/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loops/sum03-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 02:45:43,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 02:45:43,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 02:45:43,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 02:45:43,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 02:45:43,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 02:45:43,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 02:45:43,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 02:45:43,176 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 02:45:43,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 02:45:43,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 02:45:43,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 02:45:43,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 02:45:43,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 02:45:43,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 02:45:43,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 02:45:43,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 02:45:43,178 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 02:45:43,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 02:45:43,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 02:45:43,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 02:45:43,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 02:45:43,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 02:45:43,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:45:43,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 02:45:43,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 02:45:43,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 02:45:43,180 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 02:45:43,180 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 02:45:43,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 02:45:43,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 02:45:43,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 02:45:43,383 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 02:45:43,383 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 02:45:43,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-1.i [2022-02-24 02:45:43,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ba9506f/84560ea30e44417f87ec93cd664e9ca6/FLAGd21c1bcf7 [2022-02-24 02:45:43,827 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 02:45:43,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i [2022-02-24 02:45:43,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ba9506f/84560ea30e44417f87ec93cd664e9ca6/FLAGd21c1bcf7 [2022-02-24 02:45:43,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ba9506f/84560ea30e44417f87ec93cd664e9ca6 [2022-02-24 02:45:43,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 02:45:43,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 02:45:43,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 02:45:43,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 02:45:43,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 02:45:43,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:45:43" (1/1) ... [2022-02-24 02:45:43,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595c05b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:43, skipping insertion in model container [2022-02-24 02:45:43,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:45:43" (1/1) ... [2022-02-24 02:45:43,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 02:45:43,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 02:45:43,983 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i[807,820] [2022-02-24 02:45:43,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:45:43,997 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 02:45:44,005 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i[807,820] [2022-02-24 02:45:44,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:45:44,017 INFO L208 MainTranslator]: Completed translation [2022-02-24 02:45:44,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:44 WrapperNode [2022-02-24 02:45:44,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 02:45:44,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 02:45:44,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 02:45:44,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 02:45:44,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:44" (1/1) ... [2022-02-24 02:45:44,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:44" (1/1) ... [2022-02-24 02:45:44,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:44" (1/1) ... [2022-02-24 02:45:44,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:44" (1/1) ... [2022-02-24 02:45:44,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:44" (1/1) ... [2022-02-24 02:45:44,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:44" (1/1) ... [2022-02-24 02:45:44,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:44" (1/1) ... [2022-02-24 02:45:44,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 02:45:44,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 02:45:44,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 02:45:44,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 02:45:44,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:44" (1/1) ... [2022-02-24 02:45:44,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:45:44,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 02:45:44,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-24 02:45:44,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-24 02:45:44,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 02:45:44,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 02:45:44,084 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 02:45:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-24 02:45:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 02:45:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 02:45:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 02:45:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-24 02:45:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-24 02:45:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 02:45:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 02:45:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-24 02:45:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-02-24 02:45:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 02:45:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 02:45:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 02:45:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 02:45:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 02:45:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 02:45:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 02:45:44,131 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 02:45:44,132 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 02:45:44,235 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 02:45:44,240 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 02:45:44,240 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-24 02:45:44,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:45:44 BoogieIcfgContainer [2022-02-24 02:45:44,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 02:45:44,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 02:45:44,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 02:45:44,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 02:45:44,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 02:45:43" (1/3) ... [2022-02-24 02:45:44,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6486d1c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:45:44, skipping insertion in model container [2022-02-24 02:45:44,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:44" (2/3) ... [2022-02-24 02:45:44,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6486d1c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:45:44, skipping insertion in model container [2022-02-24 02:45:44,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:45:44" (3/3) ... [2022-02-24 02:45:44,249 INFO L111 eAbstractionObserver]: Analyzing ICFG sum03-1.i [2022-02-24 02:45:44,253 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 02:45:44,253 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 02:45:44,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 02:45:44,303 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, 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, mLoopAccelerationTechnique=QVASR [2022-02-24 02:45:44,304 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 02:45:44,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-24 02:45:44,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-24 02:45:44,342 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:44,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:44,343 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:44,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:44,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1946695220, now seen corresponding path program 1 times [2022-02-24 02:45:44,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:44,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311619560] [2022-02-24 02:45:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:44,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:44,411 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:45:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:44,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:45:44,812 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:44,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311619560] [2022-02-24 02:45:44,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [311619560] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:44,814 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:44,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:45:44,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692524776] [2022-02-24 02:45:44,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:44,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:45:44,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:44,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:45:44,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:45:44,858 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:45,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:45,044 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2022-02-24 02:45:45,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 02:45:45,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-02-24 02:45:45,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:45,052 INFO L225 Difference]: With dead ends: 41 [2022-02-24 02:45:45,052 INFO L226 Difference]: Without dead ends: 27 [2022-02-24 02:45:45,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:45:45,058 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:45,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 33 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:45:45,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-24 02:45:45,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-02-24 02:45:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-24 02:45:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-02-24 02:45:45,091 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 13 [2022-02-24 02:45:45,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:45,091 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-02-24 02:45:45,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:45,091 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-02-24 02:45:45,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-24 02:45:45,092 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:45,092 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:45,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 02:45:45,093 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:45,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:45,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1052577873, now seen corresponding path program 1 times [2022-02-24 02:45:45,094 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:45,094 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081248954] [2022-02-24 02:45:45,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:45,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:45,374 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:45:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:45:46,354 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:46,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081248954] [2022-02-24 02:45:46,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1081248954] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:46,354 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:46,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 02:45:46,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533746686] [2022-02-24 02:45:46,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:46,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 02:45:46,356 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:46,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 02:45:46,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:45:46,356 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 10 states have internal predecessors, (15), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 02:45:46,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:46,722 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-02-24 02:45:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 02:45:46,723 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.25) internal successors, (15), 10 states have internal predecessors, (15), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-02-24 02:45:46,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:46,724 INFO L225 Difference]: With dead ends: 35 [2022-02-24 02:45:46,724 INFO L226 Difference]: Without dead ends: 33 [2022-02-24 02:45:46,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:45:46,726 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:46,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 48 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 63 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2022-02-24 02:45:46,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-24 02:45:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2022-02-24 02:45:46,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-24 02:45:46,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-02-24 02:45:46,739 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2022-02-24 02:45:46,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:46,740 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-02-24 02:45:46,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.25) internal successors, (15), 10 states have internal predecessors, (15), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 02:45:46,740 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-02-24 02:45:46,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-24 02:45:46,743 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:46,743 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:46,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 02:45:46,744 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:46,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:46,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1109836175, now seen corresponding path program 1 times [2022-02-24 02:45:46,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:46,746 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279015907] [2022-02-24 02:45:46,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:46,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:46,873 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:45:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-24 02:45:46,898 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-24 02:45:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-24 02:45:46,957 INFO L138 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-24 02:45:46,957 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-24 02:45:46,960 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 02:45:46,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 02:45:46,964 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-24 02:45:46,967 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 02:45:46,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 02:45:46 BoogieIcfgContainer [2022-02-24 02:45:46,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 02:45:46,982 INFO L158 Benchmark]: Toolchain (without parser) took 3133.36ms. Allocated memory was 199.2MB in the beginning and 250.6MB in the end (delta: 51.4MB). Free memory was 147.3MB in the beginning and 146.4MB in the end (delta: 868.1kB). Peak memory consumption was 53.2MB. Max. memory is 8.0GB. [2022-02-24 02:45:46,982 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 199.2MB. Free memory was 163.7MB in the beginning and 163.6MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 02:45:46,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.28ms. Allocated memory is still 199.2MB. Free memory was 147.1MB in the beginning and 172.3MB in the end (delta: -25.2MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2022-02-24 02:45:46,984 INFO L158 Benchmark]: Boogie Preprocessor took 16.46ms. Allocated memory is still 199.2MB. Free memory was 172.3MB in the beginning and 170.9MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-24 02:45:46,986 INFO L158 Benchmark]: RCFGBuilder took 206.48ms. Allocated memory is still 199.2MB. Free memory was 170.9MB in the beginning and 161.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-24 02:45:46,988 INFO L158 Benchmark]: TraceAbstraction took 2737.42ms. Allocated memory was 199.2MB in the beginning and 250.6MB in the end (delta: 51.4MB). Free memory was 160.4MB in the beginning and 146.4MB in the end (delta: 14.0MB). Peak memory consumption was 66.4MB. Max. memory is 8.0GB. [2022-02-24 02:45:46,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 199.2MB. Free memory was 163.7MB in the beginning and 163.6MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 169.28ms. Allocated memory is still 199.2MB. Free memory was 147.1MB in the beginning and 172.3MB in the end (delta: -25.2MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.46ms. Allocated memory is still 199.2MB. Free memory was 172.3MB in the beginning and 170.9MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 206.48ms. Allocated memory is still 199.2MB. Free memory was 170.9MB in the beginning and 161.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2737.42ms. Allocated memory was 199.2MB in the beginning and 250.6MB in the end (delta: 51.4MB). Free memory was 160.4MB in the beginning and 146.4MB in the end (delta: 14.0MB). Peak memory consumption was 66.4MB. 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int sn=0; [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L23] unsigned int x=0; [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND FALSE !(x<10) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 14 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 128 IncrementalHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 22 mSDtfsCounter, 128 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=2, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, 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 RESULT: Ultimate proved your program to be incorrect! [2022-02-24 02:45:47,018 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...