/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/terminator_02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 01:12:45,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 01:12:45,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 01:12:45,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 01:12:45,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 01:12:45,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 01:12:45,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 01:12:45,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-24 01:12:45,492 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 01:12:45,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 01:12:45,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 01:12:45,494 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-24 01:12:45,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 01:12:45,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-24 01:12:45,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 01:12:45,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 01:12:45,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 01:12:45,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 01:12:45,495 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-24 01:12:45,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 01:12:45,495 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 01:12:45,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 01:12:45,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 01:12:45,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 01:12:45,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 01:12:45,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 01:12:45,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 01:12:45,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 01:12:45,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 01:12:45,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 01:12:45,496 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-24 01:12:45,496 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 01:12:45,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 01:12:45,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 01:12:45,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 01:12:45,764 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 01:12:45,764 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 01:12:45,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-1.c [2022-02-24 01:12:45,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79aef3f15/f9f5cd0fd93a42d1b2d67d8c487f2d15/FLAG3f07ae979 [2022-02-24 01:12:46,155 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 01:12:46,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-1.c [2022-02-24 01:12:46,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79aef3f15/f9f5cd0fd93a42d1b2d67d8c487f2d15/FLAG3f07ae979 [2022-02-24 01:12:46,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79aef3f15/f9f5cd0fd93a42d1b2d67d8c487f2d15 [2022-02-24 01:12:46,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 01:12:46,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 01:12:46,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 01:12:46,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 01:12:46,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 01:12:46,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 01:12:46" (1/1) ... [2022-02-24 01:12:46,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@868a635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:46, skipping insertion in model container [2022-02-24 01:12:46,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 01:12:46" (1/1) ... [2022-02-24 01:12:46,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 01:12:46,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 01:12:46,737 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_02-1.c[327,340] [2022-02-24 01:12:46,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 01:12:46,755 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 01:12:46,764 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_02-1.c[327,340] [2022-02-24 01:12:46,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 01:12:46,776 INFO L208 MainTranslator]: Completed translation [2022-02-24 01:12:46,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:46 WrapperNode [2022-02-24 01:12:46,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 01:12:46,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 01:12:46,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 01:12:46,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 01:12:46,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:46" (1/1) ... [2022-02-24 01:12:46,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:46" (1/1) ... [2022-02-24 01:12:46,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:46" (1/1) ... [2022-02-24 01:12:46,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:46" (1/1) ... [2022-02-24 01:12:46,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:46" (1/1) ... [2022-02-24 01:12:46,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:46" (1/1) ... [2022-02-24 01:12:46,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:46" (1/1) ... [2022-02-24 01:12:46,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 01:12:46,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 01:12:46,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 01:12:46,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 01:12:46,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:46" (1/1) ... [2022-02-24 01:12:46,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 01:12:46,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 01:12:46,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-24 01:12:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 01:12:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 01:12:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 01:12:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-24 01:12:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 01:12:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 01:12:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 01:12:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 01:12:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 01:12:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-24 01:12:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 01:12:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-02-24 01:12:46,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-24 01:12:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 01:12:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 01:12:46,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 01:12:46,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 01:12:46,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 01:12:46,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 01:12:46,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 01:12:46,934 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 01:12:46,935 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 01:12:47,043 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 01:12:47,047 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 01:12:47,047 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-24 01:12:47,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 01:12:47 BoogieIcfgContainer [2022-02-24 01:12:47,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 01:12:47,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 01:12:47,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 01:12:47,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 01:12:47,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 01:12:46" (1/3) ... [2022-02-24 01:12:47,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1046de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 01:12:47, skipping insertion in model container [2022-02-24 01:12:47,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:46" (2/3) ... [2022-02-24 01:12:47,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1046de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 01:12:47, skipping insertion in model container [2022-02-24 01:12:47,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 01:12:47" (3/3) ... [2022-02-24 01:12:47,064 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2022-02-24 01:12:47,067 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 01:12:47,067 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 01:12:47,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 01:12:47,155 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-02-24 01:12:47,155 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 01:12:47,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-24 01:12:47,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-24 01:12:47,170 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:47,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:47,170 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:47,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:47,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1706373939, now seen corresponding path program 1 times [2022-02-24 01:12:47,181 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:47,181 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061704927] [2022-02-24 01:12:47,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:47,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:47,231 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:12:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:47,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:47,353 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:47,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061704927] [2022-02-24 01:12:47,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1061704927] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:47,355 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:47,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-24 01:12:47,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869809059] [2022-02-24 01:12:47,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:47,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-24 01:12:47,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:47,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-24 01:12:47,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-24 01:12:47,384 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 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) [2022-02-24 01:12:47,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:47,425 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-02-24 01:12:47,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-24 01:12:47,429 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 [2022-02-24 01:12:47,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:47,439 INFO L225 Difference]: With dead ends: 32 [2022-02-24 01:12:47,440 INFO L226 Difference]: Without dead ends: 13 [2022-02-24 01:12:47,442 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 [2022-02-24 01:12:47,446 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 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 [2022-02-24 01:12:47,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:12:47,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-02-24 01:12:47,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-02-24 01:12:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-02-24 01:12:47,471 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2022-02-24 01:12:47,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:47,472 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-02-24 01:12:47,472 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) [2022-02-24 01:12:47,472 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-02-24 01:12:47,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-24 01:12:47,473 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:47,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:47,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 01:12:47,474 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:47,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:47,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1697138729, now seen corresponding path program 1 times [2022-02-24 01:12:47,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:47,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845281137] [2022-02-24 01:12:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:47,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:47,481 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:12:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-24 01:12:47,511 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-24 01:12:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-24 01:12:47,541 INFO L138 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-24 01:12:47,541 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-24 01:12:47,546 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 01:12:47,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 01:12:47,552 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-24 01:12:47,555 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 01:12:47,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 01:12:47 BoogieIcfgContainer [2022-02-24 01:12:47,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 01:12:47,571 INFO L158 Benchmark]: Toolchain (without parser) took 970.59ms. Allocated memory is still 205.5MB. Free memory was 153.8MB in the beginning and 141.8MB in the end (delta: 12.0MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2022-02-24 01:12:47,571 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 205.5MB. Free memory is still 170.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 01:12:47,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.16ms. Allocated memory is still 205.5MB. Free memory was 153.6MB in the beginning and 179.2MB in the end (delta: -25.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-24 01:12:47,574 INFO L158 Benchmark]: Boogie Preprocessor took 34.78ms. Allocated memory is still 205.5MB. Free memory was 179.2MB in the beginning and 177.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-24 01:12:47,575 INFO L158 Benchmark]: RCFGBuilder took 235.67ms. Allocated memory is still 205.5MB. Free memory was 177.8MB in the beginning and 168.0MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-24 01:12:47,577 INFO L158 Benchmark]: TraceAbstraction took 520.52ms. Allocated memory is still 205.5MB. Free memory was 167.3MB in the beginning and 141.8MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2022-02-24 01:12:47,583 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 205.5MB. Free memory is still 170.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 176.16ms. Allocated memory is still 205.5MB. Free memory was 153.6MB in the beginning and 179.2MB in the end (delta: -25.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.78ms. Allocated memory is still 205.5MB. Free memory was 179.2MB in the beginning and 177.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 235.67ms. Allocated memory is still 205.5MB. Free memory was 177.8MB in the beginning and 168.0MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 520.52ms. Allocated memory is still 205.5MB. Free memory was 167.3MB in the beginning and 141.8MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int x=__VERIFIER_nondet_int(); [L17] int y=__VERIFIER_nondet_int(); [L18] int z=__VERIFIER_nondet_int(); [L20] COND FALSE !(x<100 && 100