/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_while_int.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:53:33,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:53:33,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:53:33,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:53:33,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:53:33,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:53:33,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:53:33,354 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 00:53:33,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:53:33,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:53:33,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:53:33,383 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:53:33,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:53:33,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:53:33,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:53:33,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:53:33,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:53:33,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:53:33,385 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:53:33,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:53:33,385 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:53:33,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:53:33,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:53:33,386 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:53:33,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:53:33,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:53:33,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:53:33,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:53:33,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:53:33,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:53:33,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:53:33,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:53:33,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:53:33,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:53:33,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:53:33,798 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:53:33,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.i [2020-11-07 00:53:33,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d7a9cd1/5799805c764f43fa8bbbc77fead21dc9/FLAGf53e9506d [2020-11-07 00:53:34,548 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:53:34,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.i [2020-11-07 00:53:34,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d7a9cd1/5799805c764f43fa8bbbc77fead21dc9/FLAGf53e9506d [2020-11-07 00:53:34,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d7a9cd1/5799805c764f43fa8bbbc77fead21dc9 [2020-11-07 00:53:34,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:53:34,954 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:53:34,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:53:34,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:53:34,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:53:34,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:34" (1/1) ... [2020-11-07 00:53:34,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b1cebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:34, skipping insertion in model container [2020-11-07 00:53:34,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:34" (1/1) ... [2020-11-07 00:53:34,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:53:34,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:53:35,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:53:35,249 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:53:35,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:53:35,289 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:53:35,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:35 WrapperNode [2020-11-07 00:53:35,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:53:35,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:53:35,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:53:35,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:53:35,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:35" (1/1) ... [2020-11-07 00:53:35,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:35" (1/1) ... [2020-11-07 00:53:35,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:35" (1/1) ... [2020-11-07 00:53:35,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:35" (1/1) ... [2020-11-07 00:53:35,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:35" (1/1) ... [2020-11-07 00:53:35,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:35" (1/1) ... [2020-11-07 00:53:35,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:35" (1/1) ... [2020-11-07 00:53:35,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:53:35,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:53:35,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:53:35,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:53:35,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:35" (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 00:53:35,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:53:35,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:53:35,433 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:53:35,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-11-07 00:53:35,434 INFO L138 BoogieDeclarations]: Found implementation of procedure check_error [2020-11-07 00:53:35,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:53:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:53:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:53:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:53:35,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:53:35,435 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-11-07 00:53:35,435 INFO L130 BoogieDeclarations]: Found specification of procedure check_error [2020-11-07 00:53:35,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:53:35,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:53:35,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:53:35,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:53:35,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:53:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:53:35,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:53:35,681 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:53:35,682 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 00:53:35,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:35 BoogieIcfgContainer [2020-11-07 00:53:35,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:53:35,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:53:35,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:53:35,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:53:35,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:34" (1/3) ... [2020-11-07 00:53:35,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6c0783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:35, skipping insertion in model container [2020-11-07 00:53:35,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:35" (2/3) ... [2020-11-07 00:53:35,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6c0783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:35, skipping insertion in model container [2020-11-07 00:53:35,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:35" (3/3) ... [2020-11-07 00:53:35,696 INFO L111 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2020-11-07 00:53:35,717 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:53:35,721 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:53:35,747 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:53:35,815 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:53:35,815 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:53:35,815 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:53:35,815 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:53:35,816 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:53:35,816 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:53:35,816 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:53:35,816 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:53:35,848 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-11-07 00:53:35,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-07 00:53:35,857 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:53:35,858 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, 1, 1] [2020-11-07 00:53:35,858 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:53:35,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:53:35,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1405725244, now seen corresponding path program 1 times [2020-11-07 00:53:35,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:53:35,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538785071] [2020-11-07 00:53:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:53:35,959 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:53:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:36,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:53:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:36,318 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 00:53:36,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538785071] [2020-11-07 00:53:36,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:53:36,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 00:53:36,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750471249] [2020-11-07 00:53:36,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 00:53:36,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:53:36,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 00:53:36,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-07 00:53:36,347 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 8 states. [2020-11-07 00:53:36,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:53:36,827 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2020-11-07 00:53:36,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 00:53:36,829 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-11-07 00:53:36,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:53:36,838 INFO L225 Difference]: With dead ends: 66 [2020-11-07 00:53:36,838 INFO L226 Difference]: Without dead ends: 38 [2020-11-07 00:53:36,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-11-07 00:53:36,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-07 00:53:36,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-11-07 00:53:36,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-07 00:53:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-11-07 00:53:36,892 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 23 [2020-11-07 00:53:36,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:53:36,893 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-11-07 00:53:36,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 00:53:36,894 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-11-07 00:53:36,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-07 00:53:36,895 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:53:36,895 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:53:36,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:53:36,896 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:53:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:53:36,897 INFO L82 PathProgramCache]: Analyzing trace with hash -940867191, now seen corresponding path program 1 times [2020-11-07 00:53:36,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:53:36,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534793736] [2020-11-07 00:53:36,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:53:37,128 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-11-07 00:53:39,297 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 00:53:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:39,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:53:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:39,471 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 00:53:39,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534793736] [2020-11-07 00:53:39,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:53:39,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-11-07 00:53:39,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139504047] [2020-11-07 00:53:39,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 00:53:39,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:53:39,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 00:53:39,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-11-07 00:53:39,663 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 16 states. [2020-11-07 00:53:40,501 WARN L194 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-11-07 00:53:40,636 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-11-07 00:53:40,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:53:40,700 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-11-07 00:53:40,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 00:53:40,701 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2020-11-07 00:53:40,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:53:40,702 INFO L225 Difference]: With dead ends: 35 [2020-11-07 00:53:40,710 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 00:53:40,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2020-11-07 00:53:40,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 00:53:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 00:53:40,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 00:53:40,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 00:53:40,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-11-07 00:53:40,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:53:40,716 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 00:53:40,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 00:53:40,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 00:53:40,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 00:53:40,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:53:40,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 00:53:41,055 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 27 [2020-11-07 00:53:41,210 WARN L194 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-11-07 00:53:41,356 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2020-11-07 00:53:41,525 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2020-11-07 00:53:41,682 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-11-07 00:53:41,796 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 27 [2020-11-07 00:53:41,952 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 29 [2020-11-07 00:53:42,112 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 00:53:42,112 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 00:53:42,112 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 00:53:42,112 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 00:53:42,113 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 00:53:42,113 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 00:53:42,113 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 00:53:42,113 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 00:53:42,113 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 00:53:42,113 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-11-07 00:53:42,114 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 00:53:42,114 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 00:53:42,114 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 00:53:42,114 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 00:53:42,114 INFO L262 CegarLoopResult]: At program point L20-3(lines 19 21) the Hoare annotation is: (or (= |check_error_#in~b| 0) (and (not (<= 4 main_~i~0)) (not (<= main_~i~0 2))) (= |check_error_#in~b| check_error_~b) (forall ((v_main_~i~0_15 Int)) (or (not (< v_main_~i~0_15 6)) (not (= |check_error_#in~b| (ite (not (= v_main_~i~0_15 3)) 1 0)))))) [2020-11-07 00:53:42,115 INFO L269 CegarLoopResult]: At program point check_errorENTRY(lines 19 21) the Hoare annotation is: true [2020-11-07 00:53:42,115 INFO L262 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (or (= |check_error_#in~b| 0) (and (not (<= 4 main_~i~0)) (not (<= main_~i~0 2))) (= |check_error_#in~b| check_error_~b) (forall ((v_main_~i~0_15 Int)) (or (not (< v_main_~i~0_15 6)) (not (= |check_error_#in~b| (ite (not (= v_main_~i~0_15 3)) 1 0)))))) [2020-11-07 00:53:42,115 INFO L262 CegarLoopResult]: At program point check_errorEXIT(lines 19 21) the Hoare annotation is: (or (= |check_error_#in~b| 0) (and (not (<= 4 main_~i~0)) (not (<= main_~i~0 2))) (= |check_error_#in~b| check_error_~b) (forall ((v_main_~i~0_15 Int)) (or (not (< v_main_~i~0_15 6)) (not (= |check_error_#in~b| (ite (not (= v_main_~i~0_15 3)) 1 0)))))) [2020-11-07 00:53:42,115 INFO L262 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (or (= |check_error_#in~b| 0) (and (not (<= 4 main_~i~0)) (not (<= main_~i~0 2))) (forall ((v_main_~i~0_15 Int)) (or (not (< v_main_~i~0_15 6)) (not (= |check_error_#in~b| (ite (not (= v_main_~i~0_15 3)) 1 0)))))) [2020-11-07 00:53:42,115 INFO L269 CegarLoopResult]: At program point __blast_assertEXIT(lines 6 9) the Hoare annotation is: true [2020-11-07 00:53:42,116 INFO L269 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-11-07 00:53:42,116 INFO L269 CegarLoopResult]: At program point __blast_assertFINAL(lines 6 9) the Hoare annotation is: true [2020-11-07 00:53:42,116 INFO L269 CegarLoopResult]: At program point __blast_assertENTRY(lines 6 9) the Hoare annotation is: true [2020-11-07 00:53:42,116 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 00:53:42,116 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 00:53:42,116 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 00:53:42,116 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 00:53:42,117 INFO L262 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 (or (<= |main_#t~post7| 1) (<= 3 |main_#t~post7|)))) (or (and (< main_~i~0 6) (<= 4 main_~i~0) (exists ((v_main_~i~0_15 Int)) (and (< v_main_~i~0_15 6) (= |check_error_#in~b| (ite (not (= v_main_~i~0_15 3)) 1 0)))) .cse0 (not (= check_error_~b 0)) (= |check_error_#in~b| check_error_~b)) (and .cse0 (<= main_~i~0 1)))) [2020-11-07 00:53:42,117 INFO L262 CegarLoopResult]: At program point L31-1(lines 26 33) the Hoare annotation is: (or (and (or (<= 4 main_~i~0) (<= main_~i~0 2)) (or (<= 3 main_~i~0) (<= main_~i~0 1)) (< main_~i~0 6) (exists ((v_main_~i~0_15 Int)) (and (< v_main_~i~0_15 6) (= |check_error_#in~b| (ite (not (= v_main_~i~0_15 3)) 1 0)))) (or (<= |main_#t~post7| 1) (<= 3 |main_#t~post7|)) (not (= check_error_~b 0)) (= |check_error_#in~b| check_error_~b)) (= main_~i~0 0)) [2020-11-07 00:53:42,117 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2020-11-07 00:53:42,117 INFO L262 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (or (= main_~i~0 0) (and (or (<= 4 main_~i~0) (<= main_~i~0 2)) (or (<= 3 main_~i~0) (<= main_~i~0 1)) (< main_~i~0 5) (exists ((v_main_~i~0_15 Int)) (and (< v_main_~i~0_15 6) (= |check_error_#in~b| (ite (not (= v_main_~i~0_15 3)) 1 0)))) (or (<= |main_#t~post7| 1) (<= 3 |main_#t~post7|)) (not (= check_error_~b 0)) (= |check_error_#in~b| check_error_~b))) [2020-11-07 00:53:42,118 INFO L262 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: (let ((.cse0 (= |main_#t~post7| main_~i~0))) (or (and (or (<= 4 main_~i~0) (<= main_~i~0 2)) (< main_~i~0 5) .cse0 (exists ((v_main_~i~0_15 Int)) (and (< v_main_~i~0_15 6) (= |check_error_#in~b| (ite (not (= v_main_~i~0_15 3)) 1 0)))) (or (<= |main_#t~post7| 1) (<= 3 |main_#t~post7|)) (not (= check_error_~b 0)) (= |check_error_#in~b| check_error_~b)) (and (= main_~i~0 0) .cse0))) [2020-11-07 00:53:42,118 INFO L262 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (let ((.cse0 (= (+ |main_#t~post7| 1) main_~i~0))) (or (and (= |main_#t~post7| 0) .cse0) (and (or (<= 3 main_~i~0) (<= main_~i~0 1)) (< |main_#t~post7| 5) .cse0 (exists ((v_main_~i~0_15 Int)) (and (< v_main_~i~0_15 6) (= |check_error_#in~b| (ite (not (= v_main_~i~0_15 3)) 1 0)))) (or (<= |main_#t~post7| 1) (<= 3 |main_#t~post7|)) (not (= check_error_~b 0)) (= |check_error_#in~b| check_error_~b)))) [2020-11-07 00:53:42,118 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 24 35) the Hoare annotation is: true [2020-11-07 00:53:42,118 INFO L269 CegarLoopResult]: At program point L26-2(lines 26 33) the Hoare annotation is: true [2020-11-07 00:53:42,118 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 24 35) the Hoare annotation is: true [2020-11-07 00:53:42,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2020-11-07 00:53:42,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2020-11-07 00:53:42,137 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2020-11-07 00:53:42,137 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2020-11-07 00:53:42,140 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2020-11-07 00:53:42,140 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2020-11-07 00:53:42,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:53:42 BoogieIcfgContainer [2020-11-07 00:53:42,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:53:42,144 INFO L168 Benchmark]: Toolchain (without parser) took 7195.75 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 102.7 MB in the beginning and 50.6 MB in the end (delta: 52.2 MB). Peak memory consumption was 80.8 MB. Max. memory is 8.0 GB. [2020-11-07 00:53:42,145 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 87.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:53:42,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.03 ms. Allocated memory is still 125.8 MB. Free memory was 102.1 MB in the beginning and 92.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:53:42,147 INFO L168 Benchmark]: Boogie Preprocessor took 51.00 ms. Allocated memory is still 125.8 MB. Free memory was 92.9 MB in the beginning and 91.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:53:42,149 INFO L168 Benchmark]: RCFGBuilder took 339.21 ms. Allocated memory is still 125.8 MB. Free memory was 91.6 MB in the beginning and 78.9 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:53:42,150 INFO L168 Benchmark]: TraceAbstraction took 6456.42 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 78.5 MB in the beginning and 50.6 MB in the end (delta: 27.9 MB). Peak memory consumption was 56.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:53:42,155 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 87.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 330.03 ms. Allocated memory is still 125.8 MB. Free memory was 102.1 MB in the beginning and 92.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.00 ms. Allocated memory is still 125.8 MB. Free memory was 92.9 MB in the beginning and 91.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 339.21 ms. Allocated memory is still 125.8 MB. Free memory was 91.6 MB in the beginning and 78.9 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6456.42 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 78.5 MB in the beginning and 50.6 MB in the end (delta: 27.9 MB). Peak memory consumption was 56.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] * 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: 26]: Loop Invariant [2020-11-07 00:53:42,164 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2020-11-07 00:53:42,165 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2020-11-07 00:53:42,167 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2020-11-07 00:53:42,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] Derived loop invariant: (((((((4 <= i || i <= 2) && (3 <= i || i <= 1)) && i < 6) && (\exists v_main_~i~0_15 : int :: v_main_~i~0_15 < 6 && \old(b) == (if !(v_main_~i~0_15 == 3) then 1 else 0))) && (aux-i++-aux <= 1 || 3 <= aux-i++-aux)) && !(b == 0)) && \old(b) == b) || i == 0 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 19]: Procedure Contract for check_error [2020-11-07 00:53:42,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2020-11-07 00:53:42,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2020-11-07 00:53:42,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2020-11-07 00:53:42,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] Derived contract for procedure check_error: ((\old(b) == 0 || (!(4 <= i) && !(i <= 2))) || \old(b) == b) || (forall v_main_~i~0_15 : int :: !(v_main_~i~0_15 < 6) || !(\old(b) == (if !(v_main_~i~0_15 == 3) then 1 else 0))) - ProcedureContractResult [Line: 6]: Procedure Contract for __blast_assert Derived contract for procedure __blast_assert: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 74 SDslu, 205 SDs, 0 SdLazy, 164 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 54 PreInvPairs, 73 NumberOfFragments, 433 HoareAnnotationTreeSize, 54 FomulaSimplifications, 239 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 36 FomulaSimplificationsInter, 1041 FormulaSimplificationTreeSizeReductionInter, 1.1s 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...