/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:29:54,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:29:54,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:29:54,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-17 22:29:54,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:29:54,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:29:54,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:29:54,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:29:54,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:29:54,590 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:29:54,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:29:54,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:29:54,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:29:54,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:29:54,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:29:54,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:29:54,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:29:54,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:29:54,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:29:54,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:29:54,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:29:54,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:29:54,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:29:54,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:29:54,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:29:54,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:29:54,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:29:54,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:29:54,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:29:54,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:29:54,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:29:54,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:29:54,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:29:54,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:29:54,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:29:54,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:29:54,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:29:54,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:29:54,926 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:29:54,926 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:29:54,927 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test16.c [2020-07-17 22:29:55,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/894830fc2/6c394d0fd293402990263f844dde9415/FLAG1a5dd56ec [2020-07-17 22:29:55,492 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:29:55,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test16.c [2020-07-17 22:29:55,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/894830fc2/6c394d0fd293402990263f844dde9415/FLAG1a5dd56ec [2020-07-17 22:29:55,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/894830fc2/6c394d0fd293402990263f844dde9415 [2020-07-17 22:29:55,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:29:55,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:29:55,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:29:55,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:29:55,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:29:55,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:29:55" (1/1) ... [2020-07-17 22:29:55,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6f94b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:55, skipping insertion in model container [2020-07-17 22:29:55,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:29:55" (1/1) ... [2020-07-17 22:29:55,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:29:55,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:29:56,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:29:56,157 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:29:56,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:29:56,190 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:29:56,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:56 WrapperNode [2020-07-17 22:29:56,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:29:56,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:29:56,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:29:56,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:29:56,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:56" (1/1) ... [2020-07-17 22:29:56,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:56" (1/1) ... [2020-07-17 22:29:56,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:56" (1/1) ... [2020-07-17 22:29:56,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:56" (1/1) ... [2020-07-17 22:29:56,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:56" (1/1) ... [2020-07-17 22:29:56,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:56" (1/1) ... [2020-07-17 22:29:56,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:56" (1/1) ... [2020-07-17 22:29:56,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:29:56,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:29:56,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:29:56,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:29:56,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:56" (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 [2020-07-17 22:29:56,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:29:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:29:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2020-07-17 22:29:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:29:56,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:29:56,370 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2020-07-17 22:29:56,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 22:29:56,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:29:56,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 22:29:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:29:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 22:29:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-17 22:29:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:29:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:29:56,644 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:29:56,645 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 22:29:56,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:29:56 BoogieIcfgContainer [2020-07-17 22:29:56,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:29:56,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:29:56,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:29:56,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:29:56,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:29:55" (1/3) ... [2020-07-17 22:29:56,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574f683f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:29:56, skipping insertion in model container [2020-07-17 22:29:56,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:56" (2/3) ... [2020-07-17 22:29:56,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574f683f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:29:56, skipping insertion in model container [2020-07-17 22:29:56,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:29:56" (3/3) ... [2020-07-17 22:29:56,659 INFO L109 eAbstractionObserver]: Analyzing ICFG test16.c [2020-07-17 22:29:56,672 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:29:56,681 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:29:56,699 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:29:56,728 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:29:56,728 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:29:56,728 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:29:56,728 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:29:56,729 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:29:56,729 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:29:56,729 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:29:56,730 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:29:56,760 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-17 22:29:56,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:29:56,767 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:29:56,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:29:56,768 INFO L427 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:29:56,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:29:56,775 INFO L82 PathProgramCache]: Analyzing trace with hash 390654600, now seen corresponding path program 1 times [2020-07-17 22:29:56,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:29:56,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756150255] [2020-07-17 22:29:56,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:29:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:29:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:29:57,260 INFO L280 TraceCheckUtils]: 0: Hoare triple {30#(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;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4);~pa~0.base, ~pa~0.offset := 0, 0;~pb~0.base, ~pb~0.offset := 0, 0; {26#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-17 22:29:57,263 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#(not (= |~#b~0.base| |~#a~0.base|))} assume true; {26#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-17 22:29:57,264 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {26#(not (= |~#b~0.base| |~#a~0.base|))} {21#true} #19#return; {26#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-17 22:29:57,270 INFO L263 TraceCheckUtils]: 0: Hoare triple {21#true} call ULTIMATE.init(); {30#(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 [2020-07-17 22:29:57,274 INFO L280 TraceCheckUtils]: 1: Hoare triple {30#(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;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4);~pa~0.base, ~pa~0.offset := 0, 0;~pb~0.base, ~pb~0.offset := 0, 0; {26#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-17 22:29:57,280 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#(not (= |~#b~0.base| |~#a~0.base|))} assume true; {26#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-17 22:29:57,283 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {26#(not (= |~#b~0.base| |~#a~0.base|))} {21#true} #19#return; {26#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-17 22:29:57,284 INFO L263 TraceCheckUtils]: 4: Hoare triple {26#(not (= |~#b~0.base| |~#a~0.base|))} call #t~ret3 := main(); {26#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-17 22:29:57,287 INFO L280 TraceCheckUtils]: 5: Hoare triple {26#(not (= |~#b~0.base| |~#a~0.base|))} ~pa~0.base, ~pa~0.offset := ~#a~0.base, ~#a~0.offset;~pb~0.base, ~pb~0.offset := ~#b~0.base, ~#b~0.offset;call write~int(0, ~#a~0.base, ~#a~0.offset, 4);call write~int(1, ~#b~0.base, ~#b~0.offset, 4);call #t~mem2 := read~int(~pb~0.base, ~pb~0.offset, 4);call write~int(#t~mem2, ~pa~0.base, ~pa~0.offset, 4);havoc #t~mem2; {27#(= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))} is VALID [2020-07-17 22:29:57,291 INFO L263 TraceCheckUtils]: 6: Hoare triple {27#(= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))} call equal(~#a~0.base, ~#a~0.offset, ~#b~0.base, ~#b~0.offset); {28#(= (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|) (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|))} is VALID [2020-07-17 22:29:57,292 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#(= (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|) (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|))} ~a.base, ~a.offset := #in~a.base, #in~a.offset;~b.base, ~b.offset := #in~b.base, #in~b.offset;call #t~mem0 := read~int(~a.base, ~a.offset, 4);call #t~mem1 := read~int(~b.base, ~b.offset, 4); {29#(= |equal_#t~mem1| |equal_#t~mem0|)} is VALID [2020-07-17 22:29:57,293 INFO L280 TraceCheckUtils]: 8: Hoare triple {29#(= |equal_#t~mem1| |equal_#t~mem0|)} assume #t~mem0 != #t~mem1;havoc #t~mem0;havoc #t~mem1; {22#false} is VALID [2020-07-17 22:29:57,294 INFO L280 TraceCheckUtils]: 9: Hoare triple {22#false} assume !false; {22#false} is VALID [2020-07-17 22:29:57,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:29:57,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756150255] [2020-07-17 22:29:57,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:29:57,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 22:29:57,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182066792] [2020-07-17 22:29:57,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-07-17 22:29:57,317 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:29:57,321 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-17 22:29:57,355 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:29:57,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 22:29:57,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:29:57,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 22:29:57,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 22:29:57,371 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 7 states. [2020-07-17 22:29:57,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:29:57,961 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-17 22:29:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 22:29:57,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-07-17 22:29:57,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:29:57,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-17 22:29:57,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2020-07-17 22:29:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-17 22:29:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2020-07-17 22:29:57,982 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 24 transitions. [2020-07-17 22:29:58,035 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:29:58,043 INFO L225 Difference]: With dead ends: 25 [2020-07-17 22:29:58,043 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 22:29:58,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-07-17 22:29:58,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 22:29:58,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 22:29:58,076 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:29:58,077 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:58,077 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:58,077 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:58,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:29:58,078 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:29:58,079 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:29:58,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:29:58,079 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:29:58,079 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:58,079 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:58,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:29:58,080 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:29:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:29:58,080 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:29:58,081 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:29:58,081 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:29:58,081 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:29:58,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 22:29:58,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 22:29:58,083 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-17 22:29:58,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:29:58,084 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 22:29:58,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 22:29:58,084 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:29:58,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:29:58,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:29:58,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 22:29:58,281 INFO L268 CegarLoopResult]: For program point equalEXIT(lines 4 12) no Hoare annotation was computed. [2020-07-17 22:29:58,281 INFO L271 CegarLoopResult]: At program point equalENTRY(lines 4 12) the Hoare annotation is: true [2020-07-17 22:29:58,282 INFO L268 CegarLoopResult]: For program point equalFINAL(lines 4 12) no Hoare annotation was computed. [2020-07-17 22:29:58,282 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|) (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|))) (not (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)))) [2020-07-17 22:29:58,282 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-07-17 22:29:58,282 INFO L268 CegarLoopResult]: For program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-07-17 22:29:58,283 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:29:58,283 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)|)) [2020-07-17 22:29:58,283 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:29:58,283 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:29:58,284 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) [2020-07-17 22:29:58,284 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 22:29:58,284 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:29:58,284 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 17 28) the Hoare annotation is: (or (and (= |old(~pa~0.offset)| ~pa~0.offset) (= ~pa~0.base |old(~pa~0.base)|) (= |old(~pb~0.offset)| ~pb~0.offset) (= |old(~pb~0.base)| ~pb~0.base) (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) (= |~#b~0.base| |~#a~0.base|) (not (= (select (select |old(#memory_int)| |~#a~0.base|) |~#a~0.offset|) (select (select |old(#memory_int)| |~#b~0.base|) |~#b~0.offset|)))) [2020-07-17 22:29:58,285 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 17 28) no Hoare annotation was computed. [2020-07-17 22:29:58,285 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|)) (not (= (select (select |old(#memory_int)| |~#a~0.base|) |~#a~0.offset|) (select (select |old(#memory_int)| |~#b~0.base|) |~#b~0.offset|)))) [2020-07-17 22:29:58,285 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-07-17 22:29:58,285 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 28) no Hoare annotation was computed. [2020-07-17 22:29:58,291 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-17 22:29:58,291 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:29:58,295 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-17 22:29:58,296 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-17 22:29:58,296 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:29:58,296 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:29:58,298 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2020-07-17 22:29:58,298 WARN L170 areAnnotationChecker]: equalErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2020-07-17 22:29:58,298 WARN L170 areAnnotationChecker]: equalFINAL has no Hoare annotation [2020-07-17 22:29:58,299 WARN L170 areAnnotationChecker]: equalFINAL has no Hoare annotation [2020-07-17 22:29:58,299 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:29:58,299 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:29:58,299 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2020-07-17 22:29:58,299 WARN L170 areAnnotationChecker]: equalEXIT has no Hoare annotation [2020-07-17 22:29:58,299 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:29:58,300 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:29:58,300 INFO L163 areAnnotationChecker]: CFG has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:29:58,309 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,310 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,311 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,311 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,314 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,315 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,315 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,315 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:29:58 BoogieIcfgContainer [2020-07-17 22:29:58,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:29:58,322 INFO L168 Benchmark]: Toolchain (without parser) took 2432.11 ms. Allocated memory was 138.9 MB in the beginning and 235.4 MB in the end (delta: 96.5 MB). Free memory was 103.5 MB in the beginning and 114.9 MB in the end (delta: -11.3 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:58,323 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-17 22:29:58,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.89 ms. Allocated memory is still 138.9 MB. Free memory was 103.1 MB in the beginning and 93.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:58,325 INFO L168 Benchmark]: Boogie Preprocessor took 115.35 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 93.1 MB in the beginning and 178.9 MB in the end (delta: -85.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:58,326 INFO L168 Benchmark]: RCFGBuilder took 343.46 ms. Allocated memory is still 201.3 MB. Free memory was 178.9 MB in the beginning and 161.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:58,327 INFO L168 Benchmark]: TraceAbstraction took 1666.79 ms. Allocated memory was 201.3 MB in the beginning and 235.4 MB in the end (delta: 34.1 MB). Free memory was 161.1 MB in the beginning and 114.9 MB in the end (delta: 46.3 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:58,332 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 0.59 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 298.89 ms. Allocated memory is still 138.9 MB. Free memory was 103.1 MB in the beginning and 93.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.35 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 93.1 MB in the beginning and 178.9 MB in the end (delta: -85.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 343.46 ms. Allocated memory is still 201.3 MB. Free memory was 178.9 MB in the beginning and 161.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1666.79 ms. Allocated memory was 201.3 MB in the beginning and 235.4 MB in the end (delta: 34.1 MB). Free memory was 161.1 MB in the beginning and 114.9 MB in the end (delta: 46.3 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * 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 [2020-07-17 22:29:58,342 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:29:58,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (a == b || !(unknown-#memory_int-unknown[b][b] == unknown-#memory_int-unknown[a][a])) || !(unknown-#memory_int-unknown[a][a] == unknown-#memory_int-unknown[b][b]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 15 SDslu, 18 SDs, 0 SdLazy, 23 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 150 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 711 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...