/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 01:45:21,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 01:45:21,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 01:45:22,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 01:45:22,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 01:45:22,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 01:45:22,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 01:45:22,046 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-24 01:45:22,055 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 01:45:22,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 01:45:22,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 01:45:22,057 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-24 01:45:22,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 01:45:22,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-24 01:45:22,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 01:45:22,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 01:45:22,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 01:45:22,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 01:45:22,058 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-24 01:45:22,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 01:45:22,058 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 01:45:22,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 01:45:22,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 01:45:22,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 01:45:22,058 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 01:45:22,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 01:45:22,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 01:45:22,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 01:45:22,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 01:45:22,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 01:45:22,059 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-24 01:45:22,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 01:45:22,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 01:45:22,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 01:45:22,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 01:45:22,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 01:45:22,253 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 01:45:22,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i [2022-02-24 01:45:22,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8005fa87/dc31af4db1b244079e409a01bd4d4a29/FLAG3dfb5ad7b [2022-02-24 01:45:22,643 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 01:45:22,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i [2022-02-24 01:45:22,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8005fa87/dc31af4db1b244079e409a01bd4d4a29/FLAG3dfb5ad7b [2022-02-24 01:45:23,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8005fa87/dc31af4db1b244079e409a01bd4d4a29 [2022-02-24 01:45:23,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 01:45:23,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 01:45:23,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 01:45:23,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 01:45:23,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 01:45:23,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 01:45:23" (1/1) ... [2022-02-24 01:45:23,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60821768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:45:23, skipping insertion in model container [2022-02-24 01:45:23,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 01:45:23" (1/1) ... [2022-02-24 01:45:23,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 01:45:23,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 01:45:23,195 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i[873,886] [2022-02-24 01:45:23,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 01:45:23,205 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 01:45:23,215 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i[873,886] [2022-02-24 01:45:23,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 01:45:23,224 INFO L208 MainTranslator]: Completed translation [2022-02-24 01:45:23,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:45:23 WrapperNode [2022-02-24 01:45:23,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 01:45:23,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 01:45:23,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 01:45:23,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 01:45:23,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:45:23" (1/1) ... [2022-02-24 01:45:23,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:45:23" (1/1) ... [2022-02-24 01:45:23,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:45:23" (1/1) ... [2022-02-24 01:45:23,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:45:23" (1/1) ... [2022-02-24 01:45:23,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:45:23" (1/1) ... [2022-02-24 01:45:23,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:45:23" (1/1) ... [2022-02-24 01:45:23,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:45:23" (1/1) ... [2022-02-24 01:45:23,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 01:45:23,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 01:45:23,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 01:45:23,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 01:45:23,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:45:23" (1/1) ... [2022-02-24 01:45:23,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 01:45:23,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 01:45:23,264 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 01:45:23,272 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 01:45:23,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 01:45:23,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 01:45:23,297 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 01:45:23,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-24 01:45:23,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 01:45:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 01:45:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-24 01:45:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-24 01:45:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 01:45:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 01:45:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 01:45:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-02-24 01:45:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-24 01:45:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 01:45:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 01:45:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 01:45:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 01:45:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 01:45:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 01:45:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 01:45:23,345 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 01:45:23,346 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 01:45:23,415 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 01:45:23,419 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 01:45:23,419 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-24 01:45:23,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 01:45:23 BoogieIcfgContainer [2022-02-24 01:45:23,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 01:45:23,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 01:45:23,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 01:45:23,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 01:45:23,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 01:45:23" (1/3) ... [2022-02-24 01:45:23,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2015da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 01:45:23, skipping insertion in model container [2022-02-24 01:45:23,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:45:23" (2/3) ... [2022-02-24 01:45:23,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2015da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 01:45:23, skipping insertion in model container [2022-02-24 01:45:23,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 01:45:23" (3/3) ... [2022-02-24 01:45:23,437 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark10_conjunctive.i [2022-02-24 01:45:23,440 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 01:45:23,440 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 01:45:23,494 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 01:45:23,500 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=JORDAN [2022-02-24 01:45:23,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 01:45:23,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 01:45:23,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-24 01:45:23,528 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:23,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:23,529 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:23,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:23,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1360020621, now seen corresponding path program 1 times [2022-02-24 01:45:23,542 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:23,543 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433871275] [2022-02-24 01:45:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:23,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:23,593 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:45:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:23,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:23,691 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 01:45:23,692 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:23,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433871275] [2022-02-24 01:45:23,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1433871275] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:23,693 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:23,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-24 01:45:23,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629839370] [2022-02-24 01:45:23,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:23,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-24 01:45:23,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:23,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-24 01:45:23,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-24 01:45:23,715 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 01:45:23,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:23,780 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2022-02-24 01:45:23,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-24 01:45:23,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 12 [2022-02-24 01:45:23,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:23,786 INFO L225 Difference]: With dead ends: 38 [2022-02-24 01:45:23,786 INFO L226 Difference]: Without dead ends: 16 [2022-02-24 01:45:23,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-24 01:45:23,790 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:45:23,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 32 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:45:23,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-02-24 01:45:23,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-02-24 01:45:23,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 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 01:45:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-02-24 01:45:23,813 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2022-02-24 01:45:23,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:23,813 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-02-24 01:45:23,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 01:45:23,814 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-02-24 01:45:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-24 01:45:23,814 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:23,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:23,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 01:45:23,815 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:23,815 INFO L85 PathProgramCache]: Analyzing trace with hash 824422544, now seen corresponding path program 1 times [2022-02-24 01:45:23,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:23,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955404227] [2022-02-24 01:45:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:23,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:23,818 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:45:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:23,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:23,859 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 01:45:23,860 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:23,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955404227] [2022-02-24 01:45:23,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [955404227] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:23,860 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:23,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 01:45:23,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036322441] [2022-02-24 01:45:23,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:23,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 01:45:23,861 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 01:45:23,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 01:45:23,862 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 01:45:23,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:23,893 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-02-24 01:45:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 01:45:23,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 01:45:23,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:23,894 INFO L225 Difference]: With dead ends: 20 [2022-02-24 01:45:23,894 INFO L226 Difference]: Without dead ends: 15 [2022-02-24 01:45:23,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-24 01:45:23,895 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:45:23,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 23 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:45:23,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-02-24 01:45:23,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-02-24 01:45:23,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 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 01:45:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-02-24 01:45:23,900 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-02-24 01:45:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:23,900 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-02-24 01:45:23,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 01:45:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-02-24 01:45:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-24 01:45:23,901 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:23,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:23,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 01:45:23,901 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:23,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:23,902 INFO L85 PathProgramCache]: Analyzing trace with hash -181933682, now seen corresponding path program 1 times [2022-02-24 01:45:23,902 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:23,902 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095350699] [2022-02-24 01:45:23,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:23,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:25,691 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 01:45:25,692 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 01:45:25,700 WARN L132 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-02-24 01:45:25,701 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-02-24 01:45:25,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 01:45:25,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 01:45:25,707 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-24 01:45:25,708 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 01:45:25,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 01:45:25 BoogieIcfgContainer [2022-02-24 01:45:25,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 01:45:25,722 INFO L158 Benchmark]: Toolchain (without parser) took 2644.91ms. Allocated memory is still 185.6MB. Free memory was 136.3MB in the beginning and 136.7MB in the end (delta: -422.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 01:45:25,722 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 185.6MB. Free memory is still 153.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 01:45:25,722 INFO L158 Benchmark]: CACSL2BoogieTranslator took 146.19ms. Allocated memory is still 185.6MB. Free memory was 136.0MB in the beginning and 161.9MB in the end (delta: -25.9MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. [2022-02-24 01:45:25,722 INFO L158 Benchmark]: Boogie Preprocessor took 17.17ms. Allocated memory is still 185.6MB. Free memory was 161.9MB in the beginning and 160.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-24 01:45:25,723 INFO L158 Benchmark]: RCFGBuilder took 177.26ms. Allocated memory is still 185.6MB. Free memory was 160.3MB in the beginning and 150.9MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-24 01:45:25,723 INFO L158 Benchmark]: TraceAbstraction took 2299.41ms. Allocated memory is still 185.6MB. Free memory was 150.4MB in the beginning and 136.7MB in the end (delta: 13.7MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. [2022-02-24 01:45:25,724 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 185.6MB. Free memory is still 153.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 146.19ms. Allocated memory is still 185.6MB. Free memory was 136.0MB in the beginning and 161.9MB in the end (delta: -25.9MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.17ms. Allocated memory is still 185.6MB. Free memory was 161.9MB in the beginning and 160.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 177.26ms. Allocated memory is still 185.6MB. Free memory was 160.3MB in the beginning and 150.9MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2299.41ms. Allocated memory is still 185.6MB. Free memory was 150.4MB in the beginning and 136.7MB in the end (delta: 13.7MB). Peak memory consumption was 12.9MB. 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 - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] int i = __VERIFIER_nondet_int(); [L21] int c = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(c==0 && i==0)) [L23] COND TRUE i<100 [L24] c=c+i [L25] i=i+1 [L26] COND FALSE !(i<=0) [L23] COND FALSE !(i<100) [L28] CALL __VERIFIER_assert(c>=0) [L15] COND TRUE !cond [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 34 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 1 StatesRemovedByMinimization, 1 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 could not prove your program: unable to determine feasibility of some traces [2022-02-24 01:45:25,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...