/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/test17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:21:58,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:21:58,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:21:58,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-18 00:21:58,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:21:58,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:21:58,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:21:58,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:21:58,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:21:58,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:21:58,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:21:58,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:21:58,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:21:58,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:21:58,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:21:58,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:21:58,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:21:58,763 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 00:21:58,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:21:58,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:21:58,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:21:58,775 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:21:58,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:21:58,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:21:58,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:21:58,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:21:58,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:21:58,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:21:58,776 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:21:58,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:21:58,777 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:21:58,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:21:58,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:21:58,778 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:21:58,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:21:58,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:21:58,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:21:58,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:21:58,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:21:58,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:21:58,779 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:21:59,061 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:21:59,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:21:59,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:21:59,081 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:21:59,082 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:21:59,083 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test17.c [2020-07-18 00:21:59,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebe893c4f/8223205235cb4bd3a992641bcfbc9570/FLAG0bfdc69c3 [2020-07-18 00:21:59,641 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:21:59,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test17.c [2020-07-18 00:21:59,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebe893c4f/8223205235cb4bd3a992641bcfbc9570/FLAG0bfdc69c3 [2020-07-18 00:22:00,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebe893c4f/8223205235cb4bd3a992641bcfbc9570 [2020-07-18 00:22:00,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:22:00,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:22:00,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:22:00,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:22:00,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:22:00,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:22:00" (1/1) ... [2020-07-18 00:22:00,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31dd821a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:00, skipping insertion in model container [2020-07-18 00:22:00,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:22:00" (1/1) ... [2020-07-18 00:22:00,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:22:00,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:22:00,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:22:00,243 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:22:00,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:22:00,286 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:22:00,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:00 WrapperNode [2020-07-18 00:22:00,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:22:00,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:22:00,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:22:00,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:22:00,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:00" (1/1) ... [2020-07-18 00:22:00,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:00" (1/1) ... [2020-07-18 00:22:00,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:00" (1/1) ... [2020-07-18 00:22:00,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:00" (1/1) ... [2020-07-18 00:22:00,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:00" (1/1) ... [2020-07-18 00:22:00,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:00" (1/1) ... [2020-07-18 00:22:00,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:00" (1/1) ... [2020-07-18 00:22:00,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:22:00,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:22:00,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:22:00,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:22:00,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:00" (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 00:22:00,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:22:00,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:22:00,489 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2020-07-18 00:22:00,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:22:00,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:22:00,490 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2020-07-18 00:22:00,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:22:00,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:22:00,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 00:22:00,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-18 00:22:00,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:22:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 00:22:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 00:22:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 00:22:00,815 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:22:00,815 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 00:22:00,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:22:00 BoogieIcfgContainer [2020-07-18 00:22:00,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:22:00,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:22:00,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:22:00,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:22:00,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:22:00" (1/3) ... [2020-07-18 00:22:00,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cd7ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:22:00, skipping insertion in model container [2020-07-18 00:22:00,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:00" (2/3) ... [2020-07-18 00:22:00,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cd7ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:22:00, skipping insertion in model container [2020-07-18 00:22:00,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:22:00" (3/3) ... [2020-07-18 00:22:00,827 INFO L109 eAbstractionObserver]: Analyzing ICFG test17.c [2020-07-18 00:22:00,835 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:22:00,843 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:22:00,858 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:22:00,881 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:22:00,881 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:22:00,881 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:22:00,881 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:22:00,882 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:22:00,882 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:22:00,882 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:22:00,882 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:22:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-18 00:22:00,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-18 00:22:00,906 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:22:00,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:22:00,908 INFO L427 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:22:00,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:22:00,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1638328089, now seen corresponding path program 1 times [2020-07-18 00:22:00,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:22:00,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350705793] [2020-07-18 00:22:00,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:22:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:22:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:22:01,254 INFO L280 TraceCheckUtils]: 0: Hoare triple {39#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= ~b~0 |old(~b~0)|) (= |old(#length)| |#length|))} #NULL.base, #NULL.offset := 0, 0; {26#true} is VALID [2020-07-18 00:22:01,254 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} #valid := #valid[0 := 0]; {26#true} is VALID [2020-07-18 00:22:01,255 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#true} assume 0 < #StackHeapBarrier; {26#true} is VALID [2020-07-18 00:22:01,255 INFO L280 TraceCheckUtils]: 3: Hoare triple {26#true} SUMMARY for call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4); srcloc: L14 {26#true} is VALID [2020-07-18 00:22:01,256 INFO L280 TraceCheckUtils]: 4: Hoare triple {26#true} SUMMARY for call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4); srcloc: L14-1 {26#true} is VALID [2020-07-18 00:22:01,256 INFO L280 TraceCheckUtils]: 5: Hoare triple {26#true} ~b~0 := 0; {26#true} is VALID [2020-07-18 00:22:01,257 INFO L280 TraceCheckUtils]: 6: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-18 00:22:01,257 INFO L275 TraceCheckUtils]: 7: Hoare quadruple {26#true} {26#true} #24#return; {26#true} is VALID [2020-07-18 00:22:01,262 INFO L263 TraceCheckUtils]: 0: Hoare triple {26#true} call ULTIMATE.init(); {39#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= ~b~0 |old(~b~0)|) (= |old(#length)| |#length|))} is VALID [2020-07-18 00:22:01,263 INFO L280 TraceCheckUtils]: 1: Hoare triple {39#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= ~b~0 |old(~b~0)|) (= |old(#length)| |#length|))} #NULL.base, #NULL.offset := 0, 0; {26#true} is VALID [2020-07-18 00:22:01,263 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#true} #valid := #valid[0 := 0]; {26#true} is VALID [2020-07-18 00:22:01,264 INFO L280 TraceCheckUtils]: 3: Hoare triple {26#true} assume 0 < #StackHeapBarrier; {26#true} is VALID [2020-07-18 00:22:01,264 INFO L280 TraceCheckUtils]: 4: Hoare triple {26#true} SUMMARY for call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4); srcloc: L14 {26#true} is VALID [2020-07-18 00:22:01,264 INFO L280 TraceCheckUtils]: 5: Hoare triple {26#true} SUMMARY for call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4); srcloc: L14-1 {26#true} is VALID [2020-07-18 00:22:01,265 INFO L280 TraceCheckUtils]: 6: Hoare triple {26#true} ~b~0 := 0; {26#true} is VALID [2020-07-18 00:22:01,265 INFO L280 TraceCheckUtils]: 7: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-18 00:22:01,266 INFO L275 TraceCheckUtils]: 8: Hoare quadruple {26#true} {26#true} #24#return; {26#true} is VALID [2020-07-18 00:22:01,266 INFO L263 TraceCheckUtils]: 9: Hoare triple {26#true} call #t~ret0 := main(); {26#true} is VALID [2020-07-18 00:22:01,270 INFO L263 TraceCheckUtils]: 10: Hoare triple {26#true} call equal(~#a~0.base, ~#a~0.offset, ~#a~0.base, ~#a~0.offset); {36#(and (= |equal_#in~a.offset| |equal_#in~b.offset|) (= |equal_#in~a.base| |equal_#in~b.base|))} is VALID [2020-07-18 00:22:01,271 INFO L280 TraceCheckUtils]: 11: Hoare triple {36#(and (= |equal_#in~a.offset| |equal_#in~b.offset|) (= |equal_#in~a.base| |equal_#in~b.base|))} ~a.base, ~a.offset := #in~a.base, #in~a.offset; {37#(and (= equal_~a.offset |equal_#in~b.offset|) (= equal_~a.base |equal_#in~b.base|))} is VALID [2020-07-18 00:22:01,273 INFO L280 TraceCheckUtils]: 12: Hoare triple {37#(and (= equal_~a.offset |equal_#in~b.offset|) (= equal_~a.base |equal_#in~b.base|))} ~b.base, ~b.offset := #in~b.base, #in~b.offset; {38#(and (= equal_~b.offset equal_~a.offset) (= equal_~a.base equal_~b.base))} is VALID [2020-07-18 00:22:01,274 INFO L280 TraceCheckUtils]: 13: Hoare triple {38#(and (= equal_~b.offset equal_~a.offset) (= equal_~a.base equal_~b.base))} assume ~a.base != ~b.base || ~a.offset != ~b.offset; {27#false} is VALID [2020-07-18 00:22:01,275 INFO L280 TraceCheckUtils]: 14: Hoare triple {27#false} assume !false; {27#false} is VALID [2020-07-18 00:22:01,278 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 00:22:01,285 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:22:01,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350705793] [2020-07-18 00:22:01,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:22:01,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-18 00:22:01,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78665229] [2020-07-18 00:22:01,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-18 00:22:01,300 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:22:01,303 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-18 00:22:01,350 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:22:01,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-18 00:22:01,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:22:01,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-18 00:22:01,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-18 00:22:01,364 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2020-07-18 00:22:01,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:22:01,830 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2020-07-18 00:22:01,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 00:22:01,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-18 00:22:01,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:22:01,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-18 00:22:01,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2020-07-18 00:22:01,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-18 00:22:01,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2020-07-18 00:22:01,852 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 29 transitions. [2020-07-18 00:22:01,905 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:22:01,912 INFO L225 Difference]: With dead ends: 30 [2020-07-18 00:22:01,913 INFO L226 Difference]: Without dead ends: 0 [2020-07-18 00:22:01,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-18 00:22:01,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-18 00:22:01,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-18 00:22:01,944 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:22:01,944 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-18 00:22:01,945 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 00:22:01,945 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 00:22:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:22:01,946 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 00:22:01,946 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 00:22:01,947 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:22:01,947 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:22:01,947 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 00:22:01,947 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 00:22:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:22:01,948 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 00:22:01,948 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 00:22:01,948 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:22:01,948 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:22:01,949 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:22:01,949 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:22:01,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-18 00:22:01,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-18 00:22:01,951 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-07-18 00:22:01,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:22:01,952 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-18 00:22:01,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-18 00:22:01,952 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-18 00:22:01,952 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 00:22:01,952 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 00:22:01,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:22:01,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:22:01,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-18 00:22:02,317 INFO L264 CegarLoopResult]: At program point equalEXIT(lines 4 12) the Hoare annotation is: (or (not (= |equal_#in~a.base| |equal_#in~b.base|)) (and (= equal_~b.offset equal_~a.offset) (= equal_~a.offset |equal_#in~b.offset|) (= equal_~a.base equal_~b.base) (= equal_~a.base |equal_#in~b.base|)) (not (= |equal_#in~a.offset| |equal_#in~b.offset|))) [2020-07-18 00:22:02,318 INFO L271 CegarLoopResult]: At program point equalENTRY(lines 4 12) the Hoare annotation is: true [2020-07-18 00:22:02,318 INFO L264 CegarLoopResult]: At program point equalFINAL(lines 4 12) the Hoare annotation is: (or (not (= |equal_#in~a.base| |equal_#in~b.base|)) (and (= equal_~b.offset equal_~a.offset) (= equal_~a.offset |equal_#in~b.offset|) (= equal_~a.base equal_~b.base) (= equal_~a.base |equal_#in~b.base|)) (not (= |equal_#in~a.offset| |equal_#in~b.offset|))) [2020-07-18 00:22:02,318 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: (or (not (= |equal_#in~a.base| |equal_#in~b.base|)) (not (= |equal_#in~a.offset| |equal_#in~b.offset|))) [2020-07-18 00:22:02,319 INFO L264 CegarLoopResult]: At program point L5(lines 5 7) the Hoare annotation is: (or (not (= |equal_#in~a.base| |equal_#in~b.base|)) (and (= equal_~b.offset equal_~a.offset) (= equal_~a.offset |equal_#in~b.offset|) (= equal_~a.base equal_~b.base) (= equal_~a.base |equal_#in~b.base|)) (not (= |equal_#in~a.offset| |equal_#in~b.offset|))) [2020-07-18 00:22:02,319 INFO L264 CegarLoopResult]: At program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (or (not (= |equal_#in~a.base| |equal_#in~b.base|)) (not (= |equal_#in~a.offset| |equal_#in~b.offset|))) [2020-07-18 00:22:02,319 INFO L264 CegarLoopResult]: At program point L4(lines 4 12) the Hoare annotation is: (or (not (= |equal_#in~a.base| |equal_#in~b.base|)) (and (= equal_~a.offset |equal_#in~b.offset|) (= equal_~a.base |equal_#in~b.base|)) (not (= |equal_#in~a.offset| |equal_#in~b.offset|))) [2020-07-18 00:22:02,319 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-18 00:22:02,320 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-07-18 00:22:02,320 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-18 00:22:02,320 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-18 00:22:02,320 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-07-18 00:22:02,320 INFO L271 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: true [2020-07-18 00:22:02,321 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#a~0.base| |old(~#a~0.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= ~b~0 |old(~b~0)|) (= |old(#length)| |#length|)) [2020-07-18 00:22:02,321 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-18 00:22:02,321 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-18 00:22:02,321 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-18 00:22:02,321 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-18 00:22:02,322 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-18 00:22:02,322 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-07-18 00:22:02,322 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 19) the Hoare annotation is: true [2020-07-18 00:22:02,322 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 16 19) the Hoare annotation is: true [2020-07-18 00:22:02,322 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 16 19) the Hoare annotation is: true [2020-07-18 00:22:02,336 INFO L163 areAnnotationChecker]: CFG has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 00:22:02,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 12:22:02 BoogieIcfgContainer [2020-07-18 00:22:02,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 00:22:02,358 INFO L168 Benchmark]: Toolchain (without parser) took 2334.58 ms. Allocated memory was 137.4 MB in the beginning and 232.8 MB in the end (delta: 95.4 MB). Free memory was 102.9 MB in the beginning and 115.7 MB in the end (delta: -12.8 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-07-18 00:22:02,359 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 00:22:02,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.40 ms. Allocated memory is still 137.4 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-18 00:22:02,361 INFO L168 Benchmark]: Boogie Preprocessor took 133.90 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 92.9 MB in the beginning and 180.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-18 00:22:02,362 INFO L168 Benchmark]: RCFGBuilder took 397.34 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 164.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:22:02,364 INFO L168 Benchmark]: TraceAbstraction took 1533.09 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 163.7 MB in the beginning and 115.7 MB in the end (delta: 48.0 MB). Peak memory consumption was 78.9 MB. Max. memory is 7.1 GB. [2020-07-18 00:22:02,368 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 0.45 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.40 ms. Allocated memory is still 137.4 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.90 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 92.9 MB in the beginning and 180.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 397.34 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 164.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1533.09 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 163.7 MB in the beginning and 115.7 MB in the end (delta: 48.0 MB). Peak memory consumption was 78.9 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 == b) || !(a == b) - ProcedureContractResult [Line: 4]: Procedure Contract for equal Derived contract for procedure equal: (!(a == b) || (((b == a && a == b) && a == b) && a == b)) || !(a == b) - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 15 SDslu, 41 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 23 LocationsWithAnnotation, 23 PreInvPairs, 30 NumberOfFragments, 138 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 23 FomulaSimplificationsInter, 228 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...