/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/test03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 15:06:13,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 15:06:13,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 15:06:14,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-10 15:06:14,079 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 [2020-07-10 15:06:14,116 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 15:06:14,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 15:06:14,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-10 15:06:14,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-10 15:06:14,118 INFO L138 SettingsManager]: * Use SBE=true [2020-07-10 15:06:14,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 15:06:14,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 15:06:14,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 15:06:14,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 15:06:14,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 15:06:14,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 15:06:14,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 15:06:14,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 15:06:14,123 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 15:06:14,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 15:06:14,123 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 15:06:14,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 15:06:14,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 15:06:14,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-10 15:06:14,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 15:06:14,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 15:06:14,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 15:06:14,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 15:06:14,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-10 15:06:14,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-10 15:06:14,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-10 15:06:14,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-10 15:06:14,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 15:06:14,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-10 15:06:14,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-10 15:06:14,431 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 15:06:14,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 15:06:14,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 15:06:14,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 15:06:14,449 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 15:06:14,450 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test03.c [2020-07-10 15:06:14,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e3338621/c2a65dd9bb7d4e299c6b393400c092e8/FLAG6cf81ed7f [2020-07-10 15:06:14,929 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 15:06:14,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test03.c [2020-07-10 15:06:14,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e3338621/c2a65dd9bb7d4e299c6b393400c092e8/FLAG6cf81ed7f [2020-07-10 15:06:15,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e3338621/c2a65dd9bb7d4e299c6b393400c092e8 [2020-07-10 15:06:15,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 15:06:15,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 15:06:15,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 15:06:15,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 15:06:15,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 15:06:15,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:06:15" (1/1) ... [2020-07-10 15:06:15,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9673511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:15, skipping insertion in model container [2020-07-10 15:06:15,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:06:15" (1/1) ... [2020-07-10 15:06:15,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 15:06:15,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 15:06:15,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:06:15,671 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 15:06:15,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:06:15,728 INFO L208 MainTranslator]: Completed translation [2020-07-10 15:06:15,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:15 WrapperNode [2020-07-10 15:06:15,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 15:06:15,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 15:06:15,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 15:06:15,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 15:06:15,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:15" (1/1) ... [2020-07-10 15:06:15,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:15" (1/1) ... [2020-07-10 15:06:15,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:15" (1/1) ... [2020-07-10 15:06:15,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:15" (1/1) ... [2020-07-10 15:06:15,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:15" (1/1) ... [2020-07-10 15:06:15,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:15" (1/1) ... [2020-07-10 15:06:15,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:15" (1/1) ... [2020-07-10 15:06:15,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 15:06:15,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 15:06:15,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 15:06:15,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 15:06:15,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:15" (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 [2020-07-10 15:06:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 15:06:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 15:06:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-10 15:06:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 15:06:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 15:06:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-10 15:06:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 15:06:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-10 15:06:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-10 15:06:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-10 15:06:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-10 15:06:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 15:06:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 15:06:16,195 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 15:06:16,196 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-10 15:06:16,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:06:16 BoogieIcfgContainer [2020-07-10 15:06:16,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 15:06:16,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 15:06:16,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 15:06:16,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 15:06:16,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 03:06:15" (1/3) ... [2020-07-10 15:06:16,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6e4a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:06:16, skipping insertion in model container [2020-07-10 15:06:16,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:15" (2/3) ... [2020-07-10 15:06:16,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6e4a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:06:16, skipping insertion in model container [2020-07-10 15:06:16,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:06:16" (3/3) ... [2020-07-10 15:06:16,222 INFO L109 eAbstractionObserver]: Analyzing ICFG test03.c [2020-07-10 15:06:16,237 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-10 15:06:16,244 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 15:06:16,267 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 15:06:16,292 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 15:06:16,292 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 15:06:16,292 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-10 15:06:16,293 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 15:06:16,293 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 15:06:16,293 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 15:06:16,300 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 15:06:16,300 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 15:06:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-10 15:06:16,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-10 15:06:16,320 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:06:16,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:06:16,322 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:06:16,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:06:16,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1498735640, now seen corresponding path program 1 times [2020-07-10 15:06:16,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:06:16,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664946235] [2020-07-10 15:06:16,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:06:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:16,641 INFO L280 TraceCheckUtils]: 0: Hoare triple {32#(and (= ~q~0 |old(~q~0)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~q~0 := 0; {21#true} is VALID [2020-07-10 15:06:16,641 INFO L280 TraceCheckUtils]: 1: Hoare triple {21#true} assume true; {21#true} is VALID [2020-07-10 15:06:16,642 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {21#true} {21#true} #19#return; {21#true} is VALID [2020-07-10 15:06:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:16,717 INFO L280 TraceCheckUtils]: 0: Hoare triple {21#true} ~p1.base, ~p1.offset := #in~p1.base, #in~p1.offset;~p2.base, ~p2.offset := #in~p2.base, #in~p2.offset;#res := (if ~p1.base == ~p2.base && ~p1.offset == ~p2.offset then 1 else 0); {33#(and (or (= |f_#in~p1.base| |f_#in~p2.base|) (<= |f_#res| 0)) (<= 0 |f_#res|))} is VALID [2020-07-10 15:06:16,719 INFO L280 TraceCheckUtils]: 1: Hoare triple {33#(and (or (= |f_#in~p1.base| |f_#in~p2.base|) (<= |f_#res| 0)) (<= 0 |f_#res|))} assume true; {33#(and (or (= |f_#in~p1.base| |f_#in~p2.base|) (<= |f_#res| 0)) (<= 0 |f_#res|))} is VALID [2020-07-10 15:06:16,723 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {33#(and (or (= |f_#in~p1.base| |f_#in~p2.base|) (<= |f_#res| 0)) (<= 0 |f_#res|))} {26#(not (= main_~p1~0.base main_~p2~0.base))} #23#return; {30#(= 0 |main_#t~ret0|)} is VALID [2020-07-10 15:06:16,726 INFO L263 TraceCheckUtils]: 0: Hoare triple {21#true} call ULTIMATE.init(); {32#(and (= ~q~0 |old(~q~0)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-10 15:06:16,726 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#(and (= ~q~0 |old(~q~0)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~q~0 := 0; {21#true} is VALID [2020-07-10 15:06:16,727 INFO L280 TraceCheckUtils]: 2: Hoare triple {21#true} assume true; {21#true} is VALID [2020-07-10 15:06:16,727 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {21#true} {21#true} #19#return; {21#true} is VALID [2020-07-10 15:06:16,727 INFO L263 TraceCheckUtils]: 4: Hoare triple {21#true} call #t~ret2 := main(); {21#true} is VALID [2020-07-10 15:06:16,730 INFO L280 TraceCheckUtils]: 5: Hoare triple {21#true} call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);~q~0 := 0;~p1~0.base, ~p1~0.offset := ~#a~0.base, ~#a~0.offset;~p2~0.base, ~p2~0.offset := ~#b~0.base, ~#b~0.offset; {26#(not (= main_~p1~0.base main_~p2~0.base))} is VALID [2020-07-10 15:06:16,730 INFO L263 TraceCheckUtils]: 6: Hoare triple {26#(not (= main_~p1~0.base main_~p2~0.base))} call #t~ret0 := f(~p1~0.base, ~p1~0.offset, ~p2~0.base, ~p2~0.offset); {21#true} is VALID [2020-07-10 15:06:16,732 INFO L280 TraceCheckUtils]: 7: Hoare triple {21#true} ~p1.base, ~p1.offset := #in~p1.base, #in~p1.offset;~p2.base, ~p2.offset := #in~p2.base, #in~p2.offset;#res := (if ~p1.base == ~p2.base && ~p1.offset == ~p2.offset then 1 else 0); {33#(and (or (= |f_#in~p1.base| |f_#in~p2.base|) (<= |f_#res| 0)) (<= 0 |f_#res|))} is VALID [2020-07-10 15:06:16,734 INFO L280 TraceCheckUtils]: 8: Hoare triple {33#(and (or (= |f_#in~p1.base| |f_#in~p2.base|) (<= |f_#res| 0)) (<= 0 |f_#res|))} assume true; {33#(and (or (= |f_#in~p1.base| |f_#in~p2.base|) (<= |f_#res| 0)) (<= 0 |f_#res|))} is VALID [2020-07-10 15:06:16,738 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {33#(and (or (= |f_#in~p1.base| |f_#in~p2.base|) (<= |f_#res| 0)) (<= 0 |f_#res|))} {26#(not (= main_~p1~0.base main_~p2~0.base))} #23#return; {30#(= 0 |main_#t~ret0|)} is VALID [2020-07-10 15:06:16,741 INFO L280 TraceCheckUtils]: 10: Hoare triple {30#(= 0 |main_#t~ret0|)} assume -2147483648 <= #t~ret0 && #t~ret0 <= 2147483647;call write~int(#t~ret0, ~#a~0.base, ~#a~0.offset, 4);havoc #t~ret0;call #t~mem1 := read~int(~#a~0.base, ~#a~0.offset, 4); {31#(= 0 |main_#t~mem1|)} is VALID [2020-07-10 15:06:16,742 INFO L280 TraceCheckUtils]: 11: Hoare triple {31#(= 0 |main_#t~mem1|)} assume 0 != #t~mem1;havoc #t~mem1; {22#false} is VALID [2020-07-10 15:06:16,743 INFO L280 TraceCheckUtils]: 12: Hoare triple {22#false} assume !false; {22#false} is VALID [2020-07-10 15:06:16,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:06:16,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664946235] [2020-07-10 15:06:16,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:06:16,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-10 15:06:16,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225687568] [2020-07-10 15:06:16,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-10 15:06:16,766 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:06:16,770 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-10 15:06:16,816 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:16,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-10 15:06:16,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:06:16,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-10 15:06:16,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-10 15:06:16,830 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 7 states. [2020-07-10 15:06:17,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:17,115 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-07-10 15:06:17,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-10 15:06:17,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-10 15:06:17,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:06:17,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-10 15:06:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2020-07-10 15:06:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-10 15:06:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2020-07-10 15:06:17,134 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 21 transitions. [2020-07-10 15:06:17,198 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:17,206 INFO L225 Difference]: With dead ends: 22 [2020-07-10 15:06:17,206 INFO L226 Difference]: Without dead ends: 0 [2020-07-10 15:06:17,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-10 15:06:17,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-10 15:06:17,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-10 15:06:17,236 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:06:17,237 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-10 15:06:17,237 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-10 15:06:17,237 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-10 15:06:17,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:17,238 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-10 15:06:17,238 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 15:06:17,239 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:17,239 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:17,239 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-10 15:06:17,240 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-10 15:06:17,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:17,240 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-10 15:06:17,240 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 15:06:17,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:17,241 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:17,241 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:06:17,241 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:06:17,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-10 15:06:17,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-10 15:06:17,244 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-10 15:06:17,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:06:17,244 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-10 15:06:17,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-10 15:06:17,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 15:06:17,245 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:17,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 15:06:17,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-10 15:06:17,316 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-10 15:06:17,317 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~q~0 |old(~q~0)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-10 15:06:17,317 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-10 15:06:17,317 INFO L268 CegarLoopResult]: For program point fEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-10 15:06:17,317 INFO L271 CegarLoopResult]: At program point fENTRY(lines 4 6) the Hoare annotation is: true [2020-07-10 15:06:17,318 INFO L268 CegarLoopResult]: For program point fFINAL(lines 4 6) no Hoare annotation was computed. [2020-07-10 15:06:17,318 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-10 15:06:17,318 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-10 15:06:17,318 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-10 15:06:17,318 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-10 15:06:17,318 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-07-10 15:06:17,319 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2020-07-10 15:06:17,319 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 28) the Hoare annotation is: (and (= ~q~0 |old(~q~0)|) (= |#valid| |old(#valid)|)) [2020-07-10 15:06:17,319 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 28) no Hoare annotation was computed. [2020-07-10 15:06:17,319 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 28) no Hoare annotation was computed. [2020-07-10 15:06:17,319 INFO L264 CegarLoopResult]: At program point L21(lines 10 28) the Hoare annotation is: false [2020-07-10 15:06:17,320 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-07-10 15:06:17,320 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (not (= main_~p1~0.base main_~p2~0.base)) [2020-07-10 15:06:17,325 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 15:06:17,325 WARN L170 areAnnotationChecker]: fFINAL has no Hoare annotation [2020-07-10 15:06:17,328 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 15:06:17,328 WARN L170 areAnnotationChecker]: fFINAL has no Hoare annotation [2020-07-10 15:06:17,328 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 15:06:17,329 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2020-07-10 15:06:17,329 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 15:06:17,330 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-10 15:06:17,330 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 15:06:17,330 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2020-07-10 15:06:17,330 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-10 15:06:17,330 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-10 15:06:17,330 WARN L170 areAnnotationChecker]: mainErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2020-07-10 15:06:17,331 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 15:06:17,331 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 15:06:17,331 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 15:06:17,331 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. [2020-07-10 15:06:17,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 03:06:17 BoogieIcfgContainer [2020-07-10 15:06:17,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 15:06:17,342 INFO L168 Benchmark]: Toolchain (without parser) took 1959.24 ms. Allocated memory was 137.4 MB in the beginning and 232.8 MB in the end (delta: 95.4 MB). Free memory was 102.0 MB in the beginning and 187.8 MB in the end (delta: -85.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:17,343 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-10 15:06:17,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.82 ms. Allocated memory is still 137.4 MB. Free memory was 101.8 MB in the beginning and 91.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:17,345 INFO L168 Benchmark]: Boogie Preprocessor took 130.47 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 178.9 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:17,346 INFO L168 Benchmark]: RCFGBuilder took 340.61 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 161.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:17,347 INFO L168 Benchmark]: TraceAbstraction took 1136.10 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 161.1 MB in the beginning and 187.8 MB in the end (delta: -26.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:17,351 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 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 338.82 ms. Allocated memory is still 137.4 MB. Free memory was 101.8 MB in the beginning and 91.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.47 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 178.9 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.61 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 161.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1136.10 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 161.1 MB in the beginning and 187.8 MB in the end (delta: -26.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: 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: 10]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 3 SDslu, 34 SDs, 0 SdLazy, 32 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s 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, 28 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 612 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...