/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/loops/while_infinite_loop_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:46:57,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:46:57,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:46:57,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 21:46:57,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:46:57,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:46:57,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:46:57,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:46:57,874 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:46:57,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:46:57,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:46:57,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:46:57,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:46:57,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:46:57,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:46:57,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:46:57,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:46:57,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:46:57,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:46:57,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:46:57,878 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:46:57,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:46:57,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:46:57,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:46:57,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:46:57,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:46:57,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:46:57,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:46:58,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:46:58,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:46:58,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:46:58,349 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:46:58,353 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:46:58,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_1.c [2020-10-23 21:46:58,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f40d230/aa05675f610d4842bf96b5a5f2d86acf/FLAG370b3d045 [2020-10-23 21:46:58,973 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:46:58,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_1.c [2020-10-23 21:46:58,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f40d230/aa05675f610d4842bf96b5a5f2d86acf/FLAG370b3d045 [2020-10-23 21:46:59,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f40d230/aa05675f610d4842bf96b5a5f2d86acf [2020-10-23 21:46:59,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:46:59,348 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:46:59,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:46:59,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:46:59,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:46:59,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:46:59" (1/1) ... [2020-10-23 21:46:59,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@239ba845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:59, skipping insertion in model container [2020-10-23 21:46:59,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:46:59" (1/1) ... [2020-10-23 21:46:59,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:46:59,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:46:59,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:46:59,606 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:46:59,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:46:59,638 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:46:59,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:59 WrapperNode [2020-10-23 21:46:59,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:46:59,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:46:59,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:46:59,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:46:59,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:59" (1/1) ... [2020-10-23 21:46:59,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:59" (1/1) ... [2020-10-23 21:46:59,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:59" (1/1) ... [2020-10-23 21:46:59,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:59" (1/1) ... [2020-10-23 21:46:59,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:59" (1/1) ... [2020-10-23 21:46:59,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:59" (1/1) ... [2020-10-23 21:46:59,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:59" (1/1) ... [2020-10-23 21:46:59,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:46:59,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:46:59,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:46:59,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:46:59,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:59" (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 [2020-10-23 21:46:59,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:46:59,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:46:59,804 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:46:59,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:46:59,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:46:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:46:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:46:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:46:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:46:59,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:46:59,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:46:59,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:46:59,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:46:59,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:46:59,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:46:59,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:46:59,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:47:00,033 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:47:00,033 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 21:47:00,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:47:00 BoogieIcfgContainer [2020-10-23 21:47:00,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:47:00,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:47:00,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:47:00,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:47:00,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:46:59" (1/3) ... [2020-10-23 21:47:00,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2400eb3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:47:00, skipping insertion in model container [2020-10-23 21:47:00,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:59" (2/3) ... [2020-10-23 21:47:00,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2400eb3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:47:00, skipping insertion in model container [2020-10-23 21:47:00,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:47:00" (3/3) ... [2020-10-23 21:47:00,047 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_1.c [2020-10-23 21:47:00,067 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:47:00,074 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:47:00,103 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:47:00,167 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:47:00,168 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:47:00,168 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:47:00,168 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:47:00,168 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:47:00,168 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:47:00,168 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:47:00,169 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:47:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-23 21:47:00,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-23 21:47:00,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:47:00,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:47:00,221 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:47:00,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:47:00,229 INFO L82 PathProgramCache]: Analyzing trace with hash -212031429, now seen corresponding path program 1 times [2020-10-23 21:47:00,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:47:00,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238956057] [2020-10-23 21:47:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:47:00,328 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:47:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:47:00,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:47:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:47:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:47:00,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238956057] [2020-10-23 21:47:00,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:47:00,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:47:00,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809365509] [2020-10-23 21:47:00,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:47:00,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:47:00,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:47:00,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:47:00,560 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-10-23 21:47:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:47:00,650 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2020-10-23 21:47:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:47:00,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-23 21:47:00,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:47:00,661 INFO L225 Difference]: With dead ends: 39 [2020-10-23 21:47:00,661 INFO L226 Difference]: Without dead ends: 22 [2020-10-23 21:47:00,665 INFO L677 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 [2020-10-23 21:47:00,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-23 21:47:00,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-23 21:47:00,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-23 21:47:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-23 21:47:00,718 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2020-10-23 21:47:00,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:47:00,719 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-23 21:47:00,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:47:00,719 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-23 21:47:00,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-23 21:47:00,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:47:00,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:47:00,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:47:00,721 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:47:00,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:47:00,723 INFO L82 PathProgramCache]: Analyzing trace with hash -156620169, now seen corresponding path program 1 times [2020-10-23 21:47:00,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:47:00,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148321336] [2020-10-23 21:47:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:47:00,728 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:47:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:47:00,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:47:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:47:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:47:00,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148321336] [2020-10-23 21:47:00,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:47:00,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 21:47:00,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626765376] [2020-10-23 21:47:00,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 21:47:00,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:47:00,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 21:47:00,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 21:47:00,961 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2020-10-23 21:47:01,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:47:01,225 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-23 21:47:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:47:01,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-23 21:47:01,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:47:01,227 INFO L225 Difference]: With dead ends: 22 [2020-10-23 21:47:01,227 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 21:47:01,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 21:47:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 21:47:01,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 21:47:01,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 21:47:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 21:47:01,230 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-23 21:47:01,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:47:01,230 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 21:47:01,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 21:47:01,231 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 21:47:01,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 21:47:01,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:47:01,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 21:47:01,506 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-23 21:47:01,506 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 21:47:01,506 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-23 21:47:01,507 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-23 21:47:01,507 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-23 21:47:01,507 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-23 21:47:01,507 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 21:47:01,508 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-23 21:47:01,508 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 21:47:01,508 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-23 21:47:01,508 INFO L270 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|)) [2020-10-23 21:47:01,508 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-23 21:47:01,509 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-23 21:47:01,509 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 21:47:01,509 INFO L270 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2020-10-23 21:47:01,509 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 21:47:01,509 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 21:47:01,510 INFO L270 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2020-10-23 21:47:01,510 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 12 21) the Hoare annotation is: true [2020-10-23 21:47:01,510 INFO L270 CegarLoopResult]: At program point mainEXIT(lines 12 21) the Hoare annotation is: false [2020-10-23 21:47:01,510 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= main_~x~0 0) [2020-10-23 21:47:01,510 INFO L270 CegarLoopResult]: At program point L17-1(lines 15 18) the Hoare annotation is: (= main_~x~0 0) [2020-10-23 21:47:01,510 INFO L270 CegarLoopResult]: At program point L15-2(lines 15 18) the Hoare annotation is: false [2020-10-23 21:47:01,511 INFO L270 CegarLoopResult]: At program point mainFINAL(lines 12 21) the Hoare annotation is: false [2020-10-23 21:47:01,511 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-23 21:47:01,511 INFO L270 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 21:47:01,511 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 21:47:01,512 INFO L270 CegarLoopResult]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 21:47:01,512 INFO L270 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 21:47:01,512 INFO L270 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 21:47:01,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:47:01 BoogieIcfgContainer [2020-10-23 21:47:01,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:47:01,534 INFO L168 Benchmark]: Toolchain (without parser) took 2188.78 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 110.9 MB in the beginning and 112.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 31.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:01,535 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:47:01,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.43 ms. Allocated memory is still 153.1 MB. Free memory was 110.3 MB in the beginning and 130.0 MB in the end (delta: -19.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:01,537 INFO L168 Benchmark]: Boogie Preprocessor took 34.71 ms. Allocated memory is still 153.1 MB. Free memory was 129.6 MB in the beginning and 128.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:01,539 INFO L168 Benchmark]: RCFGBuilder took 359.92 ms. Allocated memory is still 153.1 MB. Free memory was 128.6 MB in the beginning and 125.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:01,540 INFO L168 Benchmark]: TraceAbstraction took 1493.53 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 125.0 MB in the beginning and 112.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 43.8 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:01,544 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 153.1 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.43 ms. Allocated memory is still 153.1 MB. Free memory was 110.3 MB in the beginning and 130.0 MB in the end (delta: -19.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.71 ms. Allocated memory is still 153.1 MB. Free memory was 129.6 MB in the beginning and 128.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 359.92 ms. Allocated memory is still 153.1 MB. Free memory was 128.6 MB in the beginning and 125.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1493.53 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 125.0 MB in the beginning and 112.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 43.8 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 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x == 0 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 0 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 17 SDslu, 44 SDs, 0 SdLazy, 27 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 30 LocationsWithAnnotation, 46 PreInvPairs, 50 NumberOfFragments, 89 HoareAnnotationTreeSize, 46 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 30 FomulaSimplificationsInter, 235 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...