/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/ldv-regression/test13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:21:50,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:21:50,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:21:50,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-18 00:21:50,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:21:50,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:21:50,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:21:50,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:21:50,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:21:50,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:21:50,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:21:50,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:21:50,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:21:50,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:21:50,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:21:50,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:21:50,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:21:50,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:21:50,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:21:50,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:21:50,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 00:21:50,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:21:50,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:21:50,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:21:50,277 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:21:50,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:21:50,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:21:50,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:21:50,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:21:50,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:21:50,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:21:50,278 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:21:50,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:21:50,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:21:50,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:21:50,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:21:50,281 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:21:50,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:21:50,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:21:50,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:21:50,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:21:50,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:21:50,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:21:50,282 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:21:50,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:21:50,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:21:50,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:21:50,602 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:21:50,602 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:21:50,603 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test13.c [2020-07-18 00:21:50,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7da8234f/b98d081884c6439e8bef09938bbd3961/FLAGaf3393242 [2020-07-18 00:21:51,118 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:21:51,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test13.c [2020-07-18 00:21:51,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7da8234f/b98d081884c6439e8bef09938bbd3961/FLAGaf3393242 [2020-07-18 00:21:51,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7da8234f/b98d081884c6439e8bef09938bbd3961 [2020-07-18 00:21:51,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:21:51,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:21:51,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:21:51,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:21:51,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:21:51,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:21:51" (1/1) ... [2020-07-18 00:21:51,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d4feeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:51, skipping insertion in model container [2020-07-18 00:21:51,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:21:51" (1/1) ... [2020-07-18 00:21:51,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:21:51,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:21:51,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:21:51,731 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:21:51,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:21:51,771 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:21:51,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:51 WrapperNode [2020-07-18 00:21:51,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:21:51,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:21:51,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:21:51,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:21:51,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:51" (1/1) ... [2020-07-18 00:21:51,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:51" (1/1) ... [2020-07-18 00:21:51,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:51" (1/1) ... [2020-07-18 00:21:51,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:51" (1/1) ... [2020-07-18 00:21:51,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:51" (1/1) ... [2020-07-18 00:21:51,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:51" (1/1) ... [2020-07-18 00:21:51,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:51" (1/1) ... [2020-07-18 00:21:51,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:21:51,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:21:51,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:21:51,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:21:51,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:51" (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 [2020-07-18 00:21:51,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:21:51,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:21:51,976 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-18 00:21:51,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:21:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:21:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-18 00:21:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:21:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:21:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 00:21:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-18 00:21:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:21:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 00:21:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 00:21:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 00:21:52,312 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:21:52,313 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 00:21:52,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:21:52 BoogieIcfgContainer [2020-07-18 00:21:52,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:21:52,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:21:52,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:21:52,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:21:52,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:21:51" (1/3) ... [2020-07-18 00:21:52,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6550bfd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:21:52, skipping insertion in model container [2020-07-18 00:21:52,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:51" (2/3) ... [2020-07-18 00:21:52,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6550bfd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:21:52, skipping insertion in model container [2020-07-18 00:21:52,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:21:52" (3/3) ... [2020-07-18 00:21:52,325 INFO L109 eAbstractionObserver]: Analyzing ICFG test13.c [2020-07-18 00:21:52,336 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:21:52,344 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:21:52,359 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:21:52,381 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:21:52,382 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:21:52,382 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:21:52,382 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:21:52,382 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:21:52,383 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:21:52,383 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:21:52,383 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:21:52,398 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-18 00:21:52,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-18 00:21:52,407 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:21:52,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:21:52,408 INFO L427 AbstractCegarLoop]: === Iteration 1 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:21:52,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:21:52,414 INFO L82 PathProgramCache]: Analyzing trace with hash 437013475, now seen corresponding path program 1 times [2020-07-18 00:21:52,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:21:52,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974037829] [2020-07-18 00:21:52,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:21:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:21:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:21:52,856 INFO L280 TraceCheckUtils]: 0: Hoare triple {46#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= ~pa~0.base |old(~pa~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|) (= ~pb~0.base |old(~pb~0.base)|))} #NULL.base, #NULL.offset := 0, 0; {29#true} is VALID [2020-07-18 00:21:52,857 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#true} #valid := #valid[0 := 0]; {29#true} is VALID [2020-07-18 00:21:52,857 INFO L280 TraceCheckUtils]: 2: Hoare triple {29#true} assume 0 < #StackHeapBarrier; {29#true} is VALID [2020-07-18 00:21:52,858 INFO L280 TraceCheckUtils]: 3: Hoare triple {29#true} SUMMARY for call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4); srcloc: L14 {29#true} is VALID [2020-07-18 00:21:52,859 INFO L280 TraceCheckUtils]: 4: Hoare triple {29#true} SUMMARY for call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4); srcloc: L14-1 {29#true} is VALID [2020-07-18 00:21:52,859 INFO L280 TraceCheckUtils]: 5: Hoare triple {29#true} SUMMARY for call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4); srcloc: L14-2 {29#true} is VALID [2020-07-18 00:21:52,859 INFO L280 TraceCheckUtils]: 6: Hoare triple {29#true} SUMMARY for call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4); srcloc: L14-3 {29#true} is VALID [2020-07-18 00:21:52,861 INFO L280 TraceCheckUtils]: 7: Hoare triple {29#true} ~pa~0.base, ~pa~0.offset := ~#a~0.base, ~#a~0.offset; {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} is VALID [2020-07-18 00:21:52,863 INFO L280 TraceCheckUtils]: 8: Hoare triple {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} ~pb~0.base, ~pb~0.offset := ~#b~0.base, ~#b~0.offset; {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} is VALID [2020-07-18 00:21:52,864 INFO L280 TraceCheckUtils]: 9: Hoare triple {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} assume true; {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} is VALID [2020-07-18 00:21:52,866 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} {29#true} #27#return; {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} is VALID [2020-07-18 00:21:52,873 INFO L263 TraceCheckUtils]: 0: Hoare triple {29#true} call ULTIMATE.init(); {46#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= ~pa~0.base |old(~pa~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|) (= ~pb~0.base |old(~pb~0.base)|))} is VALID [2020-07-18 00:21:52,873 INFO L280 TraceCheckUtils]: 1: Hoare triple {46#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= ~pa~0.base |old(~pa~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|) (= ~pb~0.base |old(~pb~0.base)|))} #NULL.base, #NULL.offset := 0, 0; {29#true} is VALID [2020-07-18 00:21:52,874 INFO L280 TraceCheckUtils]: 2: Hoare triple {29#true} #valid := #valid[0 := 0]; {29#true} is VALID [2020-07-18 00:21:52,874 INFO L280 TraceCheckUtils]: 3: Hoare triple {29#true} assume 0 < #StackHeapBarrier; {29#true} is VALID [2020-07-18 00:21:52,875 INFO L280 TraceCheckUtils]: 4: Hoare triple {29#true} SUMMARY for call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4); srcloc: L14 {29#true} is VALID [2020-07-18 00:21:52,875 INFO L280 TraceCheckUtils]: 5: Hoare triple {29#true} SUMMARY for call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4); srcloc: L14-1 {29#true} is VALID [2020-07-18 00:21:52,876 INFO L280 TraceCheckUtils]: 6: Hoare triple {29#true} SUMMARY for call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4); srcloc: L14-2 {29#true} is VALID [2020-07-18 00:21:52,877 INFO L280 TraceCheckUtils]: 7: Hoare triple {29#true} SUMMARY for call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4); srcloc: L14-3 {29#true} is VALID [2020-07-18 00:21:52,878 INFO L280 TraceCheckUtils]: 8: Hoare triple {29#true} ~pa~0.base, ~pa~0.offset := ~#a~0.base, ~#a~0.offset; {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} is VALID [2020-07-18 00:21:52,879 INFO L280 TraceCheckUtils]: 9: Hoare triple {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} ~pb~0.base, ~pb~0.offset := ~#b~0.base, ~#b~0.offset; {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} is VALID [2020-07-18 00:21:52,881 INFO L280 TraceCheckUtils]: 10: Hoare triple {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} assume true; {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} is VALID [2020-07-18 00:21:52,882 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} {29#true} #27#return; {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} is VALID [2020-07-18 00:21:52,884 INFO L263 TraceCheckUtils]: 12: Hoare triple {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} call #t~ret0 := main(); {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} is VALID [2020-07-18 00:21:52,886 INFO L263 TraceCheckUtils]: 13: Hoare triple {42#(and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))} call check(~pa~0.base, ~pa~0.offset, ~#a~0.base, ~#a~0.offset); {43#(and (= |check_#in~b.offset| |check_#in~a.offset|) (= |check_#in~a.base| |check_#in~b.base|))} is VALID [2020-07-18 00:21:52,887 INFO L280 TraceCheckUtils]: 14: Hoare triple {43#(and (= |check_#in~b.offset| |check_#in~a.offset|) (= |check_#in~a.base| |check_#in~b.base|))} ~a.base, ~a.offset := #in~a.base, #in~a.offset; {44#(and (= check_~a.base |check_#in~b.base|) (= |check_#in~b.offset| check_~a.offset))} is VALID [2020-07-18 00:21:52,889 INFO L280 TraceCheckUtils]: 15: Hoare triple {44#(and (= check_~a.base |check_#in~b.base|) (= |check_#in~b.offset| check_~a.offset))} ~b.base, ~b.offset := #in~b.base, #in~b.offset; {45#(and (= check_~a.base check_~b.base) (= check_~a.offset check_~b.offset))} is VALID [2020-07-18 00:21:52,890 INFO L280 TraceCheckUtils]: 16: Hoare triple {45#(and (= check_~a.base check_~b.base) (= check_~a.offset check_~b.offset))} assume ~a.base != ~b.base || ~a.offset != ~b.offset; {30#false} is VALID [2020-07-18 00:21:52,890 INFO L280 TraceCheckUtils]: 17: Hoare triple {30#false} assume !false; {30#false} is VALID [2020-07-18 00:21:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:21:52,902 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:21:52,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974037829] [2020-07-18 00:21:52,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:21:52,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-18 00:21:52,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649211062] [2020-07-18 00:21:52,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-07-18 00:21:52,917 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:21:52,922 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-18 00:21:52,957 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:21:52,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-18 00:21:52,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:21:52,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-18 00:21:52,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-18 00:21:52,971 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2020-07-18 00:21:53,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:21:53,693 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2020-07-18 00:21:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-18 00:21:53,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-07-18 00:21:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:21:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 00:21:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 32 transitions. [2020-07-18 00:21:53,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 00:21:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 32 transitions. [2020-07-18 00:21:53,714 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 32 transitions. [2020-07-18 00:21:53,770 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:21:53,778 INFO L225 Difference]: With dead ends: 33 [2020-07-18 00:21:53,778 INFO L226 Difference]: Without dead ends: 0 [2020-07-18 00:21:53,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-07-18 00:21:53,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-18 00:21:53,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-18 00:21:53,808 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:21:53,809 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-18 00:21:53,810 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 00:21:53,810 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 00:21:53,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:21:53,811 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 00:21:53,811 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 00:21:53,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:21:53,812 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:21:53,812 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 00:21:53,812 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 00:21:53,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:21:53,813 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 00:21:53,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 00:21:53,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:21:53,813 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:21:53,814 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:21:53,814 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:21:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-18 00:21:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-18 00:21:53,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-18 00:21:53,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:21:53,817 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-18 00:21:53,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-18 00:21:53,817 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-18 00:21:53,817 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:21:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 00:21:53,818 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:21:53,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:21:53,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-18 00:21:54,345 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-18 00:21:54,346 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2020-07-18 00:21:54,346 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-07-18 00:21:54,346 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-18 00:21:54,347 INFO L264 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2020-07-18 00:21:54,347 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-07-18 00:21:54,347 INFO L271 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: true [2020-07-18 00:21:54,347 INFO L271 CegarLoopResult]: At program point L14-3(line 14) the Hoare annotation is: true [2020-07-18 00:21:54,347 INFO L271 CegarLoopResult]: At program point L14-4(line 14) the Hoare annotation is: true [2020-07-18 00:21:54,348 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= ~pa~0.base |old(~pa~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|) (= ~pb~0.base |old(~pb~0.base)|)) [2020-07-18 00:21:54,348 INFO L264 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2020-07-18 00:21:54,348 INFO L264 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2020-07-18 00:21:54,349 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2020-07-18 00:21:54,349 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-18 00:21:54,349 INFO L264 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2020-07-18 00:21:54,349 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 17 20) the Hoare annotation is: true [2020-07-18 00:21:54,349 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 17 20) the Hoare annotation is: true [2020-07-18 00:21:54,350 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 17 20) the Hoare annotation is: true [2020-07-18 00:21:54,350 INFO L271 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-07-18 00:21:54,350 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 4 12) the Hoare annotation is: true [2020-07-18 00:21:54,350 INFO L264 CegarLoopResult]: At program point checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (or (not (= |~#a~0.base| ~pa~0.base)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= |~#a~0.offset| ~pa~0.offset)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2020-07-18 00:21:54,350 INFO L264 CegarLoopResult]: At program point checkFINAL(lines 4 12) the Hoare annotation is: (or (not (= ~pa~0.base |~#a~0.base|)) (not (= ~pa~0.offset |~#a~0.offset|)) (and (= check_~a.base check_~b.base) (= check_~a.base |check_#in~b.base|) (= |check_#in~b.offset| check_~a.offset) (= check_~a.offset check_~b.offset)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2020-07-18 00:21:54,351 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: (or (not (= |~#a~0.base| ~pa~0.base)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= |~#a~0.offset| ~pa~0.offset)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2020-07-18 00:21:54,351 INFO L264 CegarLoopResult]: At program point L5(lines 5 7) the Hoare annotation is: (or (not (= ~pa~0.base |~#a~0.base|)) (not (= ~pa~0.offset |~#a~0.offset|)) (and (= check_~a.base check_~b.base) (= check_~a.base |check_#in~b.base|) (= |check_#in~b.offset| check_~a.offset) (= check_~a.offset check_~b.offset)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2020-07-18 00:21:54,351 INFO L264 CegarLoopResult]: At program point L4(lines 4 12) the Hoare annotation is: (or (not (= ~pa~0.base |~#a~0.base|)) (and (= check_~a.base |check_#in~b.base|) (= |check_#in~b.offset| check_~a.offset)) (not (= ~pa~0.offset |~#a~0.offset|)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2020-07-18 00:21:54,351 INFO L264 CegarLoopResult]: At program point checkEXIT(lines 4 12) the Hoare annotation is: (or (not (= ~pa~0.base |~#a~0.base|)) (not (= ~pa~0.offset |~#a~0.offset|)) (and (= check_~a.base check_~b.base) (= check_~a.base |check_#in~b.base|) (= |check_#in~b.offset| check_~a.offset) (= check_~a.offset check_~b.offset)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2020-07-18 00:21:54,365 INFO L163 areAnnotationChecker]: CFG has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 00:21:54,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 12:21:54 BoogieIcfgContainer [2020-07-18 00:21:54,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 00:21:54,389 INFO L168 Benchmark]: Toolchain (without parser) took 2854.28 ms. Allocated memory was 145.2 MB in the beginning and 245.4 MB in the end (delta: 100.1 MB). Free memory was 103.6 MB in the beginning and 146.5 MB in the end (delta: -42.9 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. [2020-07-18 00:21:54,390 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 00:21:54,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.58 ms. Allocated memory is still 145.2 MB. Free memory was 103.2 MB in the beginning and 93.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-18 00:21:54,393 INFO L168 Benchmark]: Boogie Preprocessor took 141.11 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 93.3 MB in the beginning and 180.5 MB in the end (delta: -87.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:21:54,394 INFO L168 Benchmark]: RCFGBuilder took 402.20 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 162.6 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-07-18 00:21:54,395 INFO L168 Benchmark]: TraceAbstraction took 2067.60 ms. Allocated memory was 202.4 MB in the beginning and 245.4 MB in the end (delta: 43.0 MB). Free memory was 162.0 MB in the beginning and 146.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:21:54,399 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 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 236.58 ms. Allocated memory is still 145.2 MB. Free memory was 103.2 MB in the beginning and 93.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.11 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 93.3 MB in the beginning and 180.5 MB in the end (delta: -87.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.20 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 162.6 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2067.60 ms. Allocated memory was 202.4 MB in the beginning and 245.4 MB in the end (delta: 43.0 MB). Free memory was 162.0 MB in the beginning and 146.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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: 4]: Loop Invariant Derived loop invariant: ((!(a == pa) || !(b == a)) || !(a == pa)) || !(a == b) - ProcedureContractResult [Line: 17]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 4]: Procedure Contract for check Derived contract for procedure check: (((!(pa == a) || !(pa == a)) || (((a == b && a == b) && b == a) && a == b)) || !(b == a)) || !(a == b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 22 SDslu, 52 SDs, 0 SdLazy, 31 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 26 PreInvPairs, 33 NumberOfFragments, 240 HoareAnnotationTreeSize, 26 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 26 FomulaSimplificationsInter, 461 FormulaSimplificationTreeSizeReductionInter, 0.3s 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...