/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/loop-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 12:47:31,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 12:47:31,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 12:47:31,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 12:47:31,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 12:47:31,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 12:47:31,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 12:47:31,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 12:47:31,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 12:47:31,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 12:47:31,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 12:47:31,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 12:47:31,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 12:47:31,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 12:47:31,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 12:47:31,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 12:47:31,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 12:47:31,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 12:47:31,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 12:47:31,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 12:47:31,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 12:47:31,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 12:47:31,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 12:47:31,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 12:47:31,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 12:47:31,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 12:47:31,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 12:47:31,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 12:47:31,820 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 [2020-07-08 12:47:31,837 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 12:47:31,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 12:47:31,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-08 12:47:31,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-08 12:47:31,839 INFO L138 SettingsManager]: * Use SBE=true [2020-07-08 12:47:31,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 12:47:31,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 12:47:31,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 12:47:31,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 12:47:31,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 12:47:31,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 12:47:31,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 12:47:31,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 12:47:31,841 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 12:47:31,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 12:47:31,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 12:47:31,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 12:47:31,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 12:47:31,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-08 12:47:31,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 12:47:31,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 12:47:31,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 12:47:31,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 12:47:31,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-08 12:47:31,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-08 12:47:31,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-08 12:47:31,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-08 12:47:31,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 12:47:31,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-08 12:47:31,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-08 12:47:32,169 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 12:47:32,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 12:47:32,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 12:47:32,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 12:47:32,201 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 12:47:32,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-07-08 12:47:32,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/892ce11c9/ba8b1c0490964ec1a43699fdf2edc76a/FLAGa78605480 [2020-07-08 12:47:32,890 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 12:47:32,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-07-08 12:47:32,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/892ce11c9/ba8b1c0490964ec1a43699fdf2edc76a/FLAGa78605480 [2020-07-08 12:47:33,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/892ce11c9/ba8b1c0490964ec1a43699fdf2edc76a [2020-07-08 12:47:33,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 12:47:33,254 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 12:47:33,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 12:47:33,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 12:47:33,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 12:47:33,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:47:33" (1/1) ... [2020-07-08 12:47:33,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:33, skipping insertion in model container [2020-07-08 12:47:33,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:47:33" (1/1) ... [2020-07-08 12:47:33,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 12:47:33,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 12:47:33,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:47:33,546 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 12:47:33,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:47:33,581 INFO L208 MainTranslator]: Completed translation [2020-07-08 12:47:33,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:33 WrapperNode [2020-07-08 12:47:33,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 12:47:33,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 12:47:33,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 12:47:33,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 12:47:33,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:33" (1/1) ... [2020-07-08 12:47:33,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:33" (1/1) ... [2020-07-08 12:47:33,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:33" (1/1) ... [2020-07-08 12:47:33,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:33" (1/1) ... [2020-07-08 12:47:33,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:33" (1/1) ... [2020-07-08 12:47:33,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:33" (1/1) ... [2020-07-08 12:47:33,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:33" (1/1) ... [2020-07-08 12:47:33,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 12:47:33,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 12:47:33,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 12:47:33,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 12:47:33,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:33" (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 [2020-07-08 12:47:33,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 12:47:33,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 12:47:33,797 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-08 12:47:33,797 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 12:47:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 12:47:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-08 12:47:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-08 12:47:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 12:47:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 12:47:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 12:47:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 12:47:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 12:47:34,123 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 12:47:34,124 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-08 12:47:34,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:47:34 BoogieIcfgContainer [2020-07-08 12:47:34,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 12:47:34,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 12:47:34,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 12:47:34,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 12:47:34,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 12:47:33" (1/3) ... [2020-07-08 12:47:34,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25966780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:47:34, skipping insertion in model container [2020-07-08 12:47:34,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:33" (2/3) ... [2020-07-08 12:47:34,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25966780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:47:34, skipping insertion in model container [2020-07-08 12:47:34,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:47:34" (3/3) ... [2020-07-08 12:47:34,143 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2020-07-08 12:47:34,158 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-08 12:47:34,167 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 12:47:34,191 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 12:47:34,248 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 12:47:34,249 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 12:47:34,249 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-08 12:47:34,249 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 12:47:34,250 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 12:47:34,250 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 12:47:34,250 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 12:47:34,250 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 12:47:34,271 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-08 12:47:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-08 12:47:34,278 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:47:34,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:47:34,280 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:47:34,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:47:34,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1434042835, now seen corresponding path program 1 times [2020-07-08 12:47:34,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:47:34,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337363641] [2020-07-08 12:47:34,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:47:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:34,979 INFO L280 TraceCheckUtils]: 0: Hoare triple {28#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|))} ~__return_main~0 := 0;~__return_72~0 := 0; {20#true} is VALID [2020-07-08 12:47:34,980 INFO L280 TraceCheckUtils]: 1: Hoare triple {20#true} assume true; {20#true} is VALID [2020-07-08 12:47:34,983 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {20#true} {20#true} #40#return; {20#true} is VALID [2020-07-08 12:47:34,988 INFO L263 TraceCheckUtils]: 0: Hoare triple {20#true} call ULTIMATE.init(); {28#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|))} is VALID [2020-07-08 12:47:34,989 INFO L280 TraceCheckUtils]: 1: Hoare triple {28#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|))} ~__return_main~0 := 0;~__return_72~0 := 0; {20#true} is VALID [2020-07-08 12:47:34,989 INFO L280 TraceCheckUtils]: 2: Hoare triple {20#true} assume true; {20#true} is VALID [2020-07-08 12:47:34,990 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {20#true} {20#true} #40#return; {20#true} is VALID [2020-07-08 12:47:34,990 INFO L263 TraceCheckUtils]: 4: Hoare triple {20#true} call #t~ret2 := main(); {20#true} is VALID [2020-07-08 12:47:34,991 INFO L280 TraceCheckUtils]: 5: Hoare triple {20#true} havoc ~main__i~0;havoc ~main__j~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~main__i~0 := #t~nondet0;havoc #t~nondet0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__j~0 := #t~nondet1;havoc #t~nondet1; {20#true} is VALID [2020-07-08 12:47:34,991 INFO L280 TraceCheckUtils]: 6: Hoare triple {20#true} assume !!(~main__i~0 >= 0); {20#true} is VALID [2020-07-08 12:47:34,994 INFO L280 TraceCheckUtils]: 7: Hoare triple {20#true} assume !!(~main__j~0 >= 0);~main__x~0 := ~main__i~0;~main__y~0 := ~main__j~0; {25#(and (or (<= main_~main__y~0 0) (<= (+ main_~main__y~0 main_~main__i~0) (+ main_~main__j~0 main_~main__x~0))) (or (< 0 (+ main_~main__y~0 1)) (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__y~0 main_~main__i~0))))} is VALID [2020-07-08 12:47:34,997 INFO L280 TraceCheckUtils]: 8: Hoare triple {25#(and (or (<= main_~main__y~0 0) (<= (+ main_~main__y~0 main_~main__i~0) (+ main_~main__j~0 main_~main__x~0))) (or (< 0 (+ main_~main__y~0 1)) (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__y~0 main_~main__i~0))))} assume !(0 != ~main__x~0); {26#(and (or (<= main_~main__j~0 (+ main_~main__y~0 main_~main__i~0)) (< 0 (+ main_~main__y~0 1))) (or (<= (+ main_~main__y~0 main_~main__i~0) main_~main__j~0) (<= main_~main__y~0 0)))} is VALID [2020-07-08 12:47:35,000 INFO L280 TraceCheckUtils]: 9: Hoare triple {26#(and (or (<= main_~main__j~0 (+ main_~main__y~0 main_~main__i~0)) (< 0 (+ main_~main__y~0 1))) (or (<= (+ main_~main__y~0 main_~main__i~0) main_~main__j~0) (<= main_~main__y~0 0)))} assume ~main__i~0 == ~main__j~0;havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 == ~main__y~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {27#(not (= 0 main_~__VERIFIER_assert__cond~0))} is VALID [2020-07-08 12:47:35,001 INFO L280 TraceCheckUtils]: 10: Hoare triple {27#(not (= 0 main_~__VERIFIER_assert__cond~0))} assume 0 == ~__VERIFIER_assert__cond~0; {21#false} is VALID [2020-07-08 12:47:35,002 INFO L280 TraceCheckUtils]: 11: Hoare triple {21#false} assume !false; {21#false} is VALID [2020-07-08 12:47:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 12:47:35,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337363641] [2020-07-08 12:47:35,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:47:35,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-08 12:47:35,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84558267] [2020-07-08 12:47:35,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-07-08 12:47:35,033 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:47:35,038 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-08 12:47:35,080 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:47:35,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-08 12:47:35,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:47:35,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-08 12:47:35,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-08 12:47:35,097 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-07-08 12:47:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:35,855 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-07-08 12:47:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-08 12:47:35,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-07-08 12:47:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:47:35,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 12:47:35,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 38 transitions. [2020-07-08 12:47:35,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 12:47:35,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 38 transitions. [2020-07-08 12:47:35,879 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 38 transitions. [2020-07-08 12:47:35,959 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:47:35,971 INFO L225 Difference]: With dead ends: 32 [2020-07-08 12:47:35,972 INFO L226 Difference]: Without dead ends: 14 [2020-07-08 12:47:35,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-08 12:47:35,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-08 12:47:36,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-08 12:47:36,030 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:47:36,031 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand 14 states. [2020-07-08 12:47:36,032 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-08 12:47:36,033 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-08 12:47:36,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:36,036 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-07-08 12:47:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-08 12:47:36,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:36,037 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:47:36,037 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-08 12:47:36,038 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-08 12:47:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:36,042 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-07-08 12:47:36,042 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-08 12:47:36,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:36,042 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:47:36,043 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:47:36,043 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:47:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-08 12:47:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-08 12:47:36,047 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-08 12:47:36,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:47:36,048 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-08 12:47:36,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-08 12:47:36,048 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-08 12:47:36,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-08 12:47:36,049 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:47:36,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:47:36,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 12:47:36,050 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:47:36,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:47:36,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1507594220, now seen corresponding path program 1 times [2020-07-08 12:47:36,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:47:36,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386686477] [2020-07-08 12:47:36,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:47:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:36,263 INFO L280 TraceCheckUtils]: 0: Hoare triple {134#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|))} ~__return_main~0 := 0;~__return_72~0 := 0; {125#true} is VALID [2020-07-08 12:47:36,264 INFO L280 TraceCheckUtils]: 1: Hoare triple {125#true} assume true; {125#true} is VALID [2020-07-08 12:47:36,264 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {125#true} {125#true} #40#return; {125#true} is VALID [2020-07-08 12:47:36,266 INFO L263 TraceCheckUtils]: 0: Hoare triple {125#true} call ULTIMATE.init(); {134#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|))} is VALID [2020-07-08 12:47:36,267 INFO L280 TraceCheckUtils]: 1: Hoare triple {134#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|))} ~__return_main~0 := 0;~__return_72~0 := 0; {125#true} is VALID [2020-07-08 12:47:36,267 INFO L280 TraceCheckUtils]: 2: Hoare triple {125#true} assume true; {125#true} is VALID [2020-07-08 12:47:36,268 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {125#true} {125#true} #40#return; {125#true} is VALID [2020-07-08 12:47:36,268 INFO L263 TraceCheckUtils]: 4: Hoare triple {125#true} call #t~ret2 := main(); {125#true} is VALID [2020-07-08 12:47:36,268 INFO L280 TraceCheckUtils]: 5: Hoare triple {125#true} havoc ~main__i~0;havoc ~main__j~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~main__i~0 := #t~nondet0;havoc #t~nondet0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__j~0 := #t~nondet1;havoc #t~nondet1; {125#true} is VALID [2020-07-08 12:47:36,269 INFO L280 TraceCheckUtils]: 6: Hoare triple {125#true} assume !!(~main__i~0 >= 0); {125#true} is VALID [2020-07-08 12:47:36,270 INFO L280 TraceCheckUtils]: 7: Hoare triple {125#true} assume !!(~main__j~0 >= 0);~main__x~0 := ~main__i~0;~main__y~0 := ~main__j~0; {130#(and (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__y~0 main_~main__i~0)) (<= (+ main_~main__y~0 main_~main__i~0) (+ main_~main__j~0 main_~main__x~0)))} is VALID [2020-07-08 12:47:36,272 INFO L280 TraceCheckUtils]: 8: Hoare triple {130#(and (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__y~0 main_~main__i~0)) (<= (+ main_~main__y~0 main_~main__i~0) (+ main_~main__j~0 main_~main__x~0)))} assume 0 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~main__x~0 - 1;~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~main__y~0 - 1; {131#(and (or (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__i~0 main_~main__y~0)) (< 0 (+ main_~main__y~0 1))) (or (<= main_~main__y~0 0) (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0))))} is VALID [2020-07-08 12:47:36,275 INFO L280 TraceCheckUtils]: 9: Hoare triple {131#(and (or (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__i~0 main_~main__y~0)) (< 0 (+ main_~main__y~0 1))) (or (<= main_~main__y~0 0) (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0))))} assume !(0 != ~main__x~0); {132#(and (or (<= main_~main__j~0 (+ main_~main__i~0 main_~main__y~0)) (< 0 (+ main_~main__y~0 1))) (or (<= main_~main__y~0 0) (<= (+ main_~main__i~0 main_~main__y~0) main_~main__j~0)))} is VALID [2020-07-08 12:47:36,277 INFO L280 TraceCheckUtils]: 10: Hoare triple {132#(and (or (<= main_~main__j~0 (+ main_~main__i~0 main_~main__y~0)) (< 0 (+ main_~main__y~0 1))) (or (<= main_~main__y~0 0) (<= (+ main_~main__i~0 main_~main__y~0) main_~main__j~0)))} assume ~main__i~0 == ~main__j~0;havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 == ~main__y~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {133#(not (= 0 main_~__VERIFIER_assert__cond~0))} is VALID [2020-07-08 12:47:36,279 INFO L280 TraceCheckUtils]: 11: Hoare triple {133#(not (= 0 main_~__VERIFIER_assert__cond~0))} assume 0 == ~__VERIFIER_assert__cond~0; {126#false} is VALID [2020-07-08 12:47:36,279 INFO L280 TraceCheckUtils]: 12: Hoare triple {126#false} assume !false; {126#false} is VALID [2020-07-08 12:47:36,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 12:47:36,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386686477] [2020-07-08 12:47:36,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748770515] [2020-07-08 12:47:36,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-08 12:47:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:36,325 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-08 12:47:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:36,340 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-08 12:47:36,514 INFO L263 TraceCheckUtils]: 0: Hoare triple {125#true} call ULTIMATE.init(); {125#true} is VALID [2020-07-08 12:47:36,514 INFO L280 TraceCheckUtils]: 1: Hoare triple {125#true} ~__return_main~0 := 0;~__return_72~0 := 0; {125#true} is VALID [2020-07-08 12:47:36,514 INFO L280 TraceCheckUtils]: 2: Hoare triple {125#true} assume true; {125#true} is VALID [2020-07-08 12:47:36,515 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {125#true} {125#true} #40#return; {125#true} is VALID [2020-07-08 12:47:36,515 INFO L263 TraceCheckUtils]: 4: Hoare triple {125#true} call #t~ret2 := main(); {125#true} is VALID [2020-07-08 12:47:36,516 INFO L280 TraceCheckUtils]: 5: Hoare triple {125#true} havoc ~main__i~0;havoc ~main__j~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~main__i~0 := #t~nondet0;havoc #t~nondet0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__j~0 := #t~nondet1;havoc #t~nondet1; {125#true} is VALID [2020-07-08 12:47:36,516 INFO L280 TraceCheckUtils]: 6: Hoare triple {125#true} assume !!(~main__i~0 >= 0); {125#true} is VALID [2020-07-08 12:47:36,518 INFO L280 TraceCheckUtils]: 7: Hoare triple {125#true} assume !!(~main__j~0 >= 0);~main__x~0 := ~main__i~0;~main__y~0 := ~main__j~0; {159#(and (= main_~main__j~0 main_~main__y~0) (= main_~main__i~0 main_~main__x~0))} is VALID [2020-07-08 12:47:36,519 INFO L280 TraceCheckUtils]: 8: Hoare triple {159#(and (= main_~main__j~0 main_~main__y~0) (= main_~main__i~0 main_~main__x~0))} assume 0 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~main__x~0 - 1;~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~main__y~0 - 1; {163#(and (= main_~main__i~0 (+ main_~main__x~0 1)) (= (+ main_~main__y~0 1) main_~main__j~0))} is VALID [2020-07-08 12:47:36,521 INFO L280 TraceCheckUtils]: 9: Hoare triple {163#(and (= main_~main__i~0 (+ main_~main__x~0 1)) (= (+ main_~main__y~0 1) main_~main__j~0))} assume !(0 != ~main__x~0); {167#(and (= 1 main_~main__i~0) (= (+ main_~main__y~0 1) main_~main__j~0))} is VALID [2020-07-08 12:47:36,522 INFO L280 TraceCheckUtils]: 10: Hoare triple {167#(and (= 1 main_~main__i~0) (= (+ main_~main__y~0 1) main_~main__j~0))} assume ~main__i~0 == ~main__j~0;havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 == ~main__y~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {171#(<= 1 main_~__VERIFIER_assert__cond~0)} is VALID [2020-07-08 12:47:36,524 INFO L280 TraceCheckUtils]: 11: Hoare triple {171#(<= 1 main_~__VERIFIER_assert__cond~0)} assume 0 == ~__VERIFIER_assert__cond~0; {126#false} is VALID [2020-07-08 12:47:36,524 INFO L280 TraceCheckUtils]: 12: Hoare triple {126#false} assume !false; {126#false} is VALID [2020-07-08 12:47:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 12:47:36,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-08 12:47:36,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-07-08 12:47:36,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173885732] [2020-07-08 12:47:36,529 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-07-08 12:47:36,530 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:47:36,530 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 11 states. [2020-07-08 12:47:36,563 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:47:36,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-08 12:47:36,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:47:36,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-08 12:47:36,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-07-08 12:47:36,565 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2020-07-08 12:47:37,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:37,107 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-07-08 12:47:37,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-08 12:47:37,107 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-07-08 12:47:37,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:47:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-08 12:47:37,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2020-07-08 12:47:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-08 12:47:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2020-07-08 12:47:37,112 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states and 18 transitions. [2020-07-08 12:47:37,150 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:47:37,151 INFO L225 Difference]: With dead ends: 17 [2020-07-08 12:47:37,151 INFO L226 Difference]: Without dead ends: 0 [2020-07-08 12:47:37,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-07-08 12:47:37,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-08 12:47:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-08 12:47:37,154 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:47:37,154 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-08 12:47:37,154 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 12:47:37,154 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 12:47:37,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:37,155 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 12:47:37,155 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 12:47:37,155 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:37,156 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:47:37,156 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 12:47:37,156 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 12:47:37,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:37,157 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 12:47:37,157 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 12:47:37,157 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:37,157 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:47:37,157 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:47:37,158 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:47:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-08 12:47:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-08 12:47:37,158 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-08 12:47:37,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:47:37,159 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-08 12:47:37,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-08 12:47:37,159 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 12:47:37,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:37,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-08 12:47:37,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-08 12:47:37,488 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-08 12:47:37,489 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|)) [2020-07-08 12:47:37,489 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-08 12:47:37,489 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-08 12:47:37,489 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-08 12:47:37,490 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-08 12:47:37,490 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-08 12:47:37,490 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-08 12:47:37,490 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-08 12:47:37,490 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-08 12:47:37,490 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-08 12:47:37,491 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 51) no Hoare annotation was computed. [2020-07-08 12:47:37,491 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 68) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-08 12:47:37,491 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 68) no Hoare annotation was computed. [2020-07-08 12:47:37,491 INFO L268 CegarLoopResult]: For program point L23(lines 23 66) no Hoare annotation was computed. [2020-07-08 12:47:37,491 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-07-08 12:47:37,492 INFO L268 CegarLoopResult]: For program point L17(lines 17 67) no Hoare annotation was computed. [2020-07-08 12:47:37,492 INFO L268 CegarLoopResult]: For program point L49(lines 49 58) no Hoare annotation was computed. [2020-07-08 12:47:37,492 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 68) no Hoare annotation was computed. [2020-07-08 12:47:37,492 INFO L268 CegarLoopResult]: For program point L42(lines 42 64) no Hoare annotation was computed. [2020-07-08 12:47:37,493 INFO L264 CegarLoopResult]: At program point L38(lines 28 66) the Hoare annotation is: (let ((.cse1 (+ main_~main__y~0 main_~main__i~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (= |old(~__return_72~0)| ~__return_72~0))) [2020-07-08 12:47:37,499 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-08 12:47:37,500 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-08 12:47:37,500 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-08 12:47:37,501 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-08 12:47:37,501 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 12:47:37,502 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 12:47:37,503 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 12:47:37,503 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-08 12:47:37,503 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-08 12:47:37,503 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-08 12:47:37,503 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 12:47:37,504 WARN L170 areAnnotationChecker]: L5-2 has no Hoare annotation [2020-07-08 12:47:37,504 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-08 12:47:37,504 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-08 12:47:37,504 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-08 12:47:37,504 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-08 12:47:37,506 WARN L170 areAnnotationChecker]: L42 has no Hoare annotation [2020-07-08 12:47:37,507 WARN L170 areAnnotationChecker]: L42 has no Hoare annotation [2020-07-08 12:47:37,507 WARN L170 areAnnotationChecker]: L42 has no Hoare annotation [2020-07-08 12:47:37,507 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-08 12:47:37,507 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-08 12:47:37,507 WARN L170 areAnnotationChecker]: L51 has no Hoare annotation [2020-07-08 12:47:37,507 WARN L170 areAnnotationChecker]: L51 has no Hoare annotation [2020-07-08 12:47:37,508 INFO L163 areAnnotationChecker]: CFG has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-08 12:47:37,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 12:47:37 BoogieIcfgContainer [2020-07-08 12:47:37,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 12:47:37,527 INFO L168 Benchmark]: Toolchain (without parser) took 4272.95 ms. Allocated memory was 141.6 MB in the beginning and 256.9 MB in the end (delta: 115.3 MB). Free memory was 99.2 MB in the beginning and 190.7 MB in the end (delta: -91.5 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-07-08 12:47:37,528 INFO L168 Benchmark]: CDTParser took 1.98 ms. Allocated memory is still 141.6 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-08 12:47:37,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.17 ms. Allocated memory is still 141.6 MB. Free memory was 99.0 MB in the beginning and 88.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-08 12:47:37,530 INFO L168 Benchmark]: Boogie Preprocessor took 132.45 ms. Allocated memory was 141.6 MB in the beginning and 199.8 MB in the end (delta: 58.2 MB). Free memory was 88.9 MB in the beginning and 178.3 MB in the end (delta: -89.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-08 12:47:37,531 INFO L168 Benchmark]: RCFGBuilder took 414.24 ms. Allocated memory is still 199.8 MB. Free memory was 178.3 MB in the beginning and 161.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-07-08 12:47:37,533 INFO L168 Benchmark]: TraceAbstraction took 3391.59 ms. Allocated memory was 199.8 MB in the beginning and 256.9 MB in the end (delta: 57.1 MB). Free memory was 160.7 MB in the beginning and 190.7 MB in the end (delta: -30.0 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-07-08 12:47:37,537 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 1.98 ms. Allocated memory is still 141.6 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 327.17 ms. Allocated memory is still 141.6 MB. Free memory was 99.0 MB in the beginning and 88.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.45 ms. Allocated memory was 141.6 MB in the beginning and 199.8 MB in the end (delta: 58.2 MB). Free memory was 88.9 MB in the beginning and 178.3 MB in the end (delta: -89.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 414.24 ms. Allocated memory is still 199.8 MB. Free memory was 178.3 MB in the beginning and 161.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3391.59 ms. Allocated memory was 199.8 MB in the beginning and 256.9 MB in the end (delta: 57.1 MB). Free memory was 160.7 MB in the beginning and 190.7 MB in the end (delta: -30.0 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: 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: 28]: Loop Invariant Derived loop invariant: (main__j + main__x <= main__y + main__i && main__y + main__i <= main__j + main__x) && \old(__return_72) == __return_72 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 42 SDslu, 55 SDs, 0 SdLazy, 80 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 30 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 62 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 2108 SizeOfPredicates, 6 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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...