/usr/bin/java -ea -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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 14:28:15,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 14:28:15,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 14:28:15,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-28 14:28:15,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-28 14:28:15,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-28 14:28:15,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-28 14:28:15,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-28 14:28:15,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-28 14:28:15,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-28 14:28:15,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-28 14:28:15,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-28 14:28:15,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 14:28:15,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 14:28:15,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 14:28:15,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 14:28:15,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 14:28:15,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 14:28:15,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 14:28:15,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 14:28:15,447 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 14:28:15,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 14:28:15,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 14:28:15,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 14:28:15,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 14:28:15,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-28 14:28:15,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-28 14:28:15,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-28 14:28:15,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-28 14:28:15,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-28 14:28:15,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-28 14:28:15,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-28 14:28:15,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-28 14:28:15,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-28 14:28:15,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-28 14:28:15,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-28 14:28:15,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-28 14:28:15,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-28 14:28:15,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-28 14:28:15,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 14:28:15,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 14:28:15,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 14:28:15,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-28 14:28:15,470 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 14:28:15,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 14:28:15,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 14:28:15,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 14:28:15,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 14:28:15,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 14:28:15,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 14:28:15,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 14:28:15,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 14:28:15,473 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 14:28:15,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 14:28:15,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 14:28:15,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 14:28:15,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 14:28:15,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 14:28:15,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 14:28:15,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 14:28:15,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 14:28:15,473 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 14:28:15,473 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 14:28:15,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 14:28:15,474 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-28 14:28:15,474 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 14:28:15,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 14:28:15,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 14:28:15,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 14:28:15,651 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 14:28:15,652 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 14:28:15,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound1.c [2022-04-28 14:28:15,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0154513f8/1da32cb0975649b5a6036a598283f1d4/FLAG01c48814a [2022-04-28 14:28:16,037 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 14:28:16,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound1.c [2022-04-28 14:28:16,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0154513f8/1da32cb0975649b5a6036a598283f1d4/FLAG01c48814a [2022-04-28 14:28:16,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0154513f8/1da32cb0975649b5a6036a598283f1d4 [2022-04-28 14:28:16,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 14:28:16,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 14:28:16,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 14:28:16,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 14:28:16,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 14:28:16,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 02:28:16" (1/1) ... [2022-04-28 14:28:16,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cfa34f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:28:16, skipping insertion in model container [2022-04-28 14:28:16,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 02:28:16" (1/1) ... [2022-04-28 14:28:16,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 14:28:16,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 14:28:16,625 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/ps5-ll_valuebound1.c[458,471] [2022-04-28 14:28:16,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 14:28:16,648 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 14:28:16,656 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/ps5-ll_valuebound1.c[458,471] [2022-04-28 14:28:16,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 14:28:16,670 INFO L208 MainTranslator]: Completed translation [2022-04-28 14:28:16,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:28:16 WrapperNode [2022-04-28 14:28:16,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 14:28:16,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 14:28:16,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 14:28:16,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 14:28:16,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:28:16" (1/1) ... [2022-04-28 14:28:16,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:28:16" (1/1) ... [2022-04-28 14:28:16,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:28:16" (1/1) ... [2022-04-28 14:28:16,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:28:16" (1/1) ... [2022-04-28 14:28:16,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:28:16" (1/1) ... [2022-04-28 14:28:16,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:28:16" (1/1) ... [2022-04-28 14:28:16,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:28:16" (1/1) ... [2022-04-28 14:28:16,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 14:28:16,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 14:28:16,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 14:28:16,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 14:28:16,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:28:16" (1/1) ... [2022-04-28 14:28:16,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 14:28:16,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 14:28:16,711 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) [2022-04-28 14:28:16,713 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 [2022-04-28 14:28:16,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 14:28:16,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 14:28:16,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 14:28:16,738 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 14:28:16,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 14:28:16,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 14:28:16,738 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 14:28:16,738 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 14:28:16,738 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 14:28:16,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 14:28:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-28 14:28:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 14:28:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 14:28:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 14:28:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 14:28:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 14:28:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 14:28:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 14:28:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 14:28:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 14:28:16,784 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 14:28:16,785 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 14:28:16,878 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 14:28:16,883 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 14:28:16,883 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 14:28:16,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 02:28:16 BoogieIcfgContainer [2022-04-28 14:28:16,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 14:28:16,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 14:28:16,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 14:28:16,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 14:28:16,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 02:28:16" (1/3) ... [2022-04-28 14:28:16,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272bf1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 02:28:16, skipping insertion in model container [2022-04-28 14:28:16,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:28:16" (2/3) ... [2022-04-28 14:28:16,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272bf1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 02:28:16, skipping insertion in model container [2022-04-28 14:28:16,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 02:28:16" (3/3) ... [2022-04-28 14:28:16,896 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound1.c [2022-04-28 14:28:16,905 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 14:28:16,906 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 14:28:16,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 14:28:16,970 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3433c100, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2eefe230 [2022-04-28 14:28:16,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 14:28:16,987 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) [2022-04-28 14:28:16,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-28 14:28:16,993 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 14:28:16,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 14:28:16,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 14:28:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 14:28:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1098891495, now seen corresponding path program 1 times [2022-04-28 14:28:17,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 14:28:17,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [633971015] [2022-04-28 14:28:17,025 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 14:28:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1098891495, now seen corresponding path program 2 times [2022-04-28 14:28:17,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 14:28:17,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037073515] [2022-04-28 14:28:17,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 14:28:17,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 14:28:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:28:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 14:28:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:28:17,219 INFO L290 TraceCheckUtils]: 0: Hoare triple {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {32#true} is VALID [2022-04-28 14:28:17,220 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-28 14:28:17,220 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {32#true} {32#true} #63#return; {32#true} is VALID [2022-04-28 14:28:17,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-28 14:28:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:28:17,231 INFO L290 TraceCheckUtils]: 0: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-28 14:28:17,232 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-28 14:28:17,232 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-28 14:28:17,233 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#false} {32#true} #53#return; {33#false} is VALID [2022-04-28 14:28:17,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-28 14:28:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:28:17,251 INFO L290 TraceCheckUtils]: 0: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-28 14:28:17,252 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-28 14:28:17,252 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-28 14:28:17,253 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#false} {33#false} #55#return; {33#false} is VALID [2022-04-28 14:28:17,254 INFO L272 TraceCheckUtils]: 0: Hoare triple {32#true} call ULTIMATE.init(); {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 14:28:17,254 INFO L290 TraceCheckUtils]: 1: Hoare triple {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {32#true} is VALID [2022-04-28 14:28:17,254 INFO L290 TraceCheckUtils]: 2: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-28 14:28:17,254 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {32#true} {32#true} #63#return; {32#true} is VALID [2022-04-28 14:28:17,255 INFO L272 TraceCheckUtils]: 4: Hoare triple {32#true} call #t~ret5 := main(); {32#true} is VALID [2022-04-28 14:28:17,255 INFO L290 TraceCheckUtils]: 5: Hoare triple {32#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {32#true} is VALID [2022-04-28 14:28:17,256 INFO L272 TraceCheckUtils]: 6: Hoare triple {32#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 1 then 1 else 0)); {32#true} is VALID [2022-04-28 14:28:17,256 INFO L290 TraceCheckUtils]: 7: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-28 14:28:17,257 INFO L290 TraceCheckUtils]: 8: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-28 14:28:17,257 INFO L290 TraceCheckUtils]: 9: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-28 14:28:17,257 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {33#false} {32#true} #53#return; {33#false} is VALID [2022-04-28 14:28:17,258 INFO L272 TraceCheckUtils]: 11: Hoare triple {33#false} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {32#true} is VALID [2022-04-28 14:28:17,258 INFO L290 TraceCheckUtils]: 12: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-28 14:28:17,258 INFO L290 TraceCheckUtils]: 13: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-28 14:28:17,258 INFO L290 TraceCheckUtils]: 14: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-28 14:28:17,258 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {33#false} {33#false} #55#return; {33#false} is VALID [2022-04-28 14:28:17,259 INFO L290 TraceCheckUtils]: 16: Hoare triple {33#false} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {33#false} is VALID [2022-04-28 14:28:17,259 INFO L290 TraceCheckUtils]: 17: Hoare triple {33#false} assume false; {33#false} is VALID [2022-04-28 14:28:17,259 INFO L272 TraceCheckUtils]: 18: Hoare triple {33#false} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {33#false} is VALID [2022-04-28 14:28:17,259 INFO L290 TraceCheckUtils]: 19: Hoare triple {33#false} ~cond := #in~cond; {33#false} is VALID [2022-04-28 14:28:17,260 INFO L290 TraceCheckUtils]: 20: Hoare triple {33#false} assume 0 == ~cond; {33#false} is VALID [2022-04-28 14:28:17,260 INFO L290 TraceCheckUtils]: 21: Hoare triple {33#false} assume !false; {33#false} is VALID [2022-04-28 14:28:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 14:28:17,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 14:28:17,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037073515] [2022-04-28 14:28:17,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037073515] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:28:17,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:28:17,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 14:28:17,266 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 14:28:17,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [633971015] [2022-04-28 14:28:17,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [633971015] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:28:17,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:28:17,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 14:28:17,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785702443] [2022-04-28 14:28:17,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 14:28:17,272 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 [2022-04-28 14:28:17,273 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 14:28:17,276 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 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) [2022-04-28 14:28:17,304 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:17,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 14:28:17,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 14:28:17,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 14:28:17,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 14:28:17,332 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) [2022-04-28 14:28:17,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:17,458 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2022-04-28 14:28:17,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 14:28:17,458 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 [2022-04-28 14:28:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 14:28:17,459 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-28 14:28:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2022-04-28 14:28:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-28 14:28:17,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2022-04-28 14:28:17,469 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 69 transitions. [2022-04-28 14:28:17,564 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 69 edges. 69 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:17,570 INFO L225 Difference]: With dead ends: 51 [2022-04-28 14:28:17,570 INFO L226 Difference]: Without dead ends: 24 [2022-04-28 14:28:17,572 INFO L412 NwaCegarLoop]: 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 [2022-04-28 14:28:17,574 INFO L413 NwaCegarLoop]: 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 [2022-04-28 14:28:17,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 14:28:17,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-04-28 14:28:17,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-04-28 14:28:17,593 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 14:28:17,594 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second 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) [2022-04-28 14:28:17,594 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second 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) [2022-04-28 14:28:17,594 INFO L87 Difference]: Start difference. First operand 24 states. Second 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) [2022-04-28 14:28:17,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:17,597 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-04-28 14:28:17,597 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-04-28 14:28:17,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:28:17,598 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:28:17,598 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 24 states. [2022-04-28 14:28:17,598 INFO L87 Difference]: Start difference. First 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) Second operand 24 states. [2022-04-28 14:28:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:17,600 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-04-28 14:28:17,600 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-04-28 14:28:17,601 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:28:17,601 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:28:17,601 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 14:28:17,601 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 14:28:17,601 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) [2022-04-28 14:28:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-04-28 14:28:17,604 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2022-04-28 14:28:17,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 14:28:17,604 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-04-28 14:28:17,604 INFO L496 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) [2022-04-28 14:28:17,604 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 24 states and 27 transitions. [2022-04-28 14:28:17,629 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:17,629 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-04-28 14:28:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-28 14:28:17,630 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 14:28:17,630 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 14:28:17,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 14:28:17,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 14:28:17,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 14:28:17,631 INFO L85 PathProgramCache]: Analyzing trace with hash 769620075, now seen corresponding path program 1 times [2022-04-28 14:28:17,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 14:28:17,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [196035640] [2022-04-28 14:28:17,631 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 14:28:17,631 INFO L85 PathProgramCache]: Analyzing trace with hash 769620075, now seen corresponding path program 2 times [2022-04-28 14:28:17,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 14:28:17,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978274583] [2022-04-28 14:28:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 14:28:17,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 14:28:17,646 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 14:28:17,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805830564] [2022-04-28 14:28:17,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 14:28:17,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:28:17,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 14:28:17,648 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) [2022-04-28 14:28:17,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-28 14:28:17,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 14:28:17,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 14:28:17,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 14:28:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:28:17,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 14:28:17,828 INFO L272 TraceCheckUtils]: 0: Hoare triple {246#true} call ULTIMATE.init(); {246#true} is VALID [2022-04-28 14:28:17,828 INFO L290 TraceCheckUtils]: 1: Hoare triple {246#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {246#true} is VALID [2022-04-28 14:28:17,829 INFO L290 TraceCheckUtils]: 2: Hoare triple {246#true} assume true; {246#true} is VALID [2022-04-28 14:28:17,829 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {246#true} {246#true} #63#return; {246#true} is VALID [2022-04-28 14:28:17,829 INFO L272 TraceCheckUtils]: 4: Hoare triple {246#true} call #t~ret5 := main(); {246#true} is VALID [2022-04-28 14:28:17,829 INFO L290 TraceCheckUtils]: 5: Hoare triple {246#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {246#true} is VALID [2022-04-28 14:28:17,829 INFO L272 TraceCheckUtils]: 6: Hoare triple {246#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 1 then 1 else 0)); {246#true} is VALID [2022-04-28 14:28:17,829 INFO L290 TraceCheckUtils]: 7: Hoare triple {246#true} ~cond := #in~cond; {246#true} is VALID [2022-04-28 14:28:17,830 INFO L290 TraceCheckUtils]: 8: Hoare triple {246#true} assume !(0 == ~cond); {246#true} is VALID [2022-04-28 14:28:17,831 INFO L290 TraceCheckUtils]: 9: Hoare triple {246#true} assume true; {246#true} is VALID [2022-04-28 14:28:17,831 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {246#true} {246#true} #53#return; {246#true} is VALID [2022-04-28 14:28:17,831 INFO L272 TraceCheckUtils]: 11: Hoare triple {246#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {246#true} is VALID [2022-04-28 14:28:17,831 INFO L290 TraceCheckUtils]: 12: Hoare triple {246#true} ~cond := #in~cond; {246#true} is VALID [2022-04-28 14:28:17,831 INFO L290 TraceCheckUtils]: 13: Hoare triple {246#true} assume !(0 == ~cond); {246#true} is VALID [2022-04-28 14:28:17,831 INFO L290 TraceCheckUtils]: 14: Hoare triple {246#true} assume true; {246#true} is VALID [2022-04-28 14:28:17,831 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {246#true} {246#true} #55#return; {246#true} is VALID [2022-04-28 14:28:17,832 INFO L290 TraceCheckUtils]: 16: Hoare triple {246#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {299#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:28:17,832 INFO L290 TraceCheckUtils]: 17: Hoare triple {299#(and (= main_~x~0 0) (= main_~y~0 0))} assume !false; {299#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:28:17,833 INFO L272 TraceCheckUtils]: 18: Hoare triple {299#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {306#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 14:28:17,833 INFO L290 TraceCheckUtils]: 19: Hoare triple {306#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {310#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 14:28:17,834 INFO L290 TraceCheckUtils]: 20: Hoare triple {310#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {247#false} is VALID [2022-04-28 14:28:17,834 INFO L290 TraceCheckUtils]: 21: Hoare triple {247#false} assume !false; {247#false} is VALID [2022-04-28 14:28:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 14:28:17,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 14:28:17,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 14:28:17,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978274583] [2022-04-28 14:28:17,835 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 14:28:17,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805830564] [2022-04-28 14:28:17,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805830564] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:28:17,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:28:17,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 14:28:17,836 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 14:28:17,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [196035640] [2022-04-28 14:28:17,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [196035640] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:28:17,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:28:17,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 14:28:17,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968317813] [2022-04-28 14:28:17,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 14:28:17,837 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 [2022-04-28 14:28:17,837 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 14:28:17,837 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 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) [2022-04-28 14:28:17,850 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:17,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 14:28:17,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 14:28:17,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 14:28:17,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-28 14:28:17,851 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) [2022-04-28 14:28:17,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:17,950 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-04-28 14:28:17,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 14:28:17,951 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 [2022-04-28 14:28:17,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 14:28:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-28 14:28:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-04-28 14:28:17,953 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-28 14:28:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-04-28 14:28:17,955 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 40 transitions. [2022-04-28 14:28:17,982 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:17,983 INFO L225 Difference]: With dead ends: 35 [2022-04-28 14:28:17,983 INFO L226 Difference]: Without dead ends: 31 [2022-04-28 14:28:17,983 INFO L412 NwaCegarLoop]: 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 [2022-04-28 14:28:17,984 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 14:28:17,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 85 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 14:28:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-04-28 14:28:17,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-04-28 14:28:17,993 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 14:28:17,993 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second 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) [2022-04-28 14:28:17,993 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second 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) [2022-04-28 14:28:17,993 INFO L87 Difference]: Start difference. First operand 31 states. Second 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) [2022-04-28 14:28:17,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:17,995 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-04-28 14:28:17,995 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-04-28 14:28:17,995 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:28:17,995 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:28:17,996 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 31 states. [2022-04-28 14:28:17,996 INFO L87 Difference]: Start difference. First 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) Second operand 31 states. [2022-04-28 14:28:17,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:17,997 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-04-28 14:28:17,998 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-04-28 14:28:17,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:28:17,998 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:28:17,998 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 14:28:17,998 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 14:28:17,998 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) [2022-04-28 14:28:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-04-28 14:28:18,000 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2022-04-28 14:28:18,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 14:28:18,000 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-04-28 14:28:18,000 INFO L496 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) [2022-04-28 14:28:18,000 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 31 states and 34 transitions. [2022-04-28 14:28:18,029 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-04-28 14:28:18,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-28 14:28:18,030 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 14:28:18,030 INFO L195 NwaCegarLoop]: 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] [2022-04-28 14:28:18,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-28 14:28:18,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:28:18,238 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 14:28:18,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 14:28:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash 645812411, now seen corresponding path program 1 times [2022-04-28 14:28:18,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 14:28:18,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1843178954] [2022-04-28 14:28:18,239 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 14:28:18,239 INFO L85 PathProgramCache]: Analyzing trace with hash 645812411, now seen corresponding path program 2 times [2022-04-28 14:28:18,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 14:28:18,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303226064] [2022-04-28 14:28:18,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 14:28:18,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 14:28:18,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 14:28:18,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566838585] [2022-04-28 14:28:18,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 14:28:18,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:28:18,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 14:28:18,252 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) [2022-04-28 14:28:18,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-28 14:28:18,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 14:28:18,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 14:28:18,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-28 14:28:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:28:18,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 14:28:18,438 INFO L272 TraceCheckUtils]: 0: Hoare triple {512#true} call ULTIMATE.init(); {512#true} is VALID [2022-04-28 14:28:18,438 INFO L290 TraceCheckUtils]: 1: Hoare triple {512#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {512#true} is VALID [2022-04-28 14:28:18,438 INFO L290 TraceCheckUtils]: 2: Hoare triple {512#true} assume true; {512#true} is VALID [2022-04-28 14:28:18,438 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {512#true} {512#true} #63#return; {512#true} is VALID [2022-04-28 14:28:18,438 INFO L272 TraceCheckUtils]: 4: Hoare triple {512#true} call #t~ret5 := main(); {512#true} is VALID [2022-04-28 14:28:18,439 INFO L290 TraceCheckUtils]: 5: Hoare triple {512#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {512#true} is VALID [2022-04-28 14:28:18,439 INFO L272 TraceCheckUtils]: 6: Hoare triple {512#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 1 then 1 else 0)); {512#true} is VALID [2022-04-28 14:28:18,439 INFO L290 TraceCheckUtils]: 7: Hoare triple {512#true} ~cond := #in~cond; {512#true} is VALID [2022-04-28 14:28:18,439 INFO L290 TraceCheckUtils]: 8: Hoare triple {512#true} assume !(0 == ~cond); {512#true} is VALID [2022-04-28 14:28:18,439 INFO L290 TraceCheckUtils]: 9: Hoare triple {512#true} assume true; {512#true} is VALID [2022-04-28 14:28:18,439 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {512#true} {512#true} #53#return; {512#true} is VALID [2022-04-28 14:28:18,439 INFO L272 TraceCheckUtils]: 11: Hoare triple {512#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {512#true} is VALID [2022-04-28 14:28:18,439 INFO L290 TraceCheckUtils]: 12: Hoare triple {512#true} ~cond := #in~cond; {512#true} is VALID [2022-04-28 14:28:18,439 INFO L290 TraceCheckUtils]: 13: Hoare triple {512#true} assume !(0 == ~cond); {512#true} is VALID [2022-04-28 14:28:18,440 INFO L290 TraceCheckUtils]: 14: Hoare triple {512#true} assume true; {512#true} is VALID [2022-04-28 14:28:18,440 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {512#true} {512#true} #55#return; {512#true} is VALID [2022-04-28 14:28:18,440 INFO L290 TraceCheckUtils]: 16: Hoare triple {512#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {565#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:28:18,440 INFO L290 TraceCheckUtils]: 17: Hoare triple {565#(and (= main_~x~0 0) (= main_~y~0 0))} assume !false; {565#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:28:18,441 INFO L272 TraceCheckUtils]: 18: Hoare triple {565#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {512#true} is VALID [2022-04-28 14:28:18,441 INFO L290 TraceCheckUtils]: 19: Hoare triple {512#true} ~cond := #in~cond; {512#true} is VALID [2022-04-28 14:28:18,441 INFO L290 TraceCheckUtils]: 20: Hoare triple {512#true} assume !(0 == ~cond); {512#true} is VALID [2022-04-28 14:28:18,441 INFO L290 TraceCheckUtils]: 21: Hoare triple {512#true} assume true; {512#true} is VALID [2022-04-28 14:28:18,443 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {512#true} {565#(and (= main_~x~0 0) (= main_~y~0 0))} #57#return; {565#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:28:18,443 INFO L290 TraceCheckUtils]: 23: Hoare triple {565#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {587#(and (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0) (= (+ (- 1) main_~y~0) 0))} is VALID [2022-04-28 14:28:18,444 INFO L290 TraceCheckUtils]: 24: Hoare triple {587#(and (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0) (= (+ (- 1) main_~y~0) 0))} assume !false; {587#(and (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0) (= (+ (- 1) main_~y~0) 0))} is VALID [2022-04-28 14:28:18,444 INFO L272 TraceCheckUtils]: 25: Hoare triple {587#(and (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0) (= (+ (- 1) main_~y~0) 0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {594#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 14:28:18,445 INFO L290 TraceCheckUtils]: 26: Hoare triple {594#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {598#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 14:28:18,445 INFO L290 TraceCheckUtils]: 27: Hoare triple {598#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {513#false} is VALID [2022-04-28 14:28:18,445 INFO L290 TraceCheckUtils]: 28: Hoare triple {513#false} assume !false; {513#false} is VALID [2022-04-28 14:28:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 14:28:18,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 14:28:18,578 INFO L290 TraceCheckUtils]: 28: Hoare triple {513#false} assume !false; {513#false} is VALID [2022-04-28 14:28:18,579 INFO L290 TraceCheckUtils]: 27: Hoare triple {598#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {513#false} is VALID [2022-04-28 14:28:18,579 INFO L290 TraceCheckUtils]: 26: Hoare triple {594#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {598#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 14:28:18,580 INFO L272 TraceCheckUtils]: 25: Hoare triple {614#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {594#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 14:28:18,581 INFO L290 TraceCheckUtils]: 24: Hoare triple {614#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} assume !false; {614#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is VALID [2022-04-28 14:28:20,590 WARN L290 TraceCheckUtils]: 23: Hoare triple {614#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {614#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is UNKNOWN [2022-04-28 14:28:20,591 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {512#true} {614#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} #57#return; {614#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is VALID [2022-04-28 14:28:20,591 INFO L290 TraceCheckUtils]: 21: Hoare triple {512#true} assume true; {512#true} is VALID [2022-04-28 14:28:20,591 INFO L290 TraceCheckUtils]: 20: Hoare triple {512#true} assume !(0 == ~cond); {512#true} is VALID [2022-04-28 14:28:20,591 INFO L290 TraceCheckUtils]: 19: Hoare triple {512#true} ~cond := #in~cond; {512#true} is VALID [2022-04-28 14:28:20,591 INFO L272 TraceCheckUtils]: 18: Hoare triple {614#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {512#true} is VALID [2022-04-28 14:28:20,603 INFO L290 TraceCheckUtils]: 17: Hoare triple {614#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} assume !false; {614#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is VALID [2022-04-28 14:28:20,604 INFO L290 TraceCheckUtils]: 16: Hoare triple {512#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {614#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is VALID [2022-04-28 14:28:20,604 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {512#true} {512#true} #55#return; {512#true} is VALID [2022-04-28 14:28:20,604 INFO L290 TraceCheckUtils]: 14: Hoare triple {512#true} assume true; {512#true} is VALID [2022-04-28 14:28:20,604 INFO L290 TraceCheckUtils]: 13: Hoare triple {512#true} assume !(0 == ~cond); {512#true} is VALID [2022-04-28 14:28:20,605 INFO L290 TraceCheckUtils]: 12: Hoare triple {512#true} ~cond := #in~cond; {512#true} is VALID [2022-04-28 14:28:20,605 INFO L272 TraceCheckUtils]: 11: Hoare triple {512#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {512#true} is VALID [2022-04-28 14:28:20,605 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {512#true} {512#true} #53#return; {512#true} is VALID [2022-04-28 14:28:20,605 INFO L290 TraceCheckUtils]: 9: Hoare triple {512#true} assume true; {512#true} is VALID [2022-04-28 14:28:20,605 INFO L290 TraceCheckUtils]: 8: Hoare triple {512#true} assume !(0 == ~cond); {512#true} is VALID [2022-04-28 14:28:20,605 INFO L290 TraceCheckUtils]: 7: Hoare triple {512#true} ~cond := #in~cond; {512#true} is VALID [2022-04-28 14:28:20,605 INFO L272 TraceCheckUtils]: 6: Hoare triple {512#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 1 then 1 else 0)); {512#true} is VALID [2022-04-28 14:28:20,605 INFO L290 TraceCheckUtils]: 5: Hoare triple {512#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {512#true} is VALID [2022-04-28 14:28:20,606 INFO L272 TraceCheckUtils]: 4: Hoare triple {512#true} call #t~ret5 := main(); {512#true} is VALID [2022-04-28 14:28:20,606 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {512#true} {512#true} #63#return; {512#true} is VALID [2022-04-28 14:28:20,606 INFO L290 TraceCheckUtils]: 2: Hoare triple {512#true} assume true; {512#true} is VALID [2022-04-28 14:28:20,606 INFO L290 TraceCheckUtils]: 1: Hoare triple {512#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {512#true} is VALID [2022-04-28 14:28:20,606 INFO L272 TraceCheckUtils]: 0: Hoare triple {512#true} call ULTIMATE.init(); {512#true} is VALID [2022-04-28 14:28:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-28 14:28:20,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 14:28:20,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303226064] [2022-04-28 14:28:20,606 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 14:28:20,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566838585] [2022-04-28 14:28:20,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566838585] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-28 14:28:20,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-28 14:28:20,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-28 14:28:20,607 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 14:28:20,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1843178954] [2022-04-28 14:28:20,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1843178954] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:28:20,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:28:20,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 14:28:20,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605201065] [2022-04-28 14:28:20,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 14:28:20,608 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 [2022-04-28 14:28:20,608 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 14:28:20,608 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 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) [2022-04-28 14:28:22,684 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 24 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:22,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 14:28:22,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 14:28:22,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 14:28:22,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-28 14:28:22,685 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) [2022-04-28 14:28:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:22,880 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-04-28 14:28:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 14:28:22,881 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 [2022-04-28 14:28:22,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 14:28:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-28 14:28:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2022-04-28 14:28:22,882 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-28 14:28:22,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2022-04-28 14:28:22,883 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 32 transitions. [2022-04-28 14:28:23,276 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:23,277 INFO L225 Difference]: With dead ends: 37 [2022-04-28 14:28:23,277 INFO L226 Difference]: Without dead ends: 33 [2022-04-28 14:28:23,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-28 14:28:23,278 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 14:28:23,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 75 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 14:28:23,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-28 14:28:23,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-04-28 14:28:23,290 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 14:28:23,290 INFO L82 GeneralOperation]: Start isEquivalent. First operand 33 states. Second 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) [2022-04-28 14:28:23,290 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second 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) [2022-04-28 14:28:23,290 INFO L87 Difference]: Start difference. First operand 33 states. Second 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) [2022-04-28 14:28:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:23,292 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-04-28 14:28:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-04-28 14:28:23,292 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:28:23,292 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:28:23,293 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 33 states. [2022-04-28 14:28:23,293 INFO L87 Difference]: Start difference. First 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) Second operand 33 states. [2022-04-28 14:28:23,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:23,294 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-04-28 14:28:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-04-28 14:28:23,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:28:23,295 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:28:23,295 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 14:28:23,295 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 14:28:23,295 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) [2022-04-28 14:28:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-04-28 14:28:23,296 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2022-04-28 14:28:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 14:28:23,296 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-04-28 14:28:23,297 INFO L496 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) [2022-04-28 14:28:23,297 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 35 transitions. [2022-04-28 14:28:23,679 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:23,679 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-04-28 14:28:23,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-28 14:28:23,680 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 14:28:23,681 INFO L195 NwaCegarLoop]: 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] [2022-04-28 14:28:23,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-28 14:28:23,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-28 14:28:23,881 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 14:28:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 14:28:23,882 INFO L85 PathProgramCache]: Analyzing trace with hash 463554397, now seen corresponding path program 1 times [2022-04-28 14:28:23,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 14:28:23,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [434353018] [2022-04-28 14:28:23,882 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 14:28:23,882 INFO L85 PathProgramCache]: Analyzing trace with hash 463554397, now seen corresponding path program 2 times [2022-04-28 14:28:23,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 14:28:23,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011344665] [2022-04-28 14:28:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 14:28:23,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 14:28:23,899 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 14:28:23,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870102498] [2022-04-28 14:28:23,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 14:28:23,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:28:23,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 14:28:23,901 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) [2022-04-28 14:28:23,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-28 14:28:23,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 14:28:23,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 14:28:23,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-28 14:28:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:28:23,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 14:28:24,237 INFO L272 TraceCheckUtils]: 0: Hoare triple {900#true} call ULTIMATE.init(); {900#true} is VALID [2022-04-28 14:28:24,237 INFO L290 TraceCheckUtils]: 1: Hoare triple {900#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {900#true} is VALID [2022-04-28 14:28:24,238 INFO L290 TraceCheckUtils]: 2: Hoare triple {900#true} assume true; {900#true} is VALID [2022-04-28 14:28:24,238 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {900#true} {900#true} #63#return; {900#true} is VALID [2022-04-28 14:28:24,238 INFO L272 TraceCheckUtils]: 4: Hoare triple {900#true} call #t~ret5 := main(); {900#true} is VALID [2022-04-28 14:28:24,238 INFO L290 TraceCheckUtils]: 5: Hoare triple {900#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {900#true} is VALID [2022-04-28 14:28:24,238 INFO L272 TraceCheckUtils]: 6: Hoare triple {900#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 1 then 1 else 0)); {900#true} is VALID [2022-04-28 14:28:24,238 INFO L290 TraceCheckUtils]: 7: Hoare triple {900#true} ~cond := #in~cond; {900#true} is VALID [2022-04-28 14:28:24,238 INFO L290 TraceCheckUtils]: 8: Hoare triple {900#true} assume !(0 == ~cond); {900#true} is VALID [2022-04-28 14:28:24,238 INFO L290 TraceCheckUtils]: 9: Hoare triple {900#true} assume true; {900#true} is VALID [2022-04-28 14:28:24,239 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {900#true} {900#true} #53#return; {900#true} is VALID [2022-04-28 14:28:24,239 INFO L272 TraceCheckUtils]: 11: Hoare triple {900#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {900#true} is VALID [2022-04-28 14:28:24,239 INFO L290 TraceCheckUtils]: 12: Hoare triple {900#true} ~cond := #in~cond; {900#true} is VALID [2022-04-28 14:28:24,239 INFO L290 TraceCheckUtils]: 13: Hoare triple {900#true} assume !(0 == ~cond); {900#true} is VALID [2022-04-28 14:28:24,239 INFO L290 TraceCheckUtils]: 14: Hoare triple {900#true} assume true; {900#true} is VALID [2022-04-28 14:28:24,239 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {900#true} {900#true} #55#return; {900#true} is VALID [2022-04-28 14:28:24,239 INFO L290 TraceCheckUtils]: 16: Hoare triple {900#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {953#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:28:24,240 INFO L290 TraceCheckUtils]: 17: Hoare triple {953#(and (= main_~c~0 0) (= main_~y~0 0))} assume !false; {953#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:28:24,240 INFO L272 TraceCheckUtils]: 18: Hoare triple {953#(and (= main_~c~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {900#true} is VALID [2022-04-28 14:28:24,240 INFO L290 TraceCheckUtils]: 19: Hoare triple {900#true} ~cond := #in~cond; {900#true} is VALID [2022-04-28 14:28:24,240 INFO L290 TraceCheckUtils]: 20: Hoare triple {900#true} assume !(0 == ~cond); {900#true} is VALID [2022-04-28 14:28:24,240 INFO L290 TraceCheckUtils]: 21: Hoare triple {900#true} assume true; {900#true} is VALID [2022-04-28 14:28:24,241 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {900#true} {953#(and (= main_~c~0 0) (= main_~y~0 0))} #57#return; {953#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:28:24,241 INFO L290 TraceCheckUtils]: 23: Hoare triple {953#(and (= main_~c~0 0) (= main_~y~0 0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {975#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} is VALID [2022-04-28 14:28:24,242 INFO L290 TraceCheckUtils]: 24: Hoare triple {975#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} assume !false; {975#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} is VALID [2022-04-28 14:28:24,242 INFO L272 TraceCheckUtils]: 25: Hoare triple {975#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {900#true} is VALID [2022-04-28 14:28:24,242 INFO L290 TraceCheckUtils]: 26: Hoare triple {900#true} ~cond := #in~cond; {900#true} is VALID [2022-04-28 14:28:24,242 INFO L290 TraceCheckUtils]: 27: Hoare triple {900#true} assume !(0 == ~cond); {900#true} is VALID [2022-04-28 14:28:24,242 INFO L290 TraceCheckUtils]: 28: Hoare triple {900#true} assume true; {900#true} is VALID [2022-04-28 14:28:24,243 INFO L284 TraceCheckUtils]: 29: Hoare quadruple {900#true} {975#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} #57#return; {975#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} is VALID [2022-04-28 14:28:24,244 INFO L290 TraceCheckUtils]: 30: Hoare triple {975#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} assume !(~c~0 < ~k~0); {997#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} is VALID [2022-04-28 14:28:24,244 INFO L272 TraceCheckUtils]: 31: Hoare triple {997#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {900#true} is VALID [2022-04-28 14:28:24,244 INFO L290 TraceCheckUtils]: 32: Hoare triple {900#true} ~cond := #in~cond; {900#true} is VALID [2022-04-28 14:28:24,244 INFO L290 TraceCheckUtils]: 33: Hoare triple {900#true} assume !(0 == ~cond); {900#true} is VALID [2022-04-28 14:28:24,244 INFO L290 TraceCheckUtils]: 34: Hoare triple {900#true} assume true; {900#true} is VALID [2022-04-28 14:28:24,244 INFO L284 TraceCheckUtils]: 35: Hoare quadruple {900#true} {997#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} #59#return; {997#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} is VALID [2022-04-28 14:28:24,245 INFO L272 TraceCheckUtils]: 36: Hoare triple {997#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} call __VERIFIER_assert((if ~k~0 * ~y~0 == ~y~0 * ~y~0 then 1 else 0)); {1016#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 14:28:24,245 INFO L290 TraceCheckUtils]: 37: Hoare triple {1016#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1020#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 14:28:24,246 INFO L290 TraceCheckUtils]: 38: Hoare triple {1020#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {901#false} is VALID [2022-04-28 14:28:24,246 INFO L290 TraceCheckUtils]: 39: Hoare triple {901#false} assume !false; {901#false} is VALID [2022-04-28 14:28:24,246 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-28 14:28:24,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 14:28:24,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 14:28:24,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011344665] [2022-04-28 14:28:24,495 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 14:28:24,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870102498] [2022-04-28 14:28:24,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870102498] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-28 14:28:24,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-28 14:28:24,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-04-28 14:28:24,496 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 14:28:24,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [434353018] [2022-04-28 14:28:24,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [434353018] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:28:24,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:28:24,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-28 14:28:24,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396976694] [2022-04-28 14:28:24,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 14:28:24,497 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 [2022-04-28 14:28:24,497 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 14:28:24,497 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 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) [2022-04-28 14:28:24,522 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:24,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-28 14:28:24,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 14:28:24,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-28 14:28:24,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-28 14:28:24,523 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) [2022-04-28 14:28:24,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:24,756 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-04-28 14:28:24,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-28 14:28:24,756 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 [2022-04-28 14:28:24,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 14:28:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-28 14:28:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 42 transitions. [2022-04-28 14:28:24,758 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-28 14:28:24,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 42 transitions. [2022-04-28 14:28:24,759 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 42 transitions. [2022-04-28 14:28:24,788 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:24,789 INFO L225 Difference]: With dead ends: 42 [2022-04-28 14:28:24,789 INFO L226 Difference]: Without dead ends: 36 [2022-04-28 14:28:24,789 INFO L412 NwaCegarLoop]: 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 [2022-04-28 14:28:24,790 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 14:28:24,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 135 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 14:28:24,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-28 14:28:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-04-28 14:28:24,805 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 14:28:24,805 INFO L82 GeneralOperation]: Start isEquivalent. First operand 36 states. Second 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) [2022-04-28 14:28:24,805 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second 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) [2022-04-28 14:28:24,806 INFO L87 Difference]: Start difference. First operand 36 states. Second 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) [2022-04-28 14:28:24,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:24,807 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-04-28 14:28:24,807 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-04-28 14:28:24,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:28:24,807 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:28:24,808 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 36 states. [2022-04-28 14:28:24,808 INFO L87 Difference]: Start difference. First 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) Second operand 36 states. [2022-04-28 14:28:24,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:24,809 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-04-28 14:28:24,809 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-04-28 14:28:24,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:28:24,809 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:28:24,809 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 14:28:24,809 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 14:28:24,810 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) [2022-04-28 14:28:24,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-04-28 14:28:24,811 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 40 [2022-04-28 14:28:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 14:28:24,811 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-04-28 14:28:24,811 INFO L496 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) [2022-04-28 14:28:24,811 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 36 states and 39 transitions. [2022-04-28 14:28:27,076 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 38 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-04-28 14:28:27,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-28 14:28:27,077 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 14:28:27,077 INFO L195 NwaCegarLoop]: 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] [2022-04-28 14:28:27,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-28 14:28:27,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:28:27,287 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 14:28:27,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 14:28:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1886956461, now seen corresponding path program 3 times [2022-04-28 14:28:27,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 14:28:27,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1520682443] [2022-04-28 14:28:27,288 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 14:28:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1886956461, now seen corresponding path program 4 times [2022-04-28 14:28:27,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 14:28:27,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815319473] [2022-04-28 14:28:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 14:28:27,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 14:28:27,298 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 14:28:27,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737917089] [2022-04-28 14:28:27,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-28 14:28:27,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:28:27,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 14:28:27,300 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) [2022-04-28 14:28:27,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-28 14:28:27,328 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-28 14:28:27,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 14:28:27,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-28 14:28:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:28:27,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 14:28:27,583 INFO L272 TraceCheckUtils]: 0: Hoare triple {1315#true} call ULTIMATE.init(); {1315#true} is VALID [2022-04-28 14:28:27,583 INFO L290 TraceCheckUtils]: 1: Hoare triple {1315#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {1315#true} is VALID [2022-04-28 14:28:27,583 INFO L290 TraceCheckUtils]: 2: Hoare triple {1315#true} assume true; {1315#true} is VALID [2022-04-28 14:28:27,583 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1315#true} {1315#true} #63#return; {1315#true} is VALID [2022-04-28 14:28:27,583 INFO L272 TraceCheckUtils]: 4: Hoare triple {1315#true} call #t~ret5 := main(); {1315#true} is VALID [2022-04-28 14:28:27,583 INFO L290 TraceCheckUtils]: 5: Hoare triple {1315#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {1315#true} is VALID [2022-04-28 14:28:27,584 INFO L272 TraceCheckUtils]: 6: Hoare triple {1315#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 1 then 1 else 0)); {1315#true} is VALID [2022-04-28 14:28:27,584 INFO L290 TraceCheckUtils]: 7: Hoare triple {1315#true} ~cond := #in~cond; {1341#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} is VALID [2022-04-28 14:28:27,584 INFO L290 TraceCheckUtils]: 8: Hoare triple {1341#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} assume !(0 == ~cond); {1345#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-28 14:28:27,585 INFO L290 TraceCheckUtils]: 9: Hoare triple {1345#(not (= |assume_abort_if_not_#in~cond| 0))} assume true; {1345#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-28 14:28:27,585 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1345#(not (= |assume_abort_if_not_#in~cond| 0))} {1315#true} #53#return; {1352#(and (<= 0 main_~k~0) (<= main_~k~0 1))} is VALID [2022-04-28 14:28:27,585 INFO L272 TraceCheckUtils]: 11: Hoare triple {1352#(and (<= 0 main_~k~0) (<= main_~k~0 1))} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {1315#true} is VALID [2022-04-28 14:28:27,585 INFO L290 TraceCheckUtils]: 12: Hoare triple {1315#true} ~cond := #in~cond; {1315#true} is VALID [2022-04-28 14:28:27,586 INFO L290 TraceCheckUtils]: 13: Hoare triple {1315#true} assume !(0 == ~cond); {1315#true} is VALID [2022-04-28 14:28:27,586 INFO L290 TraceCheckUtils]: 14: Hoare triple {1315#true} assume true; {1315#true} is VALID [2022-04-28 14:28:27,586 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1315#true} {1352#(and (<= 0 main_~k~0) (<= main_~k~0 1))} #55#return; {1352#(and (<= 0 main_~k~0) (<= main_~k~0 1))} is VALID [2022-04-28 14:28:27,587 INFO L290 TraceCheckUtils]: 16: Hoare triple {1352#(and (<= 0 main_~k~0) (<= main_~k~0 1))} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {1371#(and (<= 0 main_~k~0) (<= main_~k~0 1) (<= 0 main_~c~0))} is VALID [2022-04-28 14:28:27,587 INFO L290 TraceCheckUtils]: 17: Hoare triple {1371#(and (<= 0 main_~k~0) (<= main_~k~0 1) (<= 0 main_~c~0))} assume !false; {1371#(and (<= 0 main_~k~0) (<= main_~k~0 1) (<= 0 main_~c~0))} is VALID [2022-04-28 14:28:27,587 INFO L272 TraceCheckUtils]: 18: Hoare triple {1371#(and (<= 0 main_~k~0) (<= main_~k~0 1) (<= 0 main_~c~0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {1315#true} is VALID [2022-04-28 14:28:27,587 INFO L290 TraceCheckUtils]: 19: Hoare triple {1315#true} ~cond := #in~cond; {1315#true} is VALID [2022-04-28 14:28:27,587 INFO L290 TraceCheckUtils]: 20: Hoare triple {1315#true} assume !(0 == ~cond); {1315#true} is VALID [2022-04-28 14:28:27,587 INFO L290 TraceCheckUtils]: 21: Hoare triple {1315#true} assume true; {1315#true} is VALID [2022-04-28 14:28:27,588 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {1315#true} {1371#(and (<= 0 main_~k~0) (<= main_~k~0 1) (<= 0 main_~c~0))} #57#return; {1371#(and (<= 0 main_~k~0) (<= main_~k~0 1) (<= 0 main_~c~0))} is VALID [2022-04-28 14:28:27,589 INFO L290 TraceCheckUtils]: 23: Hoare triple {1371#(and (<= 0 main_~k~0) (<= main_~k~0 1) (<= 0 main_~c~0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {1393#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1))} is VALID [2022-04-28 14:28:27,589 INFO L290 TraceCheckUtils]: 24: Hoare triple {1393#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1))} assume !false; {1393#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1))} is VALID [2022-04-28 14:28:27,589 INFO L272 TraceCheckUtils]: 25: Hoare triple {1393#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {1315#true} is VALID [2022-04-28 14:28:27,589 INFO L290 TraceCheckUtils]: 26: Hoare triple {1315#true} ~cond := #in~cond; {1315#true} is VALID [2022-04-28 14:28:27,590 INFO L290 TraceCheckUtils]: 27: Hoare triple {1315#true} assume !(0 == ~cond); {1315#true} is VALID [2022-04-28 14:28:27,590 INFO L290 TraceCheckUtils]: 28: Hoare triple {1315#true} assume true; {1315#true} is VALID [2022-04-28 14:28:27,590 INFO L284 TraceCheckUtils]: 29: Hoare quadruple {1315#true} {1393#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1))} #57#return; {1393#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1))} is VALID [2022-04-28 14:28:27,591 INFO L290 TraceCheckUtils]: 30: Hoare triple {1393#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {1316#false} is VALID [2022-04-28 14:28:27,591 INFO L290 TraceCheckUtils]: 31: Hoare triple {1316#false} assume !false; {1316#false} is VALID [2022-04-28 14:28:27,591 INFO L272 TraceCheckUtils]: 32: Hoare triple {1316#false} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {1316#false} is VALID [2022-04-28 14:28:27,591 INFO L290 TraceCheckUtils]: 33: Hoare triple {1316#false} ~cond := #in~cond; {1316#false} is VALID [2022-04-28 14:28:27,591 INFO L290 TraceCheckUtils]: 34: Hoare triple {1316#false} assume !(0 == ~cond); {1316#false} is VALID [2022-04-28 14:28:27,591 INFO L290 TraceCheckUtils]: 35: Hoare triple {1316#false} assume true; {1316#false} is VALID [2022-04-28 14:28:27,591 INFO L284 TraceCheckUtils]: 36: Hoare quadruple {1316#false} {1316#false} #57#return; {1316#false} is VALID [2022-04-28 14:28:27,592 INFO L290 TraceCheckUtils]: 37: Hoare triple {1316#false} assume !(~c~0 < ~k~0); {1316#false} is VALID [2022-04-28 14:28:27,592 INFO L272 TraceCheckUtils]: 38: Hoare triple {1316#false} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {1316#false} is VALID [2022-04-28 14:28:27,592 INFO L290 TraceCheckUtils]: 39: Hoare triple {1316#false} ~cond := #in~cond; {1316#false} is VALID [2022-04-28 14:28:27,592 INFO L290 TraceCheckUtils]: 40: Hoare triple {1316#false} assume !(0 == ~cond); {1316#false} is VALID [2022-04-28 14:28:27,592 INFO L290 TraceCheckUtils]: 41: Hoare triple {1316#false} assume true; {1316#false} is VALID [2022-04-28 14:28:27,592 INFO L284 TraceCheckUtils]: 42: Hoare quadruple {1316#false} {1316#false} #59#return; {1316#false} is VALID [2022-04-28 14:28:27,592 INFO L272 TraceCheckUtils]: 43: Hoare triple {1316#false} call __VERIFIER_assert((if ~k~0 * ~y~0 == ~y~0 * ~y~0 then 1 else 0)); {1316#false} is VALID [2022-04-28 14:28:27,592 INFO L290 TraceCheckUtils]: 44: Hoare triple {1316#false} ~cond := #in~cond; {1316#false} is VALID [2022-04-28 14:28:27,592 INFO L290 TraceCheckUtils]: 45: Hoare triple {1316#false} assume 0 == ~cond; {1316#false} is VALID [2022-04-28 14:28:27,592 INFO L290 TraceCheckUtils]: 46: Hoare triple {1316#false} assume !false; {1316#false} is VALID [2022-04-28 14:28:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-04-28 14:28:27,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 14:28:27,836 INFO L290 TraceCheckUtils]: 46: Hoare triple {1316#false} assume !false; {1316#false} is VALID [2022-04-28 14:28:27,836 INFO L290 TraceCheckUtils]: 45: Hoare triple {1316#false} assume 0 == ~cond; {1316#false} is VALID [2022-04-28 14:28:27,836 INFO L290 TraceCheckUtils]: 44: Hoare triple {1316#false} ~cond := #in~cond; {1316#false} is VALID [2022-04-28 14:28:27,836 INFO L272 TraceCheckUtils]: 43: Hoare triple {1316#false} call __VERIFIER_assert((if ~k~0 * ~y~0 == ~y~0 * ~y~0 then 1 else 0)); {1316#false} is VALID [2022-04-28 14:28:27,836 INFO L284 TraceCheckUtils]: 42: Hoare quadruple {1315#true} {1316#false} #59#return; {1316#false} is VALID [2022-04-28 14:28:27,836 INFO L290 TraceCheckUtils]: 41: Hoare triple {1315#true} assume true; {1315#true} is VALID [2022-04-28 14:28:27,837 INFO L290 TraceCheckUtils]: 40: Hoare triple {1315#true} assume !(0 == ~cond); {1315#true} is VALID [2022-04-28 14:28:27,837 INFO L290 TraceCheckUtils]: 39: Hoare triple {1315#true} ~cond := #in~cond; {1315#true} is VALID [2022-04-28 14:28:27,837 INFO L272 TraceCheckUtils]: 38: Hoare triple {1316#false} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {1315#true} is VALID [2022-04-28 14:28:27,837 INFO L290 TraceCheckUtils]: 37: Hoare triple {1316#false} assume !(~c~0 < ~k~0); {1316#false} is VALID [2022-04-28 14:28:27,837 INFO L284 TraceCheckUtils]: 36: Hoare quadruple {1315#true} {1316#false} #57#return; {1316#false} is VALID [2022-04-28 14:28:27,837 INFO L290 TraceCheckUtils]: 35: Hoare triple {1315#true} assume true; {1315#true} is VALID [2022-04-28 14:28:27,837 INFO L290 TraceCheckUtils]: 34: Hoare triple {1315#true} assume !(0 == ~cond); {1315#true} is VALID [2022-04-28 14:28:27,837 INFO L290 TraceCheckUtils]: 33: Hoare triple {1315#true} ~cond := #in~cond; {1315#true} is VALID [2022-04-28 14:28:27,837 INFO L272 TraceCheckUtils]: 32: Hoare triple {1316#false} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {1315#true} is VALID [2022-04-28 14:28:27,837 INFO L290 TraceCheckUtils]: 31: Hoare triple {1316#false} assume !false; {1316#false} is VALID [2022-04-28 14:28:27,838 INFO L290 TraceCheckUtils]: 30: Hoare triple {1511#(not (< main_~c~0 main_~k~0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {1316#false} is VALID [2022-04-28 14:28:27,838 INFO L284 TraceCheckUtils]: 29: Hoare quadruple {1315#true} {1511#(not (< main_~c~0 main_~k~0))} #57#return; {1511#(not (< main_~c~0 main_~k~0))} is VALID [2022-04-28 14:28:27,838 INFO L290 TraceCheckUtils]: 28: Hoare triple {1315#true} assume true; {1315#true} is VALID [2022-04-28 14:28:27,838 INFO L290 TraceCheckUtils]: 27: Hoare triple {1315#true} assume !(0 == ~cond); {1315#true} is VALID [2022-04-28 14:28:27,838 INFO L290 TraceCheckUtils]: 26: Hoare triple {1315#true} ~cond := #in~cond; {1315#true} is VALID [2022-04-28 14:28:27,838 INFO L272 TraceCheckUtils]: 25: Hoare triple {1511#(not (< main_~c~0 main_~k~0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {1315#true} is VALID [2022-04-28 14:28:27,839 INFO L290 TraceCheckUtils]: 24: Hoare triple {1511#(not (< main_~c~0 main_~k~0))} assume !false; {1511#(not (< main_~c~0 main_~k~0))} is VALID [2022-04-28 14:28:27,839 INFO L290 TraceCheckUtils]: 23: Hoare triple {1533#(<= main_~k~0 (+ main_~c~0 1))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {1511#(not (< main_~c~0 main_~k~0))} is VALID [2022-04-28 14:28:27,840 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {1315#true} {1533#(<= main_~k~0 (+ main_~c~0 1))} #57#return; {1533#(<= main_~k~0 (+ main_~c~0 1))} is VALID [2022-04-28 14:28:27,840 INFO L290 TraceCheckUtils]: 21: Hoare triple {1315#true} assume true; {1315#true} is VALID [2022-04-28 14:28:27,840 INFO L290 TraceCheckUtils]: 20: Hoare triple {1315#true} assume !(0 == ~cond); {1315#true} is VALID [2022-04-28 14:28:27,840 INFO L290 TraceCheckUtils]: 19: Hoare triple {1315#true} ~cond := #in~cond; {1315#true} is VALID [2022-04-28 14:28:27,840 INFO L272 TraceCheckUtils]: 18: Hoare triple {1533#(<= main_~k~0 (+ main_~c~0 1))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {1315#true} is VALID [2022-04-28 14:28:27,840 INFO L290 TraceCheckUtils]: 17: Hoare triple {1533#(<= main_~k~0 (+ main_~c~0 1))} assume !false; {1533#(<= main_~k~0 (+ main_~c~0 1))} is VALID [2022-04-28 14:28:27,841 INFO L290 TraceCheckUtils]: 16: Hoare triple {1555#(<= main_~k~0 1)} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {1533#(<= main_~k~0 (+ main_~c~0 1))} is VALID [2022-04-28 14:28:27,841 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1315#true} {1555#(<= main_~k~0 1)} #55#return; {1555#(<= main_~k~0 1)} is VALID [2022-04-28 14:28:27,841 INFO L290 TraceCheckUtils]: 14: Hoare triple {1315#true} assume true; {1315#true} is VALID [2022-04-28 14:28:27,841 INFO L290 TraceCheckUtils]: 13: Hoare triple {1315#true} assume !(0 == ~cond); {1315#true} is VALID [2022-04-28 14:28:27,841 INFO L290 TraceCheckUtils]: 12: Hoare triple {1315#true} ~cond := #in~cond; {1315#true} is VALID [2022-04-28 14:28:27,842 INFO L272 TraceCheckUtils]: 11: Hoare triple {1555#(<= main_~k~0 1)} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {1315#true} is VALID [2022-04-28 14:28:27,842 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1345#(not (= |assume_abort_if_not_#in~cond| 0))} {1315#true} #53#return; {1555#(<= main_~k~0 1)} is VALID [2022-04-28 14:28:27,842 INFO L290 TraceCheckUtils]: 9: Hoare triple {1345#(not (= |assume_abort_if_not_#in~cond| 0))} assume true; {1345#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-28 14:28:27,843 INFO L290 TraceCheckUtils]: 8: Hoare triple {1583#(or (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond 0))} assume !(0 == ~cond); {1345#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-28 14:28:27,843 INFO L290 TraceCheckUtils]: 7: Hoare triple {1315#true} ~cond := #in~cond; {1583#(or (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond 0))} is VALID [2022-04-28 14:28:27,843 INFO L272 TraceCheckUtils]: 6: Hoare triple {1315#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 1 then 1 else 0)); {1315#true} is VALID [2022-04-28 14:28:27,843 INFO L290 TraceCheckUtils]: 5: Hoare triple {1315#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {1315#true} is VALID [2022-04-28 14:28:27,843 INFO L272 TraceCheckUtils]: 4: Hoare triple {1315#true} call #t~ret5 := main(); {1315#true} is VALID [2022-04-28 14:28:27,843 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1315#true} {1315#true} #63#return; {1315#true} is VALID [2022-04-28 14:28:27,843 INFO L290 TraceCheckUtils]: 2: Hoare triple {1315#true} assume true; {1315#true} is VALID [2022-04-28 14:28:27,843 INFO L290 TraceCheckUtils]: 1: Hoare triple {1315#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {1315#true} is VALID [2022-04-28 14:28:27,843 INFO L272 TraceCheckUtils]: 0: Hoare triple {1315#true} call ULTIMATE.init(); {1315#true} is VALID [2022-04-28 14:28:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-04-28 14:28:27,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 14:28:27,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815319473] [2022-04-28 14:28:27,844 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 14:28:27,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737917089] [2022-04-28 14:28:27,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737917089] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 14:28:27,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 14:28:27,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-04-28 14:28:27,844 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 14:28:27,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1520682443] [2022-04-28 14:28:27,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1520682443] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:28:27,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:28:27,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-28 14:28:27,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021743301] [2022-04-28 14:28:27,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 14:28:27,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 47 [2022-04-28 14:28:27,845 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 14:28:27,846 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-04-28 14:28:27,870 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:27,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-28 14:28:27,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 14:28:27,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-28 14:28:27,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-04-28 14:28:27,871 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-04-28 14:28:28,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:28,016 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2022-04-28 14:28:28,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-28 14:28:28,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 47 [2022-04-28 14:28:28,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 14:28:28,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-04-28 14:28:28,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-04-28 14:28:28,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-04-28 14:28:28,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-04-28 14:28:28,018 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 40 transitions. [2022-04-28 14:28:28,046 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:28,047 INFO L225 Difference]: With dead ends: 42 [2022-04-28 14:28:28,047 INFO L226 Difference]: Without dead ends: 0 [2022-04-28 14:28:28,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-28 14:28:28,048 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 14:28:28,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 89 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 14:28:28,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-28 14:28:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-28 14:28:28,048 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 14:28:28,048 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second 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) [2022-04-28 14:28:28,048 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second 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) [2022-04-28 14:28:28,048 INFO L87 Difference]: Start difference. First operand 0 states. Second 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) [2022-04-28 14:28:28,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:28,049 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 14:28:28,049 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 14:28:28,049 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:28:28,049 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:28:28,049 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 0 states. [2022-04-28 14:28:28,050 INFO L87 Difference]: Start difference. First 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) Second operand 0 states. [2022-04-28 14:28:28,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:28:28,050 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 14:28:28,050 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 14:28:28,050 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:28:28,050 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:28:28,050 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 14:28:28,050 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 14:28:28,050 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) [2022-04-28 14:28:28,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-28 14:28:28,051 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2022-04-28 14:28:28,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 14:28:28,051 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-28 14:28:28,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-04-28 14:28:28,051 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-28 14:28:28,051 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:28:28,051 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 14:28:28,051 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:28:28,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 14:28:28,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-04-28 14:28:28,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:28:28,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-28 14:28:28,554 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-04-28 14:28:28,554 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-04-28 14:28:28,554 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-04-28 14:28:28,554 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 6 8) the Hoare annotation is: true [2022-04-28 14:28:28,554 INFO L895 garLoopResultBuilder]: At program point L7(line 7) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-04-28 14:28:28,555 INFO L895 garLoopResultBuilder]: At program point L7-2(lines 6 8) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-28 14:28:28,555 INFO L895 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 6 8) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-28 14:28:28,555 INFO L902 garLoopResultBuilder]: At program point mainENTRY(lines 17 42) the Hoare annotation is: true [2022-04-28 14:28:28,555 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 1)) (.cse1 (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10))))) (or (and (<= 1 main_~c~0) .cse0 (= main_~y~0 1) .cse1 (< 0 main_~k~0) (<= main_~c~0 1)) (and (<= 0 main_~k~0) .cse0 .cse1 (= main_~c~0 0) (= main_~y~0 0)))) [2022-04-28 14:28:28,555 INFO L895 garLoopResultBuilder]: At program point L29-1(lines 28 37) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 1)) (.cse1 (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10))))) (or (and (<= 1 main_~c~0) .cse0 (= main_~y~0 1) .cse1 (< 0 main_~k~0) (<= main_~c~0 1)) (and (<= 0 main_~k~0) .cse0 .cse1 (= main_~c~0 0) (= main_~y~0 0)))) [2022-04-28 14:28:28,555 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 1)) (.cse1 (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10))))) (or (and (<= 1 main_~c~0) .cse0 (= main_~y~0 1) .cse1 (< 0 main_~k~0) (<= main_~c~0 1)) (and (<= 0 main_~k~0) .cse0 .cse1 (= main_~c~0 0) (= main_~y~0 0)))) [2022-04-28 14:28:28,555 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (or (and (= main_~x~0 0) (= main_~y~0 0)) (and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10))) (< 0 main_~k~0) (<= main_~c~0 1))) [2022-04-28 14:28:28,555 INFO L902 garLoopResultBuilder]: At program point mainEXIT(lines 17 42) the Hoare annotation is: true [2022-04-28 14:28:28,555 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (and (<= 0 main_~k~0) (<= main_~k~0 1)) [2022-04-28 14:28:28,555 INFO L902 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2022-04-28 14:28:28,555 INFO L895 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (and (<= 0 main_~k~0) (<= main_~k~0 1)) [2022-04-28 14:28:28,555 INFO L902 garLoopResultBuilder]: At program point mainFINAL(lines 17 42) the Hoare annotation is: true [2022-04-28 14:28:28,555 INFO L902 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: true [2022-04-28 14:28:28,555 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (or (and (= main_~x~0 0) (= main_~y~0 0)) (and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10))) (< 0 main_~k~0) (<= main_~c~0 1))) [2022-04-28 14:28:28,555 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-28 14:28:28,555 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-28 14:28:28,555 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-28 14:28:28,555 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-28 14:28:28,556 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-28 14:28:28,556 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-28 14:28:28,556 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-28 14:28:28,556 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-04-28 14:28:28,556 INFO L895 garLoopResultBuilder]: At program point L11(lines 11 12) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-28 14:28:28,556 INFO L895 garLoopResultBuilder]: At program point L10(lines 10 13) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-04-28 14:28:28,556 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 9 15) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-04-28 14:28:28,556 INFO L895 garLoopResultBuilder]: At program point L10-2(lines 9 15) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-04-28 14:28:28,556 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-28 14:28:28,558 INFO L356 BasicCegarLoop]: Path program histogram: [4, 2, 2, 2] [2022-04-28 14:28:28,559 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 14:28:28,561 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 14:28:28,562 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 14:28:28,628 INFO L163 areAnnotationChecker]: CFG has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 14:28:28,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 02:28:28 BoogieIcfgContainer [2022-04-28 14:28:28,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 14:28:28,635 INFO L158 Benchmark]: Toolchain (without parser) took 12155.19ms. Allocated memory was 195.0MB in the beginning and 244.3MB in the end (delta: 49.3MB). Free memory was 145.5MB in the beginning and 150.9MB in the end (delta: -5.4MB). Peak memory consumption was 44.7MB. Max. memory is 8.0GB. [2022-04-28 14:28:28,636 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory was 162.2MB in the beginning and 162.1MB in the end (delta: 75.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 14:28:28,636 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.53ms. Allocated memory is still 195.0MB. Free memory was 145.4MB in the beginning and 170.1MB in the end (delta: -24.8MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. [2022-04-28 14:28:28,636 INFO L158 Benchmark]: Boogie Preprocessor took 18.62ms. Allocated memory is still 195.0MB. Free memory was 170.1MB in the beginning and 168.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-28 14:28:28,636 INFO L158 Benchmark]: RCFGBuilder took 194.48ms. Allocated memory is still 195.0MB. Free memory was 168.6MB in the beginning and 157.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-28 14:28:28,636 INFO L158 Benchmark]: TraceAbstraction took 11749.02ms. Allocated memory was 195.0MB in the beginning and 244.3MB in the end (delta: 49.3MB). Free memory was 157.0MB in the beginning and 150.9MB in the end (delta: 6.1MB). Peak memory consumption was 56.2MB. Max. memory is 8.0GB. [2022-04-28 14:28:28,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory was 162.2MB in the beginning and 162.1MB in the end (delta: 75.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 179.53ms. Allocated memory is still 195.0MB. Free memory was 145.4MB in the beginning and 170.1MB in the end (delta: -24.8MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.62ms. Allocated memory is still 195.0MB. Free memory was 170.1MB in the beginning and 168.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 194.48ms. Allocated memory is still 195.0MB. Free memory was 168.6MB in the beginning and 157.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 11749.02ms. Allocated memory was 195.0MB in the beginning and 244.3MB in the end (delta: 49.3MB). Free memory was 157.0MB in the beginning and 150.9MB in the end (delta: 6.1MB). Peak memory consumption was 56.2MB. 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 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.6s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 414 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 291 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 159 IncrementalHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 123 mSDtfsCounter, 159 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 243 GetRequests, 209 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 29 LocationsWithAnnotation, 103 PreInvPairs, 140 NumberOfFragments, 445 HoareAnnotationTreeSize, 103 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 29 FomulaSimplificationsInter, 58 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((1 <= c && k <= 1) && y == 1) && y + 30 * x == y * y * y * y * 15 + 6 * (y * y * y * y * y) + y * y * y * 10) && 0 < k) && c <= 1) || ((((0 <= k && k <= 1) && y + 30 * x == y * y * y * y * 15 + 6 * (y * y * y * y * y) + y * y * y * 10) && c == 0) && y == 0) - ProcedureContractResult [Line: 6]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 17]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: !(1 <= \old(cond)) || 1 <= cond RESULT: Ultimate proved your program to be correct! [2022-04-28 14:28:28,654 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...