Difference]: With dead ends: 405 [2022-01-31 10:22:23,879 INFO L226 Difference]: Without dead ends: 321 [2022-01-31 10:22:23,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1767 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1434, Invalid=4572, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 10:22:23,882 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 151 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 10:22:23,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 116 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 10:22:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-01-31 10:22:23,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 284. [2022-01-31 10:22:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 277 states have (on average 1.2671480144404332) internal successors, (351), 277 states have internal predecessors, (351), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:22:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 357 transitions. [2022-01-31 10:22:23,887 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 357 transitions. Word has length 82 [2022-01-31 10:22:23,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:22:23,888 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 357 transitions. [2022-01-31 10:22:23,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 23 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:23,888 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 357 transitions. [2022-01-31 10:22:23,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-31 10:22:23,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:22:23,889 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 4, 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] [2022-01-31 10:22:23,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-31 10:22:24,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-31 10:22:24,096 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:22:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:22:24,096 INFO L85 PathProgramCache]: Analyzing trace with hash -484578888, now seen corresponding path program 12 times [2022-01-31 10:22:24,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:22:24,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584670553] [2022-01-31 10:22:24,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:22:24,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:22:24,104 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:22:24,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297888140] [2022-01-31 10:22:24,104 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 10:22:24,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:22:24,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:22:24,105 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:22:24,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-31 10:22:24,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-01-31 10:22:24,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:22:24,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-31 10:22:24,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:22:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-01-31 10:22:24,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:22:24,524 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-01-31 10:22:24,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:22:24,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584670553] [2022-01-31 10:22:24,525 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:22:24,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297888140] [2022-01-31 10:22:24,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297888140] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:22:24,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:22:24,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-01-31 10:22:24,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085601087] [2022-01-31 10:22:24,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:22:24,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 10:22:24,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:22:24,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 10:22:24,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 10:22:24,526 INFO L87 Difference]: Start difference. First operand 284 states and 357 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:24,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:22:24,638 INFO L93 Difference]: Finished difference Result 260 states and 313 transitions. [2022-01-31 10:22:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 10:22:24,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 82 [2022-01-31 10:22:24,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:22:24,640 INFO L225 Difference]: With dead ends: 260 [2022-01-31 10:22:24,640 INFO L226 Difference]: Without dead ends: 260 [2022-01-31 10:22:24,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:22:24,641 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 18 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:22:24,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 61 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:22:24,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-01-31 10:22:24,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 229. [2022-01-31 10:22:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 222 states have (on average 1.2252252252252251) internal successors, (272), 222 states have internal predecessors, (272), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:22:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 278 transitions. [2022-01-31 10:22:24,646 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 278 transitions. Word has length 82 [2022-01-31 10:22:24,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:22:24,646 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 278 transitions. [2022-01-31 10:22:24,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:22:24,646 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 278 transitions. [2022-01-31 10:22:24,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-31 10:22:24,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:22:24,647 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 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] [2022-01-31 10:22:24,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-31 10:22:24,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:22:24,848 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:22:24,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:22:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1874728121, now seen corresponding path program 13 times [2022-01-31 10:22:24,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:22:24,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48338622] [2022-01-31 10:22:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:22:24,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:22:24,855 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:22:24,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712979361] [2022-01-31 10:22:24,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 10:22:24,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:22:24,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:22:24,857 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:22:24,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-31 10:22:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:22:25,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 119 conjunts are in the unsatisfiable core [2022-01-31 10:22:25,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:22:25,305 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 10:22:25,308 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 10:22:25,315 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 10:22:25,378 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 79 treesize of output 72 [2022-01-31 10:22:25,394 INFO L353 Elim1Store]: treesize reduction 142, result has 18.9 percent of original size [2022-01-31 10:22:25,395 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 71 treesize of output 94 [2022-01-31 10:22:25,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,404 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 46 treesize of output 20 [2022-01-31 10:22:25,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,445 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 66 treesize of output 25 [2022-01-31 10:22:25,562 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 100 treesize of output 91 [2022-01-31 10:22:25,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:22:25,570 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 137 [2022-01-31 10:22:25,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,595 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 102 treesize of output 42 [2022-01-31 10:22:25,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,626 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 103 treesize of output 46 [2022-01-31 10:22:25,896 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 10:22:25,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 106 [2022-01-31 10:22:25,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:25,961 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 57 treesize of output 28 [2022-01-31 10:22:26,117 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 105 treesize of output 92 [2022-01-31 10:22:26,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 143 [2022-01-31 10:22:26,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,157 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 55 treesize of output 16 [2022-01-31 10:22:26,397 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 115 treesize of output 100 [2022-01-31 10:22:26,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 166 [2022-01-31 10:22:26,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,445 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 85 treesize of output 39 [2022-01-31 10:22:26,776 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 146 treesize of output 129 [2022-01-31 10:22:26,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 219 [2022-01-31 10:22:26,839 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:22:26,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:26,893 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 121 treesize of output 43 [2022-01-31 10:22:27,150 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 157 treesize of output 138 [2022-01-31 10:22:27,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 36 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 244 [2022-01-31 10:22:27,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,271 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 166 treesize of output 76 [2022-01-31 10:22:27,488 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 10:22:27,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 45 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 227 [2022-01-31 10:22:27,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:27,651 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 173 treesize of output 90 [2022-01-31 10:22:30,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:22:30,990 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:22:30,991 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 218 treesize of output 58 [2022-01-31 10:22:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:22:31,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:28:32,262 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 10:28:32,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:28:32,757 INFO L244 Elim1Store]: Index analysis took 148 ms [2022-01-31 10:28:33,074 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:28:33,074 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 61 [2022-01-31 10:28:33,230 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 10:28:33,869 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 10:28:54,681 INFO L353 Elim1Store]: treesize reduction 96, result has 4.0 percent of original size [2022-01-31 10:28:55,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input -2793614400275683170 treesize of output -2793614400275683181