java -ea -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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/test07_true-unreach-call_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-370d6ab [2018-11-14 17:23:12,815 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-14 17:23:12,818 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-14 17:23:12,833 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-14 17:23:12,834 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-14 17:23:12,835 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-14 17:23:12,836 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-14 17:23:12,838 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-14 17:23:12,840 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-14 17:23:12,841 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-14 17:23:12,843 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-14 17:23:12,843 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-14 17:23:12,844 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-14 17:23:12,847 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-14 17:23:12,849 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-14 17:23:12,850 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-14 17:23:12,851 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-14 17:23:12,854 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-14 17:23:12,864 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-14 17:23:12,866 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-14 17:23:12,867 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-14 17:23:12,870 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-14 17:23:12,875 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-14 17:23:12,887 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-14 17:23:12,906 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-14 17:23:12,906 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-14 17:23:12,907 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-14 17:23:12,907 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-14 17:23:12,909 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-14 17:23:12,910 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-14 17:23:12,910 INFO L133 SettingsManager]: * Use SBE=true [2018-11-14 17:23:12,910 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-14 17:23:12,910 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-14 17:23:12,910 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-14 17:23:12,911 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-14 17:23:12,911 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-14 17:23:12,911 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-14 17:23:12,911 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-14 17:23:12,911 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-14 17:23:12,911 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-14 17:23:12,912 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-14 17:23:12,912 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-14 17:23:12,912 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-14 17:23:12,912 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-14 17:23:12,912 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-14 17:23:12,913 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-14 17:23:12,913 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-14 17:23:12,913 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-14 17:23:12,913 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-14 17:23:12,913 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-14 17:23:12,914 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-14 17:23:12,914 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-14 17:23:12,914 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-14 17:23:12,914 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-14 17:23:12,972 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-14 17:23:12,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-14 17:23:12,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-14 17:23:12,997 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-14 17:23:12,997 INFO L276 PluginConnector]: CDTParser initialized [2018-11-14 17:23:12,998 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test07_true-unreach-call_true-termination.c [2018-11-14 17:23:13,070 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/133236fe0/0e097fc277d148e386c6a86e2c25e6b5/FLAG97a670502 [2018-11-14 17:23:13,556 INFO L298 CDTParser]: Found 1 translation units. [2018-11-14 17:23:13,556 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test07_true-unreach-call_true-termination.c [2018-11-14 17:23:13,565 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/133236fe0/0e097fc277d148e386c6a86e2c25e6b5/FLAG97a670502 [2018-11-14 17:23:13,580 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/133236fe0/0e097fc277d148e386c6a86e2c25e6b5 [2018-11-14 17:23:13,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-14 17:23:13,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-11-14 17:23:13,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-14 17:23:13,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-14 17:23:13,596 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-14 17:23:13,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:23:13" (1/1) ... [2018-11-14 17:23:13,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa181a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:13, skipping insertion in model container [2018-11-14 17:23:13,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:23:13" (1/1) ... [2018-11-14 17:23:13,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-14 17:23:13,633 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-14 17:23:13,861 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 17:23:13,876 INFO L191 MainTranslator]: Completed pre-run [2018-11-14 17:23:13,896 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 17:23:13,916 INFO L195 MainTranslator]: Completed translation [2018-11-14 17:23:13,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:13 WrapperNode [2018-11-14 17:23:13,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-14 17:23:13,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-14 17:23:13,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-14 17:23:13,918 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-14 17:23:13,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:13" (1/1) ... [2018-11-14 17:23:13,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:13" (1/1) ... [2018-11-14 17:23:13,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:13" (1/1) ... [2018-11-14 17:23:13,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:13" (1/1) ... [2018-11-14 17:23:13,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:13" (1/1) ... [2018-11-14 17:23:13,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:13" (1/1) ... [2018-11-14 17:23:13,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:13" (1/1) ... [2018-11-14 17:23:13,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-14 17:23:13,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-14 17:23:13,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-14 17:23:13,961 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-14 17:23:13,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:13" (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 [2018-11-14 17:23:14,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-14 17:23:14,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-14 17:23:14,113 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-11-14 17:23:14,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-14 17:23:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-14 17:23:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-11-14 17:23:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-14 17:23:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-14 17:23:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-14 17:23:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-14 17:23:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-14 17:23:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-14 17:23:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-14 17:23:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-14 17:23:14,629 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-14 17:23:14,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:23:14 BoogieIcfgContainer [2018-11-14 17:23:14,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-14 17:23:14,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-14 17:23:14,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-14 17:23:14,634 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-14 17:23:14,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:23:13" (1/3) ... [2018-11-14 17:23:14,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc71df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:23:14, skipping insertion in model container [2018-11-14 17:23:14,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:13" (2/3) ... [2018-11-14 17:23:14,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc71df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:23:14, skipping insertion in model container [2018-11-14 17:23:14,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:23:14" (3/3) ... [2018-11-14 17:23:14,638 INFO L112 eAbstractionObserver]: Analyzing ICFG test07_true-unreach-call_true-termination.c [2018-11-14 17:23:14,648 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-14 17:23:14,656 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-14 17:23:14,670 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-14 17:23:14,701 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-14 17:23:14,702 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-14 17:23:14,703 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-14 17:23:14,703 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-14 17:23:14,703 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-14 17:23:14,703 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-14 17:23:14,703 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-14 17:23:14,703 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-14 17:23:14,704 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-14 17:23:14,723 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-14 17:23:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-14 17:23:14,729 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:23:14,730 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:23:14,733 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:23:14,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:23:14,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1889415219, now seen corresponding path program 1 times [2018-11-14 17:23:14,742 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:23:14,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:23:14,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:23:14,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:23:14,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:23:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:23:15,405 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-11-14 17:23:15,451 INFO L256 TraceCheckUtils]: 0: Hoare triple {22#true} call ULTIMATE.init(); {22#true} is VALID [2018-11-14 17:23:15,454 INFO L273 TraceCheckUtils]: 1: Hoare triple {22#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];call ~#a~0.base, ~#a~0.offset := #Ultimate.alloc(4);call write~unchecked~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.alloc(4);call write~unchecked~int(0, ~#b~0.base, ~#b~0.offset, 4);~p1~0.base, ~p1~0.offset := 0, 0;~p2~0.base, ~p2~0.offset := 0, 0; {22#true} is VALID [2018-11-14 17:23:15,455 INFO L273 TraceCheckUtils]: 2: Hoare triple {22#true} assume true; {22#true} is VALID [2018-11-14 17:23:15,456 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {22#true} {22#true} #23#return; {22#true} is VALID [2018-11-14 17:23:15,456 INFO L256 TraceCheckUtils]: 4: Hoare triple {22#true} call #t~ret7 := main(); {22#true} is VALID [2018-11-14 17:23:15,456 INFO L273 TraceCheckUtils]: 5: Hoare triple {22#true} ~p1~0.base, ~p1~0.offset := ~#a~0.base, ~#a~0.offset;~p2~0.base, ~p2~0.offset := ~#b~0.base, ~#b~0.offset;call write~int(1, ~#b~0.base, ~#b~0.offset, 4);call write~int(5, ~#a~0.base, ~#a~0.offset, 4);call #t~mem3 := read~int(~#a~0.base, ~#a~0.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~#a~0.base, ~#a~0.offset, 4);havoc #t~post4;havoc #t~mem3; {22#true} is VALID [2018-11-14 17:23:15,457 INFO L256 TraceCheckUtils]: 6: Hoare triple {22#true} call #t~ret5 := f(); {22#true} is VALID [2018-11-14 17:23:15,457 INFO L273 TraceCheckUtils]: 7: Hoare triple {22#true} call #t~mem0 := read~int(~p1~0.base, ~p1~0.offset, 4);call #t~mem1 := read~int(~p2~0.base, ~p2~0.offset, 4);call #t~mem2 := read~int(~#a~0.base, ~#a~0.offset, 4);~v~0 := #t~mem0 + #t~mem1 - #t~mem2;havoc #t~mem2;havoc #t~mem0;havoc #t~mem1; {22#true} is VALID [2018-11-14 17:23:15,459 INFO L273 TraceCheckUtils]: 8: Hoare triple {22#true} assume ~v~0 == 1;~p1~0.base, ~p1~0.offset := ~p2~0.base, ~p2~0.offset;#res := ~v~0; {24#(and (= ~p1~0.base ~p2~0.base) (<= 1 |f_#res|) (= ~p1~0.offset ~p2~0.offset))} is VALID [2018-11-14 17:23:15,462 INFO L273 TraceCheckUtils]: 9: Hoare triple {24#(and (= ~p1~0.base ~p2~0.base) (<= 1 |f_#res|) (= ~p1~0.offset ~p2~0.offset))} assume true; {24#(and (= ~p1~0.base ~p2~0.base) (<= 1 |f_#res|) (= ~p1~0.offset ~p2~0.offset))} is VALID [2018-11-14 17:23:15,464 INFO L268 TraceCheckUtils]: 10: Hoare quadruple {24#(and (= ~p1~0.base ~p2~0.base) (<= 1 |f_#res|) (= ~p1~0.offset ~p2~0.offset))} {22#true} #27#return; {25#(and (= ~p1~0.base ~p2~0.base) (not (= |main_#t~ret5| 0)) (= ~p1~0.offset ~p2~0.offset))} is VALID [2018-11-14 17:23:15,465 INFO L273 TraceCheckUtils]: 11: Hoare triple {25#(and (= ~p1~0.base ~p2~0.base) (not (= |main_#t~ret5| 0)) (= ~p1~0.offset ~p2~0.offset))} assume -2147483648 <= #t~ret5 && #t~ret5 <= 2147483647;call write~int(#t~ret5, ~#a~0.base, ~#a~0.offset, 4);havoc #t~ret5;call #t~mem6 := read~int(~#a~0.base, ~#a~0.offset, 4); {26#(and (not (= |main_#t~mem6| 0)) (= ~p1~0.base ~p2~0.base) (= ~p1~0.offset ~p2~0.offset))} is VALID [2018-11-14 17:23:15,466 INFO L273 TraceCheckUtils]: 12: Hoare triple {26#(and (not (= |main_#t~mem6| 0)) (= ~p1~0.base ~p2~0.base) (= ~p1~0.offset ~p2~0.offset))} assume #t~mem6 == 0 || ~p1~0.base != ~p2~0.base || ~p1~0.offset != ~p2~0.offset;havoc #t~mem6; {23#false} is VALID [2018-11-14 17:23:15,467 INFO L273 TraceCheckUtils]: 13: Hoare triple {23#false} assume !false; {23#false} is VALID [2018-11-14 17:23:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:23:15,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-14 17:23:15,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-14 17:23:15,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-14 17:23:15,483 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:23:15,487 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2018-11-14 17:23:15,541 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:23:15,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-14 17:23:15,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-14 17:23:15,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-14 17:23:15,554 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2018-11-14 17:23:16,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:23:16,046 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-11-14 17:23:16,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-14 17:23:16,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-14 17:23:16,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:23:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-14 17:23:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2018-11-14 17:23:16,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-14 17:23:16,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2018-11-14 17:23:16,068 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 30 transitions. [2018-11-14 17:23:16,177 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:23:16,187 INFO L225 Difference]: With dead ends: 29 [2018-11-14 17:23:16,188 INFO L226 Difference]: Without dead ends: 15 [2018-11-14 17:23:16,191 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-14 17:23:16,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-14 17:23:16,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-14 17:23:16,253 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:23:16,254 INFO L82 GeneralOperation]: Start isEquivalent. First operand 15 states. Second operand 15 states. [2018-11-14 17:23:16,254 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand 15 states. [2018-11-14 17:23:16,254 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 15 states. [2018-11-14 17:23:16,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:23:16,258 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2018-11-14 17:23:16,258 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2018-11-14 17:23:16,259 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:23:16,259 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:23:16,259 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand 15 states. [2018-11-14 17:23:16,259 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 15 states. [2018-11-14 17:23:16,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:23:16,262 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2018-11-14 17:23:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2018-11-14 17:23:16,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:23:16,263 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:23:16,263 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:23:16,264 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:23:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-14 17:23:16,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2018-11-14 17:23:16,268 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2018-11-14 17:23:16,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:23:16,268 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2018-11-14 17:23:16,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-14 17:23:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2018-11-14 17:23:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-14 17:23:16,269 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:23:16,269 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:23:16,270 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:23:16,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:23:16,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1918044370, now seen corresponding path program 1 times [2018-11-14 17:23:16,270 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:23:16,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:23:16,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:23:16,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:23:16,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:23:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:23:16,797 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-11-14 17:23:17,131 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2018-11-14 17:23:17,335 INFO L256 TraceCheckUtils]: 0: Hoare triple {118#true} call ULTIMATE.init(); {118#true} is VALID [2018-11-14 17:23:17,336 INFO L273 TraceCheckUtils]: 1: Hoare triple {118#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];call ~#a~0.base, ~#a~0.offset := #Ultimate.alloc(4);call write~unchecked~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.alloc(4);call write~unchecked~int(0, ~#b~0.base, ~#b~0.offset, 4);~p1~0.base, ~p1~0.offset := 0, 0;~p2~0.base, ~p2~0.offset := 0, 0; {120#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2018-11-14 17:23:17,339 INFO L273 TraceCheckUtils]: 2: Hoare triple {120#(not (= |~#b~0.base| |~#a~0.base|))} assume true; {120#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2018-11-14 17:23:17,340 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {120#(not (= |~#b~0.base| |~#a~0.base|))} {118#true} #23#return; {120#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2018-11-14 17:23:17,342 INFO L256 TraceCheckUtils]: 4: Hoare triple {120#(not (= |~#b~0.base| |~#a~0.base|))} call #t~ret7 := main(); {120#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2018-11-14 17:23:17,343 INFO L273 TraceCheckUtils]: 5: Hoare triple {120#(not (= |~#b~0.base| |~#a~0.base|))} ~p1~0.base, ~p1~0.offset := ~#a~0.base, ~#a~0.offset;~p2~0.base, ~p2~0.offset := ~#b~0.base, ~#b~0.offset;call write~int(1, ~#b~0.base, ~#b~0.offset, 4);call write~int(5, ~#a~0.base, ~#a~0.offset, 4);call #t~mem3 := read~int(~#a~0.base, ~#a~0.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~#a~0.base, ~#a~0.offset, 4);havoc #t~post4;havoc #t~mem3; {121#(and (= |~#a~0.offset| ~p1~0.offset) (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1) (= |~#a~0.base| ~p1~0.base))} is VALID [2018-11-14 17:23:17,344 INFO L256 TraceCheckUtils]: 6: Hoare triple {121#(and (= |~#a~0.offset| ~p1~0.offset) (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1) (= |~#a~0.base| ~p1~0.base))} call #t~ret5 := f(); {122#(and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|))} is VALID [2018-11-14 17:23:17,346 INFO L273 TraceCheckUtils]: 7: Hoare triple {122#(and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|))} call #t~mem0 := read~int(~p1~0.base, ~p1~0.offset, 4);call #t~mem1 := read~int(~p2~0.base, ~p2~0.offset, 4);call #t~mem2 := read~int(~#a~0.base, ~#a~0.offset, 4);~v~0 := #t~mem0 + #t~mem1 - #t~mem2;havoc #t~mem2;havoc #t~mem0;havoc #t~mem1; {123#(or (and (or (and (or (not (= ~p1~0.base |~#a~0.base|)) (= |old(~p1~0.offset)| ~p1~0.offset)) (or (= ~p1~0.base |~#a~0.base|) (= |old(~p1~0.base)| ~p1~0.base))) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| ~p1~0.base) ~p1~0.offset))) (or (and (<= (+ (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) (select (select |#memory_int| ~p1~0.base) ~p1~0.offset)) (+ (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) f_~v~0)) (<= f_~v~0 1)) (not (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| ~p1~0.base) ~p1~0.offset))))) (not (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1)))} is VALID [2018-11-14 17:23:17,347 INFO L273 TraceCheckUtils]: 8: Hoare triple {123#(or (and (or (and (or (not (= ~p1~0.base |~#a~0.base|)) (= |old(~p1~0.offset)| ~p1~0.offset)) (or (= ~p1~0.base |~#a~0.base|) (= |old(~p1~0.base)| ~p1~0.base))) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| ~p1~0.base) ~p1~0.offset))) (or (and (<= (+ (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) (select (select |#memory_int| ~p1~0.base) ~p1~0.offset)) (+ (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) f_~v~0)) (<= f_~v~0 1)) (not (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| ~p1~0.base) ~p1~0.offset))))) (not (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1)))} assume !(~v~0 == 1);#res := 0; {124#(or (and (or (<= (+ (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) 2) (+ (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) (select (select |#memory_int| ~p1~0.base) ~p1~0.offset))) (<= (+ (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) (select (select |#memory_int| ~p1~0.base) ~p1~0.offset)) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) (or (not (= ~p1~0.base |~#a~0.base|)) (= |old(~p1~0.offset)| ~p1~0.offset)) (or (= ~p1~0.base |~#a~0.base|) (= |old(~p1~0.base)| ~p1~0.base))) (not (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1)))} is VALID [2018-11-14 17:23:17,347 INFO L273 TraceCheckUtils]: 9: Hoare triple {124#(or (and (or (<= (+ (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) 2) (+ (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) (select (select |#memory_int| ~p1~0.base) ~p1~0.offset))) (<= (+ (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) (select (select |#memory_int| ~p1~0.base) ~p1~0.offset)) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) (or (not (= ~p1~0.base |~#a~0.base|)) (= |old(~p1~0.offset)| ~p1~0.offset)) (or (= ~p1~0.base |~#a~0.base|) (= |old(~p1~0.base)| ~p1~0.base))) (not (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1)))} assume true; {124#(or (and (or (<= (+ (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) 2) (+ (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) (select (select |#memory_int| ~p1~0.base) ~p1~0.offset))) (<= (+ (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) (select (select |#memory_int| ~p1~0.base) ~p1~0.offset)) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) (or (not (= ~p1~0.base |~#a~0.base|)) (= |old(~p1~0.offset)| ~p1~0.offset)) (or (= ~p1~0.base |~#a~0.base|) (= |old(~p1~0.base)| ~p1~0.base))) (not (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1)))} is VALID [2018-11-14 17:23:17,350 INFO L268 TraceCheckUtils]: 10: Hoare quadruple {124#(or (and (or (<= (+ (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) 2) (+ (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) (select (select |#memory_int| ~p1~0.base) ~p1~0.offset))) (<= (+ (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) (select (select |#memory_int| ~p1~0.base) ~p1~0.offset)) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) (or (not (= ~p1~0.base |~#a~0.base|)) (= |old(~p1~0.offset)| ~p1~0.offset)) (or (= ~p1~0.base |~#a~0.base|) (= |old(~p1~0.base)| ~p1~0.base))) (not (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1)))} {121#(and (= |~#a~0.offset| ~p1~0.offset) (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1) (= |~#a~0.base| ~p1~0.base))} #27#return; {119#false} is VALID [2018-11-14 17:23:17,350 INFO L273 TraceCheckUtils]: 11: Hoare triple {119#false} assume -2147483648 <= #t~ret5 && #t~ret5 <= 2147483647;call write~int(#t~ret5, ~#a~0.base, ~#a~0.offset, 4);havoc #t~ret5;call #t~mem6 := read~int(~#a~0.base, ~#a~0.offset, 4); {119#false} is VALID [2018-11-14 17:23:17,351 INFO L273 TraceCheckUtils]: 12: Hoare triple {119#false} assume #t~mem6 == 0 || ~p1~0.base != ~p2~0.base || ~p1~0.offset != ~p2~0.offset;havoc #t~mem6; {119#false} is VALID [2018-11-14 17:23:17,351 INFO L273 TraceCheckUtils]: 13: Hoare triple {119#false} assume !false; {119#false} is VALID [2018-11-14 17:23:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:23:17,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-14 17:23:17,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-14 17:23:17,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-14 17:23:17,357 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:23:17,357 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2018-11-14 17:23:17,405 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:23:17,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-14 17:23:17,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-14 17:23:17,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-14 17:23:17,407 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 7 states. [2018-11-14 17:23:17,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:23:17,747 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2018-11-14 17:23:17,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-14 17:23:17,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-14 17:23:17,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:23:17,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-14 17:23:17,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 14 transitions. [2018-11-14 17:23:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-14 17:23:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 14 transitions. [2018-11-14 17:23:17,753 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 14 transitions. [2018-11-14 17:23:17,772 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:23:17,772 INFO L225 Difference]: With dead ends: 15 [2018-11-14 17:23:17,772 INFO L226 Difference]: Without dead ends: 0 [2018-11-14 17:23:17,774 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-14 17:23:17,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-14 17:23:17,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-14 17:23:17,775 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:23:17,775 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2018-11-14 17:23:17,776 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2018-11-14 17:23:17,776 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2018-11-14 17:23:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:23:17,776 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-14 17:23:17,776 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-14 17:23:17,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:23:17,777 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:23:17,777 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2018-11-14 17:23:17,777 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2018-11-14 17:23:17,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:23:17,777 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-14 17:23:17,777 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-14 17:23:17,778 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:23:17,778 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:23:17,778 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:23:17,778 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:23:17,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-14 17:23:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-14 17:23:17,778 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-11-14 17:23:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:23:17,779 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-14 17:23:17,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-14 17:23:17,779 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-14 17:23:17,779 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:23:17,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-14 17:23:18,163 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 11 [2018-11-14 17:23:18,259 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-14 17:23:18,259 INFO L421 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2018-11-14 17:23:18,260 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-14 17:23:18,260 INFO L425 ceAbstractionStarter]: For program point L9(lines 9 14) no Hoare annotation was computed. [2018-11-14 17:23:18,260 INFO L425 ceAbstractionStarter]: For program point fEXIT(lines 7 15) no Hoare annotation was computed. [2018-11-14 17:23:18,260 INFO L421 ceAbstractionStarter]: At program point fENTRY(lines 7 15) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= 1 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset))) (and (= ~p1~0.offset |old(~p1~0.offset)|) (= |~#a~0.base| ~p1~0.base)) (not (= |~#a~0.offset| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |~#a~0.base|))) [2018-11-14 17:23:18,261 INFO L425 ceAbstractionStarter]: For program point fFINAL(lines 7 15) no Hoare annotation was computed. [2018-11-14 17:23:18,261 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-14 17:23:18,261 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (not (= |~#b~0.base| |~#a~0.base|)) [2018-11-14 17:23:18,261 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-14 17:23:18,261 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-14 17:23:18,261 INFO L421 ceAbstractionStarter]: At program point L30(lines 17 37) the Hoare annotation is: (= |~#a~0.base| |~#b~0.base|) [2018-11-14 17:23:18,262 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2018-11-14 17:23:18,262 INFO L421 ceAbstractionStarter]: At program point mainENTRY(lines 17 37) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|))) [2018-11-14 17:23:18,262 INFO L425 ceAbstractionStarter]: For program point L29(lines 29 31) no Hoare annotation was computed. [2018-11-14 17:23:18,262 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 17 37) no Hoare annotation was computed. [2018-11-14 17:23:18,262 INFO L421 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (and (= |~#a~0.offset| ~p1~0.offset) (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1) (= |~#a~0.base| ~p1~0.base))) [2018-11-14 17:23:18,262 INFO L425 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2018-11-14 17:23:18,262 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 17 37) no Hoare annotation was computed. [2018-11-14 17:23:18,264 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2018-11-14 17:23:18,264 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2018-11-14 17:23:18,266 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2018-11-14 17:23:18,266 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2018-11-14 17:23:18,266 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2018-11-14 17:23:18,266 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2018-11-14 17:23:18,267 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2018-11-14 17:23:18,268 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2018-11-14 17:23:18,268 WARN L170 areAnnotationChecker]: fFINAL has no Hoare annotation [2018-11-14 17:23:18,268 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2018-11-14 17:23:18,268 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2018-11-14 17:23:18,268 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2018-11-14 17:23:18,268 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2018-11-14 17:23:18,268 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2018-11-14 17:23:18,269 WARN L170 areAnnotationChecker]: mainErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2018-11-14 17:23:18,269 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2018-11-14 17:23:18,269 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2018-11-14 17:23:18,269 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2018-11-14 17:23:18,269 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. [2018-11-14 17:23:18,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:23:18 BoogieIcfgContainer [2018-11-14 17:23:18,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-14 17:23:18,279 INFO L168 Benchmark]: Toolchain (without parser) took 4689.07 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 722.5 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -551.8 MB). Peak memory consumption was 170.6 MB. Max. memory is 7.1 GB. [2018-11-14 17:23:18,280 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-14 17:23:18,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-14 17:23:18,282 INFO L168 Benchmark]: Boogie Preprocessor took 42.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-14 17:23:18,283 INFO L168 Benchmark]: RCFGBuilder took 669.82 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 722.5 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -768.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2018-11-14 17:23:18,284 INFO L168 Benchmark]: TraceAbstraction took 3646.77 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 206.1 MB). Peak memory consumption was 206.1 MB. Max. memory is 7.1 GB. [2018-11-14 17:23:18,288 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - GenericResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 325.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 669.82 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 722.5 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -768.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3646.77 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 206.1 MB). Peak memory consumption was 206.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: 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: 17]: Loop Invariant Derived loop invariant: a == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 3.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 3 SDslu, 39 SDs, 0 SdLazy, 39 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 71 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 25 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 3770 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...