/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:59:23,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:59:23,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:59:23,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:59:23,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:59:23,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:59:23,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:59:23,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:59:23,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:59:23,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:59:23,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:59:23,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:59:23,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:59:23,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:59:23,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:59:23,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:59:23,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:59:23,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:59:23,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:59:23,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:59:23,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:59:23,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:59:23,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:59:23,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:59:23,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:59:23,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:59:23,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:59:23,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:59:23,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:59:23,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:59:23,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:59:23,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:59:23,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:59:23,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:59:23,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:59:23,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:59:23,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:59:23,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:59:23,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:59:23,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:59:23,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:59:23,305 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:59:23,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:59:23,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:59:23,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:59:23,315 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:59:23,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:59:23,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:59:23,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:59:23,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:59:23,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:59:23,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:59:23,316 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:59:23,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:59:23,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:59:23,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:59:23,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:59:23,317 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:59:23,317 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:59:23,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:59:23,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:59:23,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:59:23,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:59:23,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:59:23,319 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:59:23,578 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:59:23,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:59:23,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:59:23,598 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:59:23,599 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:59:23,600 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_2.c [2020-07-07 13:59:23,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2edde363/3aad8240259243eabb112505610813fa/FLAGe373e9730 [2020-07-07 13:59:24,127 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:59:24,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_2.c [2020-07-07 13:59:24,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2edde363/3aad8240259243eabb112505610813fa/FLAGe373e9730 [2020-07-07 13:59:24,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2edde363/3aad8240259243eabb112505610813fa [2020-07-07 13:59:24,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:59:24,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:59:24,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:59:24,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:59:24,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:59:24,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:59:24" (1/1) ... [2020-07-07 13:59:24,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bfc0b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:24, skipping insertion in model container [2020-07-07 13:59:24,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:59:24" (1/1) ... [2020-07-07 13:59:24,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:59:24,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:59:24,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:59:24,698 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:59:24,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:59:24,723 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:59:24,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:24 WrapperNode [2020-07-07 13:59:24,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:59:24,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:59:24,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:59:24,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:59:24,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:24" (1/1) ... [2020-07-07 13:59:24,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:24" (1/1) ... [2020-07-07 13:59:24,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:24" (1/1) ... [2020-07-07 13:59:24,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:24" (1/1) ... [2020-07-07 13:59:24,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:24" (1/1) ... [2020-07-07 13:59:24,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:24" (1/1) ... [2020-07-07 13:59:24,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:24" (1/1) ... [2020-07-07 13:59:24,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:59:24,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:59:24,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:59:24,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:59:24,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:24" (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 [2020-07-07 13:59:24,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:59:24,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:59:24,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 13:59:24,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:59:24,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:59:24,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 13:59:24,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:59:24,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:59:24,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:59:25,028 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:59:25,028 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:59:25,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:59:25 BoogieIcfgContainer [2020-07-07 13:59:25,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:59:25,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:59:25,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:59:25,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:59:25,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:59:24" (1/3) ... [2020-07-07 13:59:25,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9fd365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:59:25, skipping insertion in model container [2020-07-07 13:59:25,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:24" (2/3) ... [2020-07-07 13:59:25,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9fd365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:59:25, skipping insertion in model container [2020-07-07 13:59:25,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:59:25" (3/3) ... [2020-07-07 13:59:25,041 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_2.c [2020-07-07 13:59:25,050 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:59:25,055 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:59:25,068 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:59:25,092 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:59:25,092 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:59:25,093 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:59:25,093 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:59:25,093 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:59:25,093 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:59:25,093 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:59:25,093 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:59:25,107 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-07 13:59:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-07 13:59:25,116 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:25,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:25,117 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:25,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:25,123 INFO L82 PathProgramCache]: Analyzing trace with hash -10313984, now seen corresponding path program 1 times [2020-07-07 13:59:25,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:25,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786176280] [2020-07-07 13:59:25,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:25,235 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:25,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786176280] [2020-07-07 13:59:25,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:25,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-07 13:59:25,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829057103] [2020-07-07 13:59:25,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-07 13:59:25,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:25,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-07 13:59:25,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 13:59:25,259 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-07-07 13:59:25,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:25,286 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2020-07-07 13:59:25,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-07 13:59:25,287 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-07 13:59:25,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:25,295 INFO L225 Difference]: With dead ends: 26 [2020-07-07 13:59:25,296 INFO L226 Difference]: Without dead ends: 13 [2020-07-07 13:59:25,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 13:59:25,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-07 13:59:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-07 13:59:25,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-07 13:59:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-07-07 13:59:25,337 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-07-07 13:59:25,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:25,338 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-07-07 13:59:25,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-07 13:59:25,338 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-07-07 13:59:25,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-07 13:59:25,339 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:25,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:25,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:59:25,340 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:25,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:25,340 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-07-07 13:59:25,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:25,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855059812] [2020-07-07 13:59:25,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:25,507 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:25,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855059812] [2020-07-07 13:59:25,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:25,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:59:25,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803642028] [2020-07-07 13:59:25,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:59:25,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:25,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:59:25,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:59:25,510 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-07-07 13:59:25,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:25,575 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-07-07 13:59:25,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:59:25,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-07 13:59:25,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:25,577 INFO L225 Difference]: With dead ends: 13 [2020-07-07 13:59:25,577 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 13:59:25,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:59:25,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 13:59:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 13:59:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 13:59:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 13:59:25,580 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-07 13:59:25,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:25,580 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 13:59:25,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:59:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 13:59:25,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 13:59:25,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:59:25,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 13:59:25,727 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 13:59:25,728 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-07 13:59:25,728 INFO L264 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2020-07-07 13:59:25,728 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 13:59:25,729 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 13:59:25,729 INFO L264 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2020-07-07 13:59:25,729 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 18) the Hoare annotation is: true [2020-07-07 13:59:25,729 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 9 18) the Hoare annotation is: false [2020-07-07 13:59:25,729 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= 0 main_~x~0) [2020-07-07 13:59:25,730 INFO L264 CegarLoopResult]: At program point L14-1(lines 12 15) the Hoare annotation is: (= 0 main_~x~0) [2020-07-07 13:59:25,730 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 9 18) the Hoare annotation is: false [2020-07-07 13:59:25,732 INFO L264 CegarLoopResult]: At program point L12-2(lines 12 15) the Hoare annotation is: false [2020-07-07 13:59:25,732 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-07 13:59:25,733 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 3 8) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-07 13:59:25,733 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-07 13:59:25,733 INFO L264 CegarLoopResult]: At program point L4(lines 4 6) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-07 13:59:25,733 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-07 13:59:25,734 INFO L264 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-07 13:59:25,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:59:25 BoogieIcfgContainer [2020-07-07 13:59:25,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:59:25,754 INFO L168 Benchmark]: Toolchain (without parser) took 1243.42 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 128.6 MB in the end (delta: -27.4 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:25,755 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 143.1 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:59:25,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.26 ms. Allocated memory is still 143.1 MB. Free memory was 101.0 MB in the beginning and 91.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:25,758 INFO L168 Benchmark]: Boogie Preprocessor took 104.51 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 91.6 MB in the beginning and 179.4 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:25,759 INFO L168 Benchmark]: RCFGBuilder took 202.88 ms. Allocated memory is still 200.3 MB. Free memory was 179.4 MB in the beginning and 169.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:25,760 INFO L168 Benchmark]: TraceAbstraction took 719.30 ms. Allocated memory is still 200.3 MB. Free memory was 168.5 MB in the beginning and 128.6 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:25,764 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 143.1 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 212.26 ms. Allocated memory is still 143.1 MB. Free memory was 101.0 MB in the beginning and 91.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.51 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 91.6 MB in the beginning and 179.4 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 202.88 ms. Allocated memory is still 200.3 MB. Free memory was 179.4 MB in the beginning and 169.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 719.30 ms. Allocated memory is still 200.3 MB. Free memory was 168.5 MB in the beginning and 128.6 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 12]: Loop Invariant Derived loop invariant: 0 == x - ProcedureContractResult [Line: 9]: Procedure Contract for main Derived contract for procedure main: 0 - ProcedureContractResult [Line: 3]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 0 == \old(cond) || !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 5 SDslu, 19 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 18 LocationsWithAnnotation, 30 PreInvPairs, 34 NumberOfFragments, 47 HoareAnnotationTreeSize, 30 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s 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...