/usr/bin/java -ea -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_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 17:37:39,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 17:37:39,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 17:37:39,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-08 17:37:39,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 17:37:39,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 17:37:39,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 17:37:39,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 17:37:39,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 17:37:39,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 17:37:39,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 17:37:39,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 17:37:39,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 17:37:39,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 17:37:39,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 17:37:39,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 17:37:39,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 17:37:39,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 17:37:39,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 17:37:39,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 17:37:39,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 17:37:39,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 17:37:39,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 17:37:39,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 17:37:39,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 17:37:39,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 17:37:39,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 17:37:39,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 17:37:39,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 17:37:39,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 17:37:39,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 17:37:39,979 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 17:37:39,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 17:37:39,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 17:37:39,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 17:37:39,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 17:37:39,980 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 17:37:39,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 17:37:39,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 17:37:39,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 17:37:39,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 17:37:39,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 17:37:39,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 17:37:39,982 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-08 17:37:40,257 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 17:37:40,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 17:37:40,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 17:37:40,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 17:37:40,279 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 17:37:40,279 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_1.c [2020-07-08 17:37:40,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e058448/4864d34e7f854b589fdaedd7a45e9264/FLAG342304891 [2020-07-08 17:37:40,782 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 17:37:40,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_1.c [2020-07-08 17:37:40,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e058448/4864d34e7f854b589fdaedd7a45e9264/FLAG342304891 [2020-07-08 17:37:41,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e058448/4864d34e7f854b589fdaedd7a45e9264 [2020-07-08 17:37:41,187 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 17:37:41,189 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 17:37:41,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 17:37:41,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 17:37:41,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 17:37:41,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 05:37:41" (1/1) ... [2020-07-08 17:37:41,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8cf4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:37:41, skipping insertion in model container [2020-07-08 17:37:41,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 05:37:41" (1/1) ... [2020-07-08 17:37:41,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 17:37:41,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 17:37:41,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 17:37:41,443 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 17:37:41,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 17:37:41,481 INFO L208 MainTranslator]: Completed translation [2020-07-08 17:37:41,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:37:41 WrapperNode [2020-07-08 17:37:41,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 17:37:41,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 17:37:41,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 17:37:41,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 17:37:41,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:37:41" (1/1) ... [2020-07-08 17:37:41,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:37:41" (1/1) ... [2020-07-08 17:37:41,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:37:41" (1/1) ... [2020-07-08 17:37:41,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:37:41" (1/1) ... [2020-07-08 17:37:41,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:37:41" (1/1) ... [2020-07-08 17:37:41,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:37:41" (1/1) ... [2020-07-08 17:37:41,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:37:41" (1/1) ... [2020-07-08 17:37:41,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 17:37:41,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 17:37:41,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 17:37:41,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 17:37:41,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:37:41" (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 [2020-07-08 17:37:41,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 17:37:41,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 17:37:41,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 17:37:41,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 17:37:41,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 17:37:41,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 17:37:41,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 17:37:41,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 17:37:41,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 17:37:41,824 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 17:37:41,824 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-08 17:37:41,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 05:37:41 BoogieIcfgContainer [2020-07-08 17:37:41,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 17:37:41,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 17:37:41,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 17:37:41,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 17:37:41,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 05:37:41" (1/3) ... [2020-07-08 17:37:41,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a67c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 05:37:41, skipping insertion in model container [2020-07-08 17:37:41,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:37:41" (2/3) ... [2020-07-08 17:37:41,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a67c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 05:37:41, skipping insertion in model container [2020-07-08 17:37:41,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 05:37:41" (3/3) ... [2020-07-08 17:37:41,833 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_1.c [2020-07-08 17:37:41,841 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 17:37:41,846 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 17:37:41,858 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 17:37:41,878 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 17:37:41,878 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 17:37:41,879 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-08 17:37:41,879 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 17:37:41,879 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 17:37:41,879 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 17:37:41,879 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 17:37:41,879 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 17:37:41,893 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-08 17:37:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-08 17:37:41,902 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:37:41,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:37:41,904 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:37:41,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:37:41,910 INFO L82 PathProgramCache]: Analyzing trace with hash -10313984, now seen corresponding path program 1 times [2020-07-08 17:37:41,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:37:41,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030487668] [2020-07-08 17:37:41,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:37:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:37:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:37:42,044 INFO L280 TraceCheckUtils]: 0: Hoare triple {21#true} assume true; {21#true} is VALID [2020-07-08 17:37:42,044 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {21#true} {21#true} #32#return; {21#true} is VALID [2020-07-08 17:37:42,047 INFO L263 TraceCheckUtils]: 0: Hoare triple {21#true} call ULTIMATE.init(); {21#true} is VALID [2020-07-08 17:37:42,047 INFO L280 TraceCheckUtils]: 1: Hoare triple {21#true} assume true; {21#true} is VALID [2020-07-08 17:37:42,048 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {21#true} {21#true} #32#return; {21#true} is VALID [2020-07-08 17:37:42,048 INFO L263 TraceCheckUtils]: 3: Hoare triple {21#true} call #t~ret0 := main(); {21#true} is VALID [2020-07-08 17:37:42,048 INFO L280 TraceCheckUtils]: 4: Hoare triple {21#true} ~x~0 := 0; {21#true} is VALID [2020-07-08 17:37:42,056 INFO L280 TraceCheckUtils]: 5: Hoare triple {21#true} assume !true; {22#false} is VALID [2020-07-08 17:37:42,057 INFO L263 TraceCheckUtils]: 6: Hoare triple {22#false} call __VERIFIER_assert((if 0 != ~x~0 then 1 else 0)); {22#false} is VALID [2020-07-08 17:37:42,057 INFO L280 TraceCheckUtils]: 7: Hoare triple {22#false} ~cond := #in~cond; {22#false} is VALID [2020-07-08 17:37:42,057 INFO L280 TraceCheckUtils]: 8: Hoare triple {22#false} assume 0 == ~cond; {22#false} is VALID [2020-07-08 17:37:42,058 INFO L280 TraceCheckUtils]: 9: Hoare triple {22#false} assume !false; {22#false} is VALID [2020-07-08 17:37:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:37:42,059 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:37:42,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030487668] [2020-07-08 17:37:42,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:37:42,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-08 17:37:42,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308419350] [2020-07-08 17:37:42,070 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-08 17:37:42,073 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:37:42,080 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-08 17:37:42,111 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:37:42,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-08 17:37:42,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:37:42,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-08 17:37:42,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-08 17:37:42,125 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-07-08 17:37:42,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:37:42,195 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2020-07-08 17:37:42,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-08 17:37:42,195 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-08 17:37:42,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:37:42,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-08 17:37:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 33 transitions. [2020-07-08 17:37:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-08 17:37:42,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 33 transitions. [2020-07-08 17:37:42,212 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 33 transitions. [2020-07-08 17:37:42,278 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:37:42,289 INFO L225 Difference]: With dead ends: 26 [2020-07-08 17:37:42,289 INFO L226 Difference]: Without dead ends: 13 [2020-07-08 17:37:42,292 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 [2020-07-08 17:37:42,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-08 17:37:42,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-08 17:37:42,337 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:37:42,337 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states. Second operand 13 states. [2020-07-08 17:37:42,338 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2020-07-08 17:37:42,338 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2020-07-08 17:37:42,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:37:42,342 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-07-08 17:37:42,342 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-07-08 17:37:42,343 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:37:42,343 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:37:42,343 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2020-07-08 17:37:42,343 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2020-07-08 17:37:42,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:37:42,347 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-07-08 17:37:42,347 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-07-08 17:37:42,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:37:42,348 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:37:42,348 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:37:42,348 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:37:42,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-08 17:37:42,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-07-08 17:37:42,357 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-07-08 17:37:42,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:37:42,358 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-07-08 17:37:42,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-08 17:37:42,359 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 13 states and 13 transitions. [2020-07-08 17:37:42,408 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:37:42,409 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-07-08 17:37:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-08 17:37:42,410 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:37:42,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:37:42,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 17:37:42,411 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:37:42,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:37:42,411 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-07-08 17:37:42,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:37:42,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654679081] [2020-07-08 17:37:42,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:37:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:37:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:37:42,518 INFO L280 TraceCheckUtils]: 0: Hoare triple {131#true} assume true; {131#true} is VALID [2020-07-08 17:37:42,518 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {131#true} {131#true} #32#return; {131#true} is VALID [2020-07-08 17:37:42,519 INFO L263 TraceCheckUtils]: 0: Hoare triple {131#true} call ULTIMATE.init(); {131#true} is VALID [2020-07-08 17:37:42,519 INFO L280 TraceCheckUtils]: 1: Hoare triple {131#true} assume true; {131#true} is VALID [2020-07-08 17:37:42,520 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {131#true} {131#true} #32#return; {131#true} is VALID [2020-07-08 17:37:42,520 INFO L263 TraceCheckUtils]: 3: Hoare triple {131#true} call #t~ret0 := main(); {131#true} is VALID [2020-07-08 17:37:42,521 INFO L280 TraceCheckUtils]: 4: Hoare triple {131#true} ~x~0 := 0; {135#(= 0 main_~x~0)} is VALID [2020-07-08 17:37:42,525 INFO L280 TraceCheckUtils]: 5: Hoare triple {135#(= 0 main_~x~0)} assume !false; {135#(= 0 main_~x~0)} is VALID [2020-07-08 17:37:42,527 INFO L263 TraceCheckUtils]: 6: Hoare triple {135#(= 0 main_~x~0)} call __VERIFIER_assert((if 0 == ~x~0 then 1 else 0)); {136#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 17:37:42,528 INFO L280 TraceCheckUtils]: 7: Hoare triple {136#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {137#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 17:37:42,529 INFO L280 TraceCheckUtils]: 8: Hoare triple {137#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {132#false} is VALID [2020-07-08 17:37:42,529 INFO L280 TraceCheckUtils]: 9: Hoare triple {132#false} assume !false; {132#false} is VALID [2020-07-08 17:37:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:37:42,530 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:37:42,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654679081] [2020-07-08 17:37:42,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:37:42,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-08 17:37:42,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303785910] [2020-07-08 17:37:42,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-08 17:37:42,533 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:37:42,533 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-08 17:37:42,548 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:37:42,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-08 17:37:42,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:37:42,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-08 17:37:42,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-08 17:37:42,550 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-07-08 17:37:42,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:37:42,631 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-07-08 17:37:42,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-08 17:37:42,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-08 17:37:42,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:37:42,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 17:37:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2020-07-08 17:37:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 17:37:42,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2020-07-08 17:37:42,637 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 13 transitions. [2020-07-08 17:37:42,658 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:37:42,658 INFO L225 Difference]: With dead ends: 13 [2020-07-08 17:37:42,659 INFO L226 Difference]: Without dead ends: 0 [2020-07-08 17:37:42,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-08 17:37:42,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-08 17:37:42,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-08 17:37:42,661 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:37:42,661 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-08 17:37:42,662 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 17:37:42,662 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 17:37:42,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:37:42,663 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 17:37:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 17:37:42,663 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:37:42,663 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:37:42,664 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 17:37:42,664 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 17:37:42,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:37:42,664 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 17:37:42,665 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 17:37:42,665 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:37:42,665 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:37:42,665 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:37:42,666 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:37:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-08 17:37:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-08 17:37:42,666 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-08 17:37:42,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:37:42,667 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-08 17:37:42,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-08 17:37:42,667 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-08 17:37:42,667 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:37:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 17:37:42,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:37:42,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 17:37:42,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-08 17:37:42,825 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-08 17:37:42,825 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-08 17:37:42,826 INFO L264 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2020-07-08 17:37:42,826 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-08 17:37:42,826 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-08 17:37:42,826 INFO L264 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2020-07-08 17:37:42,826 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 19) the Hoare annotation is: true [2020-07-08 17:37:42,826 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 10 19) the Hoare annotation is: false [2020-07-08 17:37:42,827 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 17:37:42,827 INFO L264 CegarLoopResult]: At program point L15-1(lines 13 16) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 17:37:42,827 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 10 19) the Hoare annotation is: false [2020-07-08 17:37:42,827 INFO L264 CegarLoopResult]: At program point L13-2(lines 13 16) the Hoare annotation is: false [2020-07-08 17:37:42,827 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-08 17:37:42,828 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))) [2020-07-08 17:37:42,828 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-08 17:37:42,828 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))) [2020-07-08 17:37:42,828 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-08 17:37:42,828 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))) [2020-07-08 17:37:42,839 INFO L163 areAnnotationChecker]: CFG has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-08 17:37:42,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 05:37:42 BoogieIcfgContainer [2020-07-08 17:37:42,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 17:37:42,856 INFO L168 Benchmark]: Toolchain (without parser) took 1666.57 ms. Allocated memory was 136.3 MB in the beginning and 229.1 MB in the end (delta: 92.8 MB). Free memory was 102.1 MB in the beginning and 197.2 MB in the end (delta: -95.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-08 17:37:42,857 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 136.3 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-08 17:37:42,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.20 ms. Allocated memory is still 136.3 MB. Free memory was 101.9 MB in the beginning and 92.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-08 17:37:42,859 INFO L168 Benchmark]: Boogie Preprocessor took 109.13 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 92.5 MB in the beginning and 179.5 MB in the end (delta: -87.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-07-08 17:37:42,860 INFO L168 Benchmark]: RCFGBuilder took 234.84 ms. Allocated memory is still 200.3 MB. Free memory was 179.5 MB in the beginning and 167.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-07-08 17:37:42,861 INFO L168 Benchmark]: TraceAbstraction took 1024.83 ms. Allocated memory was 200.3 MB in the beginning and 229.1 MB in the end (delta: 28.8 MB). Free memory was 166.3 MB in the beginning and 197.2 MB in the end (delta: -30.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-08 17:37:42,865 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 136.3 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 292.20 ms. Allocated memory is still 136.3 MB. Free memory was 101.9 MB in the beginning and 92.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.13 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 92.5 MB in the beginning and 179.5 MB in the end (delta: -87.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 234.84 ms. Allocated memory is still 200.3 MB. Free memory was 179.5 MB in the beginning and 167.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1024.83 ms. Allocated memory was 200.3 MB in the beginning and 229.1 MB in the end (delta: 28.8 MB). Free memory was 166.3 MB in the beginning and 197.2 MB in the end (delta: -30.9 MB). There was no memory consumed. 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: 13]: Loop Invariant Derived loop invariant: 0 == x - ProcedureContractResult [Line: 10]: 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: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, 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, 0.0s 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...