/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loops/terminator_02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 02:46:12,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 02:46:12,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 02:46:12,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 02:46:12,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 02:46:12,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 02:46:12,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 02:46:12,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 02:46:12,196 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 02:46:12,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 02:46:12,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 02:46:12,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 02:46:12,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 02:46:12,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 02:46:12,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 02:46:12,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 02:46:12,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 02:46:12,197 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 02:46:12,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 02:46:12,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 02:46:12,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 02:46:12,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 02:46:12,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 02:46:12,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:46:12,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 02:46:12,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 02:46:12,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 02:46:12,199 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 02:46:12,199 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 02:46:12,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 02:46:12,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 02:46:12,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 02:46:12,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 02:46:12,409 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 02:46:12,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-2.c [2022-02-24 02:46:12,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c651a703/675c943451504037a00c24603906784a/FLAG949b31ff0 [2022-02-24 02:46:12,809 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 02:46:12,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2.c [2022-02-24 02:46:12,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c651a703/675c943451504037a00c24603906784a/FLAG949b31ff0 [2022-02-24 02:46:12,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c651a703/675c943451504037a00c24603906784a [2022-02-24 02:46:12,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 02:46:12,830 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 02:46:12,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 02:46:12,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 02:46:12,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 02:46:12,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:46:12" (1/1) ... [2022-02-24 02:46:12,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e16f7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:46:12, skipping insertion in model container [2022-02-24 02:46:12,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:46:12" (1/1) ... [2022-02-24 02:46:12,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 02:46:12,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 02:46:13,027 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/terminator_02-2.c[414,427] [2022-02-24 02:46:13,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:46:13,054 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 02:46:13,064 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/terminator_02-2.c[414,427] [2022-02-24 02:46:13,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:46:13,085 INFO L208 MainTranslator]: Completed translation [2022-02-24 02:46:13,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:46:13 WrapperNode [2022-02-24 02:46:13,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 02:46:13,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 02:46:13,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 02:46:13,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 02:46:13,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:46:13" (1/1) ... [2022-02-24 02:46:13,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:46:13" (1/1) ... [2022-02-24 02:46:13,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:46:13" (1/1) ... [2022-02-24 02:46:13,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:46:13" (1/1) ... [2022-02-24 02:46:13,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:46:13" (1/1) ... [2022-02-24 02:46:13,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:46:13" (1/1) ... [2022-02-24 02:46:13,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:46:13" (1/1) ... [2022-02-24 02:46:13,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 02:46:13,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 02:46:13,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 02:46:13,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 02:46:13,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:46:13" (1/1) ... [2022-02-24 02:46:13,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:46:13,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 02:46:13,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-24 02:46:13,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-24 02:46:13,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 02:46:13,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 02:46:13,198 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 02:46:13,198 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-24 02:46:13,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-24 02:46:13,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 02:46:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 02:46:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 02:46:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 02:46:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 02:46:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-24 02:46:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-24 02:46:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 02:46:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-02-24 02:46:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 02:46:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 02:46:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 02:46:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 02:46:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 02:46:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 02:46:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 02:46:13,253 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 02:46:13,254 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 02:46:13,407 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 02:46:13,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 02:46:13,411 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-24 02:46:13,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:46:13 BoogieIcfgContainer [2022-02-24 02:46:13,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 02:46:13,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 02:46:13,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 02:46:13,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 02:46:13,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 02:46:12" (1/3) ... [2022-02-24 02:46:13,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8b457d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:46:13, skipping insertion in model container [2022-02-24 02:46:13,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:46:13" (2/3) ... [2022-02-24 02:46:13,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8b457d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:46:13, skipping insertion in model container [2022-02-24 02:46:13,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:46:13" (3/3) ... [2022-02-24 02:46:13,419 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_02-2.c [2022-02-24 02:46:13,423 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 02:46:13,424 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 02:46:13,455 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 02:46:13,461 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-02-24 02:46:13,461 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 02:46:13,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-24 02:46:13,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-24 02:46:13,477 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:13,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:13,478 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1267907657, now seen corresponding path program 1 times [2022-02-24 02:46:13,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:13,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784034173] [2022-02-24 02:46:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:13,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:13,547 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:46:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:13,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:46:13,796 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:13,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784034173] [2022-02-24 02:46:13,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1784034173] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:13,800 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:13,800 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 02:46:13,801 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522248192] [2022-02-24 02:46:13,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:13,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 02:46:13,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:13,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 02:46:13,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:46:13,838 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 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 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:14,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:14,016 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2022-02-24 02:46:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 02:46:14,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 15 [2022-02-24 02:46:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:14,026 INFO L225 Difference]: With dead ends: 36 [2022-02-24 02:46:14,027 INFO L226 Difference]: Without dead ends: 0 [2022-02-24 02:46:14,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:46:14,032 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 25 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:14,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 47 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:46:14,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-24 02:46:14,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-24 02:46:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-24 02:46:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-24 02:46:14,051 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-02-24 02:46:14,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:14,051 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-24 02:46:14,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:14,051 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-24 02:46:14,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-24 02:46:14,054 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 02:46:14,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 02:46:14,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-24 02:46:14,136 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-02-24 02:46:14,136 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-02-24 02:46:14,136 INFO L858 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-02-24 02:46:14,136 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2022-02-24 02:46:14,137 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-02-24 02:46:14,137 INFO L858 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2022-02-24 02:46:14,137 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2022-02-24 02:46:14,137 INFO L861 garLoopResultBuilder]: At program point L29(lines 29 34) the Hoare annotation is: true [2022-02-24 02:46:14,137 INFO L861 garLoopResultBuilder]: At program point L29-2(lines 26 35) the Hoare annotation is: true [2022-02-24 02:46:14,137 INFO L861 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-02-24 02:46:14,137 INFO L861 garLoopResultBuilder]: At program point mainEXIT(lines 18 40) the Hoare annotation is: true [2022-02-24 02:46:14,138 INFO L861 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2022-02-24 02:46:14,138 INFO L861 garLoopResultBuilder]: At program point mainFINAL(lines 18 40) the Hoare annotation is: true [2022-02-24 02:46:14,138 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 18 40) the Hoare annotation is: true [2022-02-24 02:46:14,138 INFO L861 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2022-02-24 02:46:14,138 INFO L854 garLoopResultBuilder]: At program point L26-2(lines 26 35) the Hoare annotation is: (or (< 99 main_~x~0) (<= main_~z~0 100)) [2022-02-24 02:46:14,138 INFO L861 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-02-24 02:46:14,138 INFO L854 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (or (< 99 main_~x~0) (<= main_~z~0 100)) [2022-02-24 02:46:14,138 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-02-24 02:46:14,139 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|)) [2022-02-24 02:46:14,139 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-02-24 02:46:14,139 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-02-24 02:46:14,139 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-24 02:46:14,139 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-24 02:46:14,139 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-02-24 02:46:14,139 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 14) the Hoare annotation is: true [2022-02-24 02:46:14,139 INFO L854 garLoopResultBuilder]: At program point L11(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-02-24 02:46:14,139 INFO L854 garLoopResultBuilder]: At program point L10(lines 10 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-02-24 02:46:14,140 INFO L854 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 9 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-02-24 02:46:14,140 INFO L854 garLoopResultBuilder]: At program point L10-2(lines 9 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-02-24 02:46:14,140 INFO L854 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-02-24 02:46:14,143 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-24 02:46:14,144 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 02:46:14,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 02:46:14 BoogieIcfgContainer [2022-02-24 02:46:14,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 02:46:14,156 INFO L158 Benchmark]: Toolchain (without parser) took 1325.48ms. Allocated memory is still 180.4MB. Free memory was 129.6MB in the beginning and 110.2MB in the end (delta: 19.4MB). Peak memory consumption was 19.2MB. Max. memory is 8.0GB. [2022-02-24 02:46:14,156 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory was 145.7MB in the beginning and 145.7MB in the end (delta: 82.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 02:46:14,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.50ms. Allocated memory is still 180.4MB. Free memory was 129.4MB in the beginning and 156.6MB in the end (delta: -27.1MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. [2022-02-24 02:46:14,157 INFO L158 Benchmark]: Boogie Preprocessor took 36.05ms. Allocated memory is still 180.4MB. Free memory was 156.6MB in the beginning and 155.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-24 02:46:14,157 INFO L158 Benchmark]: RCFGBuilder took 289.62ms. Allocated memory is still 180.4MB. Free memory was 155.0MB in the beginning and 144.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-24 02:46:14,158 INFO L158 Benchmark]: TraceAbstraction took 741.51ms. Allocated memory is still 180.4MB. Free memory was 144.0MB in the beginning and 110.2MB in the end (delta: 33.8MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-02-24 02:46:14,159 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 180.4MB. Free memory was 145.7MB in the beginning and 145.7MB in the end (delta: 82.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 253.50ms. Allocated memory is still 180.4MB. Free memory was 129.4MB in the beginning and 156.6MB in the end (delta: -27.1MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.05ms. Allocated memory is still 180.4MB. Free memory was 156.6MB in the beginning and 155.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 289.62ms. Allocated memory is still 180.4MB. Free memory was 155.0MB in the beginning and 144.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 741.51ms. Allocated memory is still 180.4MB. Free memory was 144.0MB in the beginning and 110.2MB in the end (delta: 33.8MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, 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, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 26 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 30 PreInvPairs, 40 NumberOfFragments, 67 HoareAnnotationTreeSize, 30 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 24 FomulaSimplificationsInter, 15 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: 26]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 18]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-02-24 02:46:14,186 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...