/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-acceleration/simple_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 01:26:36,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 01:26:36,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 01:26:36,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 01:26:36,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 01:26:36,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 01:26:36,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 01:26:36,784 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 01:26:36,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 01:26:36,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 01:26:36,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 01:26:36,798 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 01:26:36,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 01:26:36,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 01:26:36,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 01:26:36,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 01:26:36,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 01:26:36,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 01:26:36,800 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 01:26:36,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 01:26:36,800 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 01:26:36,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 01:26:36,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 01:26:36,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 01:26:36,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 01:26:36,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 01:26:36,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:26:36,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 01:26:36,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 01:26:36,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 01:26:36,801 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 01:26:36,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 01:26:37,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 01:26:37,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 01:26:37,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 01:26:37,050 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 01:26:37,050 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 01:26:37,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_1-2.c [2022-02-15 01:26:37,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8380d1d/ea21580beed24884a0d247dcf0cd756d/FLAG561c94965 [2022-02-15 01:26:37,499 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 01:26:37,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_1-2.c [2022-02-15 01:26:37,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8380d1d/ea21580beed24884a0d247dcf0cd756d/FLAG561c94965 [2022-02-15 01:26:37,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8380d1d/ea21580beed24884a0d247dcf0cd756d [2022-02-15 01:26:37,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 01:26:37,909 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 01:26:37,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 01:26:37,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 01:26:37,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 01:26:37,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:26:37" (1/1) ... [2022-02-15 01:26:37,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@150e3334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:37, skipping insertion in model container [2022-02-15 01:26:37,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:26:37" (1/1) ... [2022-02-15 01:26:37,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 01:26:37,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 01:26:38,118 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-acceleration/simple_1-2.c[322,335] [2022-02-15 01:26:38,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:26:38,148 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 01:26:38,157 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-acceleration/simple_1-2.c[322,335] [2022-02-15 01:26:38,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:26:38,168 INFO L208 MainTranslator]: Completed translation [2022-02-15 01:26:38,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:38 WrapperNode [2022-02-15 01:26:38,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 01:26:38,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 01:26:38,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 01:26:38,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 01:26:38,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:38" (1/1) ... [2022-02-15 01:26:38,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:38" (1/1) ... [2022-02-15 01:26:38,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:38" (1/1) ... [2022-02-15 01:26:38,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:38" (1/1) ... [2022-02-15 01:26:38,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:38" (1/1) ... [2022-02-15 01:26:38,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:38" (1/1) ... [2022-02-15 01:26:38,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:38" (1/1) ... [2022-02-15 01:26:38,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 01:26:38,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 01:26:38,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 01:26:38,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 01:26:38,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:38" (1/1) ... [2022-02-15 01:26:38,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:26:38,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 01:26:38,214 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 01:26:38,235 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 01:26:38,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 01:26:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 01:26:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 01:26:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-15 01:26:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 01:26:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 01:26:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 01:26:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 01:26:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 01:26:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-15 01:26:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 01:26:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 01:26:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 01:26:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 01:26:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 01:26:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 01:26:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 01:26:38,319 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 01:26:38,320 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 01:26:38,442 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 01:26:38,446 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 01:26:38,446 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 01:26:38,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:26:38 BoogieIcfgContainer [2022-02-15 01:26:38,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 01:26:38,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 01:26:38,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 01:26:38,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 01:26:38,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:26:37" (1/3) ... [2022-02-15 01:26:38,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd43666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:26:38, skipping insertion in model container [2022-02-15 01:26:38,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:38" (2/3) ... [2022-02-15 01:26:38,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd43666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:26:38, skipping insertion in model container [2022-02-15 01:26:38,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:26:38" (3/3) ... [2022-02-15 01:26:38,454 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_1-2.c [2022-02-15 01:26:38,458 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 01:26:38,458 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 01:26:38,492 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 01:26:38,499 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 01:26:38,499 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 01:26:38,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 01:26:38,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-15 01:26:38,514 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:38,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:38,515 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:38,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:38,519 INFO L85 PathProgramCache]: Analyzing trace with hash -219174432, now seen corresponding path program 1 times [2022-02-15 01:26:38,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:38,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307823634] [2022-02-15 01:26:38,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:38,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:38,569 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:26:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:38,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:38,640 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 01:26:38,641 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:26:38,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307823634] [2022-02-15 01:26:38,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [307823634] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:26:38,642 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:26:38,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 01:26:38,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665527779] [2022-02-15 01:26:38,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:26:38,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 01:26:38,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:26:38,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 01:26:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 01:26:38,667 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 01:26:38,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:26:38,699 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-02-15 01:26:38,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 01:26:38,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2022-02-15 01:26:38,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:26:38,705 INFO L225 Difference]: With dead ends: 29 [2022-02-15 01:26:38,705 INFO L226 Difference]: Without dead ends: 12 [2022-02-15 01:26:38,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 01:26:38,712 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:26:38,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:26:38,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-02-15 01:26:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-02-15 01:26:38,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2022-02-15 01:26:38,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-02-15 01:26:38,754 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-02-15 01:26:38,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:26:38,754 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-02-15 01:26:38,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 01:26:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-02-15 01:26:38,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-15 01:26:38,755 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:38,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:38,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 01:26:38,756 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:38,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:38,756 INFO L85 PathProgramCache]: Analyzing trace with hash -222868516, now seen corresponding path program 1 times [2022-02-15 01:26:38,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:38,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777981413] [2022-02-15 01:26:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:38,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:38,759 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:26:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:38,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:38,848 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 01:26:38,848 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:26:38,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777981413] [2022-02-15 01:26:38,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [777981413] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:26:38,849 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:26:38,849 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 01:26:38,849 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867955999] [2022-02-15 01:26:38,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:26:38,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 01:26:38,850 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:26:38,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 01:26:38,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 01:26:38,851 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 01:26:38,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:26:38,871 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-02-15 01:26:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 01:26:38,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 11 [2022-02-15 01:26:38,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:26:38,872 INFO L225 Difference]: With dead ends: 18 [2022-02-15 01:26:38,872 INFO L226 Difference]: Without dead ends: 13 [2022-02-15 01:26:38,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 01:26:38,873 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:26:38,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:26:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-02-15 01:26:38,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-02-15 01:26:38,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-02-15 01:26:38,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-02-15 01:26:38,877 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-02-15 01:26:38,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:26:38,878 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-02-15 01:26:38,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 01:26:38,878 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-02-15 01:26:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-15 01:26:38,878 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:38,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:38,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 01:26:38,879 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:38,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:38,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1717471862, now seen corresponding path program 1 times [2022-02-15 01:26:38,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:38,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882058655] [2022-02-15 01:26:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:39,014 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:39,015 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:26:39,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:39,028 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_1.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_1.0) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-02-15 01:26:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:39,052 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_1.1) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_1.1) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-02-15 01:26:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:39,125 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 01:26:39,248 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:26:39,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882058655] [2022-02-15 01:26:39,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1882058655] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:26:39,249 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:26:39,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 01:26:39,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288560358] [2022-02-15 01:26:39,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:26:39,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 01:26:39,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:26:39,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 01:26:39,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 01:26:39,251 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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) [2022-02-15 01:26:39,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:26:39,297 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-02-15 01:26:39,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 01:26:39,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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 [2022-02-15 01:26:39,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:26:39,297 INFO L225 Difference]: With dead ends: 13 [2022-02-15 01:26:39,298 INFO L226 Difference]: Without dead ends: 0 [2022-02-15 01:26:39,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-02-15 01:26:39,299 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:26:39,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2022-02-15 01:26:39,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-15 01:26:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-15 01:26:39,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 01:26:39,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-15 01:26:39,300 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-02-15 01:26:39,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:26:39,301 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-15 01:26:39,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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) [2022-02-15 01:26:39,301 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-15 01:26:39,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-15 01:26:39,303 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-15 01:26:39,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 01:26:39,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-15 01:26:39,434 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-02-15 01:26:39,434 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-02-15 01:26:39,435 INFO L858 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-02-15 01:26:39,435 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-02-15 01:26:39,435 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-15 01:26:39,435 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-02-15 01:26:39,435 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-02-15 01:26:39,435 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-15 01:26:39,435 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-15 01:26:39,435 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-02-15 01:26:39,435 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 12 20) the Hoare annotation is: true [2022-02-15 01:26:39,435 INFO L861 garLoopResultBuilder]: At program point mainEXIT(lines 12 20) the Hoare annotation is: true [2022-02-15 01:26:39,436 INFO L854 garLoopResultBuilder]: At program point L15-2(lines 15 17) the Hoare annotation is: (or (= main_~x~0 0) (and (or (and (< 0 (div (+ 2 (* (- 1) main_~x~0)) (- 2))) (forall ((v_it_1 Int)) (or (not (<= (+ v_it_1 1) (div (+ 2 (* (- 1) main_~x~0)) (- 2)))) (< (mod (* v_it_1 2) 4294967296) 268435455) (not (<= 1 v_it_1)))) (= (mod main_~x~0 2) 0)) (= main_~x~0 2)) (< (mod (+ main_~x~0 4294967294) 4294967296) 268435455))) [2022-02-15 01:26:39,436 INFO L861 garLoopResultBuilder]: At program point mainFINAL(lines 12 20) the Hoare annotation is: true [2022-02-15 01:26:39,436 INFO L854 garLoopResultBuilder]: At program point L15-3(lines 15 17) the Hoare annotation is: (<= main_~x~0 (* (div main_~x~0 2) 2)) [2022-02-15 01:26:39,436 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2022-02-15 01:26:39,436 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2022-02-15 01:26:39,436 INFO L854 garLoopResultBuilder]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-02-15 01:26:39,436 INFO L854 garLoopResultBuilder]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-02-15 01:26:39,436 INFO L861 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2022-02-15 01:26:39,436 INFO L854 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-02-15 01:26:39,439 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-15 01:26:39,440 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 01:26:39,455 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] [2022-02-15 01:26:39,456 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] [2022-02-15 01:26:39,456 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] [2022-02-15 01:26:39,461 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] [2022-02-15 01:26:39,461 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] [2022-02-15 01:26:39,461 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] [2022-02-15 01:26:39,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 01:26:39 BoogieIcfgContainer [2022-02-15 01:26:39,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 01:26:39,466 INFO L158 Benchmark]: Toolchain (without parser) took 1556.58ms. Allocated memory is still 208.7MB. Free memory was 160.7MB in the beginning and 184.7MB in the end (delta: -24.0MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2022-02-15 01:26:39,466 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 208.7MB. Free memory is still 177.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 01:26:39,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.55ms. Allocated memory is still 208.7MB. Free memory was 160.5MB in the beginning and 186.5MB in the end (delta: -26.0MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-02-15 01:26:39,470 INFO L158 Benchmark]: Boogie Preprocessor took 18.23ms. Allocated memory is still 208.7MB. Free memory was 186.0MB in the beginning and 185.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 01:26:39,472 INFO L158 Benchmark]: RCFGBuilder took 258.93ms. Allocated memory is still 208.7MB. Free memory was 185.0MB in the beginning and 176.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-15 01:26:39,473 INFO L158 Benchmark]: TraceAbstraction took 1016.00ms. Allocated memory is still 208.7MB. Free memory was 175.5MB in the beginning and 184.7MB in the end (delta: -9.2MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. [2022-02-15 01:26:39,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 208.7MB. Free memory is still 177.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 256.55ms. Allocated memory is still 208.7MB. Free memory was 160.5MB in the beginning and 186.5MB in the end (delta: -26.0MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.23ms. Allocated memory is still 208.7MB. Free memory was 186.0MB in the beginning and 185.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 258.93ms. Allocated memory is still 208.7MB. Free memory was 185.0MB in the beginning and 176.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1016.00ms. Allocated memory is still 208.7MB. Free memory was 175.5MB in the beginning and 184.7MB in the end (delta: -9.2MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 5 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 35 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 15, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 30 PreInvPairs, 40 NumberOfFragments, 96 HoareAnnotationTreeSize, 30 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant [2022-02-15 01:26:39,484 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] [2022-02-15 01:26:39,484 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] [2022-02-15 01:26:39,484 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] [2022-02-15 01:26:39,485 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] [2022-02-15 01:26:39,485 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] [2022-02-15 01:26:39,485 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_it_1,QUANTIFIED] Derived loop invariant: x == 0 || ((((0 < (2 + -1 * x) / -2 && (forall v_it_1 : int :: (!(v_it_1 + 1 <= (2 + -1 * x) / -2) || v_it_1 * 2 % 4294967296 < 268435455) || !(1 <= v_it_1))) && x % 2 == 0) || x == 2) && (x + 4294967294) % 4294967296 < 268435455) - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! [2022-02-15 01:26:39,495 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...