/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/loops/sum03-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 01:12:23,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 01:12:23,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 01:12:23,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 01:12:23,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-15 01:12:23,734 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 01:12:23,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 01:12:23,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 01:12:23,736 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 01:12:23,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 01:12:23,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 01:12:23,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 01:12:23,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 01:12:23,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 01:12:23,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 01:12:23,737 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 01:12:23,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 01:12:23,737 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 01:12:23,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 01:12:23,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 01:12:23,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 01:12:23,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 01:12:23,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 01:12:23,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:12:23,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 01:12:23,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 01:12:23,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 01:12:23,742 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 01:12:23,743 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 01:12:23,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 01:12:23,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 01:12:23,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 01:12:23,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 01:12:23,993 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 01:12:23,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-1.i [2022-02-15 01:12:24,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eedcb2cbc/594d016b5a8b4413a08787fb443a06df/FLAG8f83461e5 [2022-02-15 01:12:24,443 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 01:12:24,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i [2022-02-15 01:12:24,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eedcb2cbc/594d016b5a8b4413a08787fb443a06df/FLAG8f83461e5 [2022-02-15 01:12:24,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eedcb2cbc/594d016b5a8b4413a08787fb443a06df [2022-02-15 01:12:24,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 01:12:24,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 01:12:24,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 01:12:24,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 01:12:24,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 01:12:24,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:12:24" (1/1) ... [2022-02-15 01:12:24,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3acf1496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:24, skipping insertion in model container [2022-02-15 01:12:24,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:12:24" (1/1) ... [2022-02-15 01:12:24,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 01:12:24,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 01:12:25,057 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] [2022-02-15 01:12:25,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:12:25,096 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 01:12:25,126 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] [2022-02-15 01:12:25,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:12:25,146 INFO L208 MainTranslator]: Completed translation [2022-02-15 01:12:25,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:25 WrapperNode [2022-02-15 01:12:25,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 01:12:25,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 01:12:25,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 01:12:25,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 01:12:25,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:25" (1/1) ... [2022-02-15 01:12:25,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:25" (1/1) ... [2022-02-15 01:12:25,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:25" (1/1) ... [2022-02-15 01:12:25,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:25" (1/1) ... [2022-02-15 01:12:25,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:25" (1/1) ... [2022-02-15 01:12:25,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:25" (1/1) ... [2022-02-15 01:12:25,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:25" (1/1) ... [2022-02-15 01:12:25,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 01:12:25,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 01:12:25,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 01:12:25,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 01:12:25,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:25" (1/1) ... [2022-02-15 01:12:25,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:12:25,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 01:12:25,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-15 01:12:25,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-15 01:12:25,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 01:12:25,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 01:12:25,257 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 01:12:25,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-15 01:12:25,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 01:12:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 01:12:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 01:12:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-15 01:12:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-15 01:12:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 01:12:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 01:12:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-15 01:12:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-02-15 01:12:25,260 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 01:12:25,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 01:12:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 01:12:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 01:12:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 01:12:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 01:12:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 01:12:25,323 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 01:12:25,325 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 01:12:25,440 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 01:12:25,449 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 01:12:25,449 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 01:12:25,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:12:25 BoogieIcfgContainer [2022-02-15 01:12:25,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 01:12:25,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 01:12:25,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 01:12:25,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 01:12:25,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:12:24" (1/3) ... [2022-02-15 01:12:25,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a12c75b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:12:25, skipping insertion in model container [2022-02-15 01:12:25,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:25" (2/3) ... [2022-02-15 01:12:25,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a12c75b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:12:25, skipping insertion in model container [2022-02-15 01:12:25,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:12:25" (3/3) ... [2022-02-15 01:12:25,468 INFO L111 eAbstractionObserver]: Analyzing ICFG sum03-1.i [2022-02-15 01:12:25,472 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 01:12:25,472 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 01:12:25,535 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 01:12:25,543 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 [2022-02-15 01:12:25,543 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 01:12:25,558 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) [2022-02-15 01:12:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-15 01:12:25,567 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:12:25,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:12:25,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:12:25,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:12:25,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1946695220, now seen corresponding path program 1 times [2022-02-15 01:12:25,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:12:25,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578474527] [2022-02-15 01:12:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:12:25,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:12:25,640 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:12:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:12:26,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:12:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:12:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:12:26,072 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:12:26,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578474527] [2022-02-15 01:12:26,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [578474527] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:12:26,075 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:12:26,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 01:12:26,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905719596] [2022-02-15 01:12:26,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:12:26,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 01:12:26,082 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:12:26,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 01:12:26,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-02-15 01:12:26,115 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) [2022-02-15 01:12:26,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:12:26,358 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2022-02-15 01:12:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 01:12:26,360 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 [2022-02-15 01:12:26,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:12:26,365 INFO L225 Difference]: With dead ends: 41 [2022-02-15 01:12:26,366 INFO L226 Difference]: Without dead ends: 27 [2022-02-15 01:12:26,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-02-15 01:12:26,371 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 [2022-02-15 01:12:26,372 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] [2022-02-15 01:12:26,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-15 01:12:26,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-02-15 01:12:26,433 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) [2022-02-15 01:12:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-02-15 01:12:26,435 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 13 [2022-02-15 01:12:26,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:12:26,435 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-02-15 01:12:26,436 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) [2022-02-15 01:12:26,436 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-02-15 01:12:26,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 01:12:26,437 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:12:26,437 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:12:26,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 01:12:26,437 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:12:26,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:12:26,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1052577873, now seen corresponding path program 1 times [2022-02-15 01:12:26,438 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:12:26,438 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550938616] [2022-02-15 01:12:26,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:12:49,244 WARN L228 SmtUtils]: Spent 22.62s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 564] de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.jordan.JordanLoopAcceleration.buildAccelerationFormula) [2022-02-15 01:12:49,250 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:12:49,251 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:12:49,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:12:49,265 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 1) .v_it_1.0) (* 4294967296 (div (+ main_~x~0_5 .v_it_1.0) 4294967296)) 10) 0)) [2022-02-15 01:12:49,270 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (let ((.cse0 (* 2 .v_it_1.0))) (= (+ .cse0 main_~sn~0_5 (* (- 4294967296) (div (+ .cse0 main_~sn~0_5 2) 4294967296)) 2) (let ((.cse1 (* 2 main_~x~0_5))) (+ .cse0 .cse1 (* (- 4294967296) (div (+ .cse0 .cse1 2) 4294967296)) 2)))) [2022-02-15 01:12:49,270 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (= (+ (* 2 .v_it_1.0) main_~sn~0_5 2) 0) [2022-02-15 01:12:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:12:49,314 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 1) .v_it_1.1) (* 4294967296 (div (+ main_~x~0_5 .v_it_1.1) 4294967296)) 10) 0)) [2022-02-15 01:12:49,314 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (let ((.cse0 (* 2 .v_it_1.1))) (= (+ .cse0 main_~sn~0_5 (* (- 4294967296) (div (+ .cse0 main_~sn~0_5 2) 4294967296)) 2) (let ((.cse1 (* 2 main_~x~0_5))) (+ .cse0 .cse1 (* (- 4294967296) (div (+ .cse0 .cse1 2) 4294967296)) 2)))) [2022-02-15 01:12:49,315 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (= (+ (* 2 .v_it_1.1) main_~sn~0_5 2) 0) [2022-02-15 01:12:49,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:12:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:12:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:12:50,277 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:12:50,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550938616] [2022-02-15 01:12:50,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [550938616] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:12:50,278 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:12:50,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 01:12:50,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579721412] [2022-02-15 01:12:50,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:12:50,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 01:12:50,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:12:50,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 01:12:50,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-15 01:12:50,281 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 11 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) [2022-02-15 01:12:50,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:12:50,604 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-02-15 01:12:50,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 01:12:50,605 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 11 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 [2022-02-15 01:12:50,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:12:50,606 INFO L225 Difference]: With dead ends: 35 [2022-02-15 01:12:50,606 INFO L226 Difference]: Without dead ends: 33 [2022-02-15 01:12:50,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-02-15 01:12:50,608 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:12:50,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 79 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 55 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2022-02-15 01:12:50,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-15 01:12:50,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2022-02-15 01:12:50,623 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) [2022-02-15 01:12:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-02-15 01:12:50,624 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2022-02-15 01:12:50,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:12:50,624 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-02-15 01:12:50,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 11 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) [2022-02-15 01:12:50,625 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-02-15 01:12:50,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 01:12:50,626 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:12:50,626 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:12:50,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 01:12:50,626 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:12:50,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:12:50,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1109836175, now seen corresponding path program 1 times [2022-02-15 01:12:50,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:12:50,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170741707] [2022-02-15 01:12:50,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:12:50,886 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:12:50,887 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:12:50,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:12:50,894 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 1) .v_it_2.0) (* 4294967296 (div (+ main_~x~0_5 .v_it_2.0) 4294967296)) 10) 0)) [2022-02-15 01:12:50,895 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (let ((.cse1 (* 2 .v_it_2.0))) (= (let ((.cse0 (* 2 main_~x~0_5))) (+ .cse0 .cse1 (* (- 4294967296) (div (+ .cse0 .cse1 2) 4294967296)) 2)) (+ .cse1 main_~sn~0_5 (* (- 4294967296) (div (+ .cse1 main_~sn~0_5 2) 4294967296)) 2))) [2022-02-15 01:12:50,895 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (= (+ (* 2 .v_it_2.0) main_~sn~0_5 2) 0) [2022-02-15 01:12:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-02-15 01:12:50,955 WARN L132 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-02-15 01:12:50,955 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-02-15 01:12:50,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-15 01:12:50,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 01:12:50,964 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-15 01:12:50,966 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 01:12:50,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 01:12:50 BoogieIcfgContainer [2022-02-15 01:12:50,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 01:12:50,979 INFO L158 Benchmark]: Toolchain (without parser) took 26119.38ms. Allocated memory was 200.3MB in the beginning and 286.3MB in the end (delta: 86.0MB). Free memory was 144.9MB in the beginning and 98.4MB in the end (delta: 46.5MB). Peak memory consumption was 132.4MB. Max. memory is 8.0GB. [2022-02-15 01:12:50,979 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 160.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 01:12:50,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.01ms. Allocated memory was 200.3MB in the beginning and 286.3MB in the end (delta: 86.0MB). Free memory was 144.7MB in the beginning and 259.4MB in the end (delta: -114.7MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. [2022-02-15 01:12:50,986 INFO L158 Benchmark]: Boogie Preprocessor took 36.94ms. Allocated memory is still 286.3MB. Free memory was 259.4MB in the beginning and 258.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 01:12:50,986 INFO L158 Benchmark]: RCFGBuilder took 265.32ms. Allocated memory is still 286.3MB. Free memory was 258.3MB in the beginning and 246.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-15 01:12:50,986 INFO L158 Benchmark]: TraceAbstraction took 25526.17ms. Allocated memory is still 286.3MB. Free memory was 246.3MB in the beginning and 98.4MB in the end (delta: 147.9MB). Peak memory consumption was 147.8MB. Max. memory is 8.0GB. [2022-02-15 01:12:50,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 160.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 285.01ms. Allocated memory was 200.3MB in the beginning and 286.3MB in the end (delta: 86.0MB). Free memory was 144.7MB in the beginning and 259.4MB in the end (delta: -114.7MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.94ms. Allocated memory is still 286.3MB. Free memory was 259.4MB in the beginning and 258.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 265.32ms. Allocated memory is still 286.3MB. Free memory was 258.3MB in the beginning and 246.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 25526.17ms. Allocated memory is still 286.3MB. Free memory was 246.3MB in the beginning and 98.4MB in the end (delta: 147.9MB). Peak memory consumption was 147.8MB. 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: 15]: 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: [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: 25.4s, 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, 42 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 112 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 33 IncrementalHoareTripleChecker+Unchecked, 89 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 120 IncrementalHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 23 mSDtfsCounter, 120 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.0s 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 could not prove your program: unable to determine feasibility of some traces [2022-02-15 01:12:51,011 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...