/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/nla-digbench-scaling/ps6-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 00:30:06,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 00:30:06,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 00:30:06,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-15 00:30:06,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-15 00:30:06,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-15 00:30:06,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-15 00:30:06,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-15 00:30:06,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-15 00:30:06,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-15 00:30:06,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-15 00:30:06,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-15 00:30:06,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 00:30:06,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 00:30:06,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 00:30:06,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 00:30:07,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 00:30:07,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 00:30:07,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 00:30:07,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 00:30:07,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 00:30:07,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 00:30:07,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 00:30:07,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 00:30:07,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 00:30:07,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 00:30:07,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 00:30:07,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 00:30:07,029 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-15 00:30:07,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 00:30:07,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 00:30:07,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 00:30:07,042 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 00:30:07,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 00:30:07,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 00:30:07,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 00:30:07,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 00:30:07,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 00:30:07,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 00:30:07,043 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 00:30:07,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 00:30:07,043 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 00:30:07,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 00:30:07,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 00:30:07,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 00:30:07,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 00:30:07,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 00:30:07,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 00:30:07,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 00:30:07,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 00:30:07,044 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-15 00:30:07,044 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 00:30:07,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 00:30:07,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 00:30:07,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 00:30:07,252 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 00:30:07,252 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 00:30:07,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound2.c [2022-02-15 00:30:07,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca770500d/0213c3580d80447c9065f78d75b94f15/FLAG17cd42293 [2022-02-15 00:30:07,591 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 00:30:07,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound2.c [2022-02-15 00:30:07,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca770500d/0213c3580d80447c9065f78d75b94f15/FLAG17cd42293 [2022-02-15 00:30:08,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca770500d/0213c3580d80447c9065f78d75b94f15 [2022-02-15 00:30:08,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 00:30:08,030 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-15 00:30:08,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 00:30:08,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 00:30:08,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 00:30:08,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:30:08" (1/1) ... [2022-02-15 00:30:08,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a5fd25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:30:08, skipping insertion in model container [2022-02-15 00:30:08,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:30:08" (1/1) ... [2022-02-15 00:30:08,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 00:30:08,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 00:30:08,189 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound2.c[458,471] [2022-02-15 00:30:08,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 00:30:08,218 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 00:30:08,231 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound2.c[458,471] [2022-02-15 00:30:08,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 00:30:08,252 INFO L208 MainTranslator]: Completed translation [2022-02-15 00:30:08,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:30:08 WrapperNode [2022-02-15 00:30:08,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 00:30:08,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 00:30:08,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 00:30:08,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 00:30:08,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:30:08" (1/1) ... [2022-02-15 00:30:08,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:30:08" (1/1) ... [2022-02-15 00:30:08,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:30:08" (1/1) ... [2022-02-15 00:30:08,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:30:08" (1/1) ... [2022-02-15 00:30:08,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:30:08" (1/1) ... [2022-02-15 00:30:08,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:30:08" (1/1) ... [2022-02-15 00:30:08,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:30:08" (1/1) ... [2022-02-15 00:30:08,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 00:30:08,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 00:30:08,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 00:30:08,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 00:30:08,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:30:08" (1/1) ... [2022-02-15 00:30:08,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 00:30:08,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:30:08,308 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) [2022-02-15 00:30:08,326 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 [2022-02-15 00:30:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 00:30:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 00:30:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 00:30:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-15 00:30:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-15 00:30:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 00:30:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 00:30:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 00:30:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 00:30:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 00:30:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-02-15 00:30:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-15 00:30:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-15 00:30:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 00:30:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 00:30:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 00:30:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 00:30:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 00:30:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 00:30:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 00:30:08,384 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 00:30:08,385 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 00:30:08,511 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 00:30:08,515 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 00:30:08,516 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 00:30:08,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:30:08 BoogieIcfgContainer [2022-02-15 00:30:08,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 00:30:08,517 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-15 00:30:08,517 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-15 00:30:08,518 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-15 00:30:08,520 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:30:08" (1/1) ... [2022-02-15 00:30:08,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.02 12:30:08 BasicIcfg [2022-02-15 00:30:08,549 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-15 00:30:08,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 00:30:08,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 00:30:08,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 00:30:08,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:30:08" (1/4) ... [2022-02-15 00:30:08,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d73334f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:30:08, skipping insertion in model container [2022-02-15 00:30:08,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:30:08" (2/4) ... [2022-02-15 00:30:08,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d73334f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:30:08, skipping insertion in model container [2022-02-15 00:30:08,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:30:08" (3/4) ... [2022-02-15 00:30:08,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d73334f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:30:08, skipping insertion in model container [2022-02-15 00:30:08,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.02 12:30:08" (4/4) ... [2022-02-15 00:30:08,554 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound2.cJordan [2022-02-15 00:30:08,557 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-15 00:30:08,557 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 00:30:08,588 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 00:30:08,592 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 [2022-02-15 00:30:08,592 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 00:30:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 00:30:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-15 00:30:08,613 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:30:08,614 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:30:08,614 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:30:08,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:30:08,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1187991702, now seen corresponding path program 1 times [2022-02-15 00:30:08,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:30:08,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970468936] [2022-02-15 00:30:08,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:30:08,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:30:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:30:08,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:30:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:30:08,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:30:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:30:08,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-15 00:30:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:30:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-15 00:30:08,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:30:08,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970468936] [2022-02-15 00:30:08,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970468936] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:30:08,797 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:30:08,797 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 00:30:08,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064164898] [2022-02-15 00:30:08,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:30:08,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 00:30:08,801 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:30:08,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 00:30:08,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 00:30:08,824 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-15 00:30:08,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:30:08,878 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-02-15 00:30:08,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 00:30:08,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-02-15 00:30:08,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:30:08,884 INFO L225 Difference]: With dead ends: 29 [2022-02-15 00:30:08,884 INFO L226 Difference]: Without dead ends: 24 [2022-02-15 00:30:08,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 00:30:08,888 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:30:08,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 00:30:08,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-15 00:30:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-02-15 00:30:08,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 00:30:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-02-15 00:30:08,917 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2022-02-15 00:30:08,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:30:08,917 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-02-15 00:30:08,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-15 00:30:08,918 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-02-15 00:30:08,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-15 00:30:08,919 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:30:08,919 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:30:08,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 00:30:08,920 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:30:08,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:30:08,921 INFO L85 PathProgramCache]: Analyzing trace with hash 793962506, now seen corresponding path program 1 times [2022-02-15 00:30:08,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:30:08,922 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529791235] [2022-02-15 00:30:08,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:30:08,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:30:08,947 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:30:08,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964973716] [2022-02-15 00:30:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:30:08,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:30:08,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:30:08,949 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) [2022-02-15 00:30:08,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-15 00:30:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:30:08,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-15 00:30:08,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:30:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-15 00:30:09,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 00:30:09,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:30:09,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529791235] [2022-02-15 00:30:09,064 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:30:09,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964973716] [2022-02-15 00:30:09,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964973716] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:30:09,064 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:30:09,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 00:30:09,065 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273020342] [2022-02-15 00:30:09,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:30:09,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 00:30:09,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:30:09,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 00:30:09,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:30:09,066 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-15 00:30:09,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:30:09,111 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-02-15 00:30:09,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 00:30:09,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2022-02-15 00:30:09,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:30:09,112 INFO L225 Difference]: With dead ends: 33 [2022-02-15 00:30:09,113 INFO L226 Difference]: Without dead ends: 31 [2022-02-15 00:30:09,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 00:30:09,114 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:30:09,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 91 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 00:30:09,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-15 00:30:09,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-02-15 00:30:09,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 00:30:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-02-15 00:30:09,119 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2022-02-15 00:30:09,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:30:09,119 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-02-15 00:30:09,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-15 00:30:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-02-15 00:30:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 00:30:09,120 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:30:09,120 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:30:09,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-15 00:30:09,331 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 [2022-02-15 00:30:09,332 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:30:09,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:30:09,332 INFO L85 PathProgramCache]: Analyzing trace with hash -503871754, now seen corresponding path program 1 times [2022-02-15 00:30:09,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:30:09,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711757991] [2022-02-15 00:30:09,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:30:09,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:30:09,341 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:30:09,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328037046] [2022-02-15 00:30:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:30:09,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:30:09,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:30:09,346 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) [2022-02-15 00:30:09,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-15 00:30:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:30:09,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 00:30:09,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:30:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-15 00:30:09,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 00:30:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-02-15 00:30:11,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:30:11,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711757991] [2022-02-15 00:30:11,930 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:30:11,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328037046] [2022-02-15 00:30:11,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328037046] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 00:30:11,930 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 00:30:11,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-02-15 00:30:11,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191814251] [2022-02-15 00:30:11,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:30:11,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 00:30:11,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:30:11,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 00:30:11,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=28, Unknown=1, NotChecked=0, Total=42 [2022-02-15 00:30:11,931 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-15 00:30:11,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:30:11,977 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-02-15 00:30:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 00:30:11,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-02-15 00:30:11,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:30:11,980 INFO L225 Difference]: With dead ends: 35 [2022-02-15 00:30:11,981 INFO L226 Difference]: Without dead ends: 33 [2022-02-15 00:30:11,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56 [2022-02-15 00:30:11,983 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:30:11,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 81 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 00:30:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-15 00:30:11,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-02-15 00:30:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 00:30:11,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-02-15 00:30:11,998 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2022-02-15 00:30:11,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:30:11,998 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-02-15 00:30:11,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-15 00:30:11,999 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-02-15 00:30:11,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-15 00:30:11,999 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:30:12,000 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2022-02-15 00:30:12,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-15 00:30:12,204 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 [2022-02-15 00:30:12,206 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:30:12,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:30:12,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1285656823, now seen corresponding path program 1 times [2022-02-15 00:30:12,209 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:30:12,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013365726] [2022-02-15 00:30:12,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:30:12,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:30:12,228 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:30:12,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906468156] [2022-02-15 00:30:12,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:30:12,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:30:12,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:30:12,236 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) [2022-02-15 00:30:12,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-15 00:30:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:30:12,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-15 00:30:12,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:30:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-15 00:30:12,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 00:30:12,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:30:12,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013365726] [2022-02-15 00:30:12,656 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:30:12,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906468156] [2022-02-15 00:30:12,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906468156] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 00:30:12,657 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-15 00:30:12,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-02-15 00:30:12,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398161677] [2022-02-15 00:30:12,657 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-15 00:30:12,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 00:30:12,658 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:30:12,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 00:30:12,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-15 00:30:12,659 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-02-15 00:30:12,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:30:12,734 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-02-15 00:30:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 00:30:12,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2022-02-15 00:30:12,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:30:12,735 INFO L225 Difference]: With dead ends: 40 [2022-02-15 00:30:12,735 INFO L226 Difference]: Without dead ends: 36 [2022-02-15 00:30:12,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:30:12,736 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:30:12,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 155 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 00:30:12,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-02-15 00:30:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-02-15 00:30:12,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 00:30:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-02-15 00:30:12,739 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 40 [2022-02-15 00:30:12,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:30:12,739 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-02-15 00:30:12,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-02-15 00:30:12,740 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-02-15 00:30:12,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 00:30:12,740 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:30:12,740 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:30:12,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-15 00:30:12,947 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 [2022-02-15 00:30:12,948 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:30:12,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:30:12,948 INFO L85 PathProgramCache]: Analyzing trace with hash -542323485, now seen corresponding path program 2 times [2022-02-15 00:30:12,948 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:30:12,948 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658210556] [2022-02-15 00:30:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:30:12,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:30:12,956 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:30:12,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656733073] [2022-02-15 00:30:12,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 00:30:12,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:30:12,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:30:12,958 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) [2022-02-15 00:30:12,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-15 00:30:13,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 00:30:13,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 00:30:13,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-15 00:30:13,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:30:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-15 00:30:13,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 00:30:13,355 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:30:13,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658210556] [2022-02-15 00:30:13,355 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:30:13,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656733073] [2022-02-15 00:30:13,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656733073] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 00:30:13,355 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-15 00:30:13,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-02-15 00:30:13,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877836074] [2022-02-15 00:30:13,356 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-15 00:30:13,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 00:30:13,356 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:30:13,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 00:30:13,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-15 00:30:13,357 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-02-15 00:30:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:30:13,424 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-02-15 00:30:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:30:13,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 47 [2022-02-15 00:30:13,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:30:13,425 INFO L225 Difference]: With dead ends: 43 [2022-02-15 00:30:13,425 INFO L226 Difference]: Without dead ends: 39 [2022-02-15 00:30:13,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:30:13,426 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:30:13,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 195 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 00:30:13,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-15 00:30:13,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-02-15 00:30:13,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-15 00:30:13,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-02-15 00:30:13,429 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 47 [2022-02-15 00:30:13,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:30:13,429 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-02-15 00:30:13,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-02-15 00:30:13,430 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-02-15 00:30:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-15 00:30:13,430 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:30:13,430 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:30:13,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-15 00:30:13,634 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 [2022-02-15 00:30:13,635 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:30:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:30:13,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2094100617, now seen corresponding path program 3 times [2022-02-15 00:30:13,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:30:13,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982697602] [2022-02-15 00:30:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:30:13,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:30:13,643 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:30:13,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280390432] [2022-02-15 00:30:13,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 00:30:13,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:30:13,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:30:13,644 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) [2022-02-15 00:30:13,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-15 00:30:13,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-15 00:30:13,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 00:30:13,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-15 00:30:13,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:30:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-02-15 00:30:13,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 00:30:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-02-15 00:30:14,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:30:14,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982697602] [2022-02-15 00:30:14,058 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:30:14,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280390432] [2022-02-15 00:30:14,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280390432] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 00:30:14,058 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-15 00:30:14,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-02-15 00:30:14,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065239465] [2022-02-15 00:30:14,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-15 00:30:14,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 00:30:14,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:30:14,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 00:30:14,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:30:14,060 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-02-15 00:30:14,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:30:14,107 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-02-15 00:30:14,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 00:30:14,107 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 54 [2022-02-15 00:30:14,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:30:14,108 INFO L225 Difference]: With dead ends: 32 [2022-02-15 00:30:14,108 INFO L226 Difference]: Without dead ends: 0 [2022-02-15 00:30:14,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-15 00:30:14,109 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:30:14,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 00:30:14,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-15 00:30:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-15 00:30:14,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 00:30:14,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-15 00:30:14,109 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2022-02-15 00:30:14,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:30:14,110 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-15 00:30:14,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-02-15 00:30:14,110 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-15 00:30:14,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-15 00:30:14,111 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-15 00:30:14,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-15 00:30:14,327 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 [2022-02-15 00:30:14,330 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-02-15 00:30:14,331 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 00:30:14,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:30:14 BasicIcfg [2022-02-15 00:30:14,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 00:30:14,333 INFO L158 Benchmark]: Toolchain (without parser) took 6302.95ms. Allocated memory was 183.5MB in the beginning and 234.9MB in the end (delta: 51.4MB). Free memory was 135.4MB in the beginning and 200.6MB in the end (delta: -65.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 00:30:14,333 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 183.5MB. Free memory was 151.3MB in the beginning and 151.1MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 00:30:14,333 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.86ms. Allocated memory is still 183.5MB. Free memory was 135.2MB in the beginning and 160.1MB in the end (delta: -24.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-15 00:30:14,333 INFO L158 Benchmark]: Boogie Preprocessor took 32.77ms. Allocated memory is still 183.5MB. Free memory was 160.1MB in the beginning and 158.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 00:30:14,333 INFO L158 Benchmark]: RCFGBuilder took 230.05ms. Allocated memory is still 183.5MB. Free memory was 158.6MB in the beginning and 148.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-15 00:30:14,333 INFO L158 Benchmark]: IcfgTransformer took 31.37ms. Allocated memory is still 183.5MB. Free memory was 148.1MB in the beginning and 147.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 00:30:14,334 INFO L158 Benchmark]: TraceAbstraction took 5782.59ms. Allocated memory was 183.5MB in the beginning and 234.9MB in the end (delta: 51.4MB). Free memory was 146.5MB in the beginning and 200.6MB in the end (delta: -54.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 00:30:14,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 183.5MB. Free memory was 151.3MB in the beginning and 151.1MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 220.86ms. Allocated memory is still 183.5MB. Free memory was 135.2MB in the beginning and 160.1MB in the end (delta: -24.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.77ms. Allocated memory is still 183.5MB. Free memory was 160.1MB in the beginning and 158.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 230.05ms. Allocated memory is still 183.5MB. Free memory was 158.6MB in the beginning and 148.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 31.37ms. Allocated memory is still 183.5MB. Free memory was 148.1MB in the beginning and 147.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 5782.59ms. Allocated memory was 183.5MB in the beginning and 234.9MB in the end (delta: 51.4MB). Free memory was 146.5MB in the beginning and 200.6MB in the end (delta: -54.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 658 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 499 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 187 IncrementalHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 159 mSDtfsCounter, 187 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 275 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=5, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 852 SizeOfPredicates, 7 NumberOfNonLiveVariables, 561 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 218/238 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-15 00:30:14,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...