/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:53:16,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:53:16,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:53:16,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:53:17,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:53:17,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:53:17,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:53:17,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:53:17,062 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:53:17,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:53:17,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:53:17,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:53:17,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:53:17,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:53:17,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:53:17,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:53:17,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:53:17,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:53:17,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:53:17,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:53:17,066 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:53:17,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:53:17,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:53:17,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:53:17,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:53:17,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:53:17,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:53:17,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:53:17,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:53:17,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:53:17,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:53:17,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:53:17,515 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:53:17,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-11-07 00:53:17,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8318fc561/ef148c71050e4b559e6882da703f2400/FLAG949c09b00 [2020-11-07 00:53:18,299 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:53:18,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-11-07 00:53:18,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8318fc561/ef148c71050e4b559e6882da703f2400/FLAG949c09b00 [2020-11-07 00:53:18,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8318fc561/ef148c71050e4b559e6882da703f2400 [2020-11-07 00:53:18,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:53:18,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:53:18,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:53:18,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:53:18,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:53:18,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:18" (1/1) ... [2020-11-07 00:53:18,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4047da06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:18, skipping insertion in model container [2020-11-07 00:53:18,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:18" (1/1) ... [2020-11-07 00:53:18,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:53:18,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:53:18,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:53:18,888 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:53:18,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:53:18,921 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:53:18,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:18 WrapperNode [2020-11-07 00:53:18,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:53:18,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:53:18,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:53:18,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:53:18,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:18" (1/1) ... [2020-11-07 00:53:18,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:18" (1/1) ... [2020-11-07 00:53:18,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:18" (1/1) ... [2020-11-07 00:53:18,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:18" (1/1) ... [2020-11-07 00:53:18,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:18" (1/1) ... [2020-11-07 00:53:18,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:18" (1/1) ... [2020-11-07 00:53:18,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:18" (1/1) ... [2020-11-07 00:53:18,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:53:18,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:53:18,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:53:18,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:53:18,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:53:19,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:53:19,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:53:19,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:53:19,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-11-07 00:53:19,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:53:19,042 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:53:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:53:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:53:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:53:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-11-07 00:53:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:53:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:53:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:53:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:53:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:53:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:53:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:53:19,297 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:53:19,298 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 00:53:19,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:19 BoogieIcfgContainer [2020-11-07 00:53:19,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:53:19,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:53:19,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:53:19,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:53:19,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:18" (1/3) ... [2020-11-07 00:53:19,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d477a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:19, skipping insertion in model container [2020-11-07 00:53:19,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:18" (2/3) ... [2020-11-07 00:53:19,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d477a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:19, skipping insertion in model container [2020-11-07 00:53:19,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:19" (3/3) ... [2020-11-07 00:53:19,313 INFO L111 eAbstractionObserver]: Analyzing ICFG test_cut_trace.i [2020-11-07 00:53:19,332 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:53:19,337 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:53:19,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:53:19,475 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:53:19,475 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:53:19,476 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:53:19,476 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:53:19,477 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:53:19,477 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:53:19,477 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:53:19,478 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:53:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-07 00:53:19,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-07 00:53:19,519 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:53:19,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:53:19,521 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:53:19,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:53:19,532 INFO L82 PathProgramCache]: Analyzing trace with hash -138171233, now seen corresponding path program 1 times [2020-11-07 00:53:19,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:53:19,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422486856] [2020-11-07 00:53:19,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:53:19,708 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:53:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:19,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:53:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:53:19,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422486856] [2020-11-07 00:53:19,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:53:19,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:53:19,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004516297] [2020-11-07 00:53:19,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:53:19,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:53:20,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:53:20,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:53:20,024 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-11-07 00:53:20,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:53:20,237 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-11-07 00:53:20,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:53:20,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-07 00:53:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:53:20,249 INFO L225 Difference]: With dead ends: 44 [2020-11-07 00:53:20,249 INFO L226 Difference]: Without dead ends: 22 [2020-11-07 00:53:20,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:53:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-07 00:53:20,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-07 00:53:20,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-07 00:53:20,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-11-07 00:53:20,311 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 19 [2020-11-07 00:53:20,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:53:20,311 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-11-07 00:53:20,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:53:20,315 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-11-07 00:53:20,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-07 00:53:20,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:53:20,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:53:20,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:53:20,317 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:53:20,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:53:20,319 INFO L82 PathProgramCache]: Analyzing trace with hash 289293054, now seen corresponding path program 1 times [2020-11-07 00:53:20,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:53:20,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093971217] [2020-11-07 00:53:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:53:20,324 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:53:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:20,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:53:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:53:20,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093971217] [2020-11-07 00:53:20,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:53:20,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 00:53:20,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488416143] [2020-11-07 00:53:20,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 00:53:20,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:53:20,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 00:53:20,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:53:20,504 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 5 states. [2020-11-07 00:53:20,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:53:20,676 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-11-07 00:53:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 00:53:20,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-11-07 00:53:20,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:53:20,678 INFO L225 Difference]: With dead ends: 22 [2020-11-07 00:53:20,678 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 00:53:20,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:53:20,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 00:53:20,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 00:53:20,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 00:53:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 00:53:20,682 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-11-07 00:53:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:53:20,684 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 00:53:20,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 00:53:20,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 00:53:20,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 00:53:20,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:53:20,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 00:53:21,017 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 00:53:21,018 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 00:53:21,018 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 00:53:21,018 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 00:53:21,019 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 00:53:21,019 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 00:53:21,019 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 00:53:21,019 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 00:53:21,019 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 00:53:21,019 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-11-07 00:53:21,020 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-07 00:53:21,020 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 00:53:21,020 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 00:53:21,020 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 00:53:21,021 INFO L269 CegarLoopResult]: At program point __blast_assertEXIT(lines 6 9) the Hoare annotation is: true [2020-11-07 00:53:21,021 INFO L269 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-11-07 00:53:21,021 INFO L269 CegarLoopResult]: At program point __blast_assertFINAL(lines 6 9) the Hoare annotation is: true [2020-11-07 00:53:21,021 INFO L269 CegarLoopResult]: At program point __blast_assertENTRY(lines 6 9) the Hoare annotation is: true [2020-11-07 00:53:21,021 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 00:53:21,022 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 00:53:21,022 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 00:53:21,022 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 00:53:21,022 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 15 22) the Hoare annotation is: true [2020-11-07 00:53:21,022 INFO L262 CegarLoopResult]: At program point mainEXIT(lines 15 22) the Hoare annotation is: (= main_~z~0 0) [2020-11-07 00:53:21,023 INFO L262 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (= main_~z~0 0) (= main_~a~0 0)) [2020-11-07 00:53:21,023 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (= main_~z~0 0) [2020-11-07 00:53:21,023 INFO L262 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: false [2020-11-07 00:53:21,023 INFO L269 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-11-07 00:53:21,023 INFO L262 CegarLoopResult]: At program point L20-3(line 20) the Hoare annotation is: (= main_~z~0 0) [2020-11-07 00:53:21,024 INFO L269 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-11-07 00:53:21,024 INFO L262 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: false [2020-11-07 00:53:21,024 INFO L262 CegarLoopResult]: At program point L18-3(line 18) the Hoare annotation is: (= main_~z~0 0) [2020-11-07 00:53:21,024 INFO L262 CegarLoopResult]: At program point mainFINAL(lines 15 22) the Hoare annotation is: (= main_~z~0 0) [2020-11-07 00:53:21,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:53:21 BoogieIcfgContainer [2020-11-07 00:53:21,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:53:21,047 INFO L168 Benchmark]: Toolchain (without parser) took 2397.36 ms. Allocated memory is still 161.5 MB. Free memory was 138.3 MB in the beginning and 113.4 MB in the end (delta: 24.9 MB). Peak memory consumption was 56.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:53:21,049 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 161.5 MB. Free memory was 135.2 MB in the beginning and 135.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:53:21,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.99 ms. Allocated memory is still 161.5 MB. Free memory was 137.7 MB in the beginning and 128.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:53:21,051 INFO L168 Benchmark]: Boogie Preprocessor took 33.50 ms. Allocated memory is still 161.5 MB. Free memory was 128.7 MB in the beginning and 127.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:53:21,052 INFO L168 Benchmark]: RCFGBuilder took 343.04 ms. Allocated memory is still 161.5 MB. Free memory was 127.4 MB in the beginning and 114.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:53:21,053 INFO L168 Benchmark]: TraceAbstraction took 1741.46 ms. Allocated memory is still 161.5 MB. Free memory was 114.3 MB in the beginning and 113.4 MB in the end (delta: 954.6 kB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:53:21,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 161.5 MB. Free memory was 135.2 MB in the beginning and 135.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.99 ms. Allocated memory is still 161.5 MB. Free memory was 137.7 MB in the beginning and 128.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.50 ms. Allocated memory is still 161.5 MB. Free memory was 128.7 MB in the beginning and 127.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 343.04 ms. Allocated memory is still 161.5 MB. Free memory was 127.4 MB in the beginning and 114.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1741.46 ms. Allocated memory is still 161.5 MB. Free memory was 114.3 MB in the beginning and 113.4 MB in the end (delta: 954.6 kB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __blast_assert Derived contract for procedure __blast_assert: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for main Derived contract for procedure main: z == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 22 SDslu, 47 SDs, 0 SdLazy, 28 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 33 LocationsWithAnnotation, 45 PreInvPairs, 52 NumberOfFragments, 79 HoareAnnotationTreeSize, 45 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 33 FomulaSimplificationsInter, 275 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...