/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/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 12:47:26,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 12:47:26,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 12:47:26,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 12:47:26,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 12:47:26,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 12:47:26,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 12:47:26,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 12:47:26,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 12:47:26,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 12:47:26,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 12:47:26,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 12:47:26,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 12:47:26,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 12:47:26,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 12:47:26,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 12:47:26,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 12:47:26,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 12:47:26,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 12:47:26,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 12:47:26,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 12:47:26,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 12:47:26,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 12:47:26,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 12:47:26,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 12:47:26,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 12:47:26,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 12:47:26,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 12:47:26,293 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 12:47:26,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 12:47:26,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 12:47:26,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-08 12:47:26,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-08 12:47:26,334 INFO L138 SettingsManager]: * Use SBE=true [2020-07-08 12:47:26,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 12:47:26,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 12:47:26,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 12:47:26,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 12:47:26,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 12:47:26,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 12:47:26,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 12:47:26,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 12:47:26,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 12:47:26,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 12:47:26,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 12:47:26,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 12:47:26,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 12:47:26,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-08 12:47:26,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 12:47:26,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 12:47:26,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 12:47:26,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 12:47:26,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-08 12:47:26,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-08 12:47:26,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-08 12:47:26,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-08 12:47:26,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 12:47:26,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-08 12:47:26,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-08 12:47:26,679 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 12:47:26,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 12:47:26,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 12:47:26,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 12:47:26,711 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 12:47:26,712 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2020-07-08 12:47:26,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c94d0097e/cd8ef38fa04144fdb163afa9d1dcfd52/FLAG6f9c1395b [2020-07-08 12:47:27,345 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 12:47:27,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b.i [2020-07-08 12:47:27,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c94d0097e/cd8ef38fa04144fdb163afa9d1dcfd52/FLAG6f9c1395b [2020-07-08 12:47:27,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c94d0097e/cd8ef38fa04144fdb163afa9d1dcfd52 [2020-07-08 12:47:27,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 12:47:27,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 12:47:27,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 12:47:27,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 12:47:27,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 12:47:27,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:47:27" (1/1) ... [2020-07-08 12:47:27,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc06059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:27, skipping insertion in model container [2020-07-08 12:47:27,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:47:27" (1/1) ... [2020-07-08 12:47:27,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 12:47:27,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 12:47:27,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:47:27,963 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 12:47:27,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:47:28,002 INFO L208 MainTranslator]: Completed translation [2020-07-08 12:47:28,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:28 WrapperNode [2020-07-08 12:47:28,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 12:47:28,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 12:47:28,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 12:47:28,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 12:47:28,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:28" (1/1) ... [2020-07-08 12:47:28,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:28" (1/1) ... [2020-07-08 12:47:28,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:28" (1/1) ... [2020-07-08 12:47:28,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:28" (1/1) ... [2020-07-08 12:47:28,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:28" (1/1) ... [2020-07-08 12:47:28,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:28" (1/1) ... [2020-07-08 12:47:28,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:28" (1/1) ... [2020-07-08 12:47:28,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 12:47:28,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 12:47:28,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 12:47:28,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 12:47:28,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:28" (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 12:47:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 12:47:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 12:47:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-08 12:47:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 12:47:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 12:47:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 12:47:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-08 12:47:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-08 12:47:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 12:47:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 12:47:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 12:47:28,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 12:47:28,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 12:47:28,552 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 12:47:28,552 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-08 12:47:28,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:47:28 BoogieIcfgContainer [2020-07-08 12:47:28,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 12:47:28,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 12:47:28,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 12:47:28,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 12:47:28,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 12:47:27" (1/3) ... [2020-07-08 12:47:28,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4591e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:47:28, skipping insertion in model container [2020-07-08 12:47:28,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:47:28" (2/3) ... [2020-07-08 12:47:28,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4591e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:47:28, skipping insertion in model container [2020-07-08 12:47:28,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:47:28" (3/3) ... [2020-07-08 12:47:28,568 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2020-07-08 12:47:28,581 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-08 12:47:28,589 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 12:47:28,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 12:47:28,629 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 12:47:28,630 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 12:47:28,630 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-08 12:47:28,630 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 12:47:28,631 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 12:47:28,631 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 12:47:28,631 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 12:47:28,631 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 12:47:28,652 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-08 12:47:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-08 12:47:28,659 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:47:28,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:47:28,661 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:47:28,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:47:28,668 INFO L82 PathProgramCache]: Analyzing trace with hash 508025261, now seen corresponding path program 1 times [2020-07-08 12:47:28,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:47:28,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609248239] [2020-07-08 12:47:28,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:47:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:28,919 INFO L280 TraceCheckUtils]: 0: Hoare triple {24#true} assume true; {24#true} is VALID [2020-07-08 12:47:28,920 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {24#true} {24#true} #48#return; {24#true} is VALID [2020-07-08 12:47:28,922 INFO L263 TraceCheckUtils]: 0: Hoare triple {24#true} call ULTIMATE.init(); {24#true} is VALID [2020-07-08 12:47:28,923 INFO L280 TraceCheckUtils]: 1: Hoare triple {24#true} assume true; {24#true} is VALID [2020-07-08 12:47:28,924 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {24#true} {24#true} #48#return; {24#true} is VALID [2020-07-08 12:47:28,925 INFO L263 TraceCheckUtils]: 3: Hoare triple {24#true} call #t~ret2 := main(); {24#true} is VALID [2020-07-08 12:47:28,929 INFO L280 TraceCheckUtils]: 4: Hoare triple {24#true} ~x~0 := 0;~m~0 := 0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~n~0 := #t~nondet0;havoc #t~nondet0; {28#(<= 0 main_~m~0)} is VALID [2020-07-08 12:47:28,930 INFO L280 TraceCheckUtils]: 5: Hoare triple {28#(<= 0 main_~m~0)} assume !(~x~0 < ~n~0); {28#(<= 0 main_~m~0)} is VALID [2020-07-08 12:47:28,933 INFO L263 TraceCheckUtils]: 6: Hoare triple {28#(<= 0 main_~m~0)} call __VERIFIER_assert((if ~m~0 >= 0 || ~n~0 <= 0 then 1 else 0)); {29#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 12:47:28,935 INFO L280 TraceCheckUtils]: 7: Hoare triple {29#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {30#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 12:47:28,936 INFO L280 TraceCheckUtils]: 8: Hoare triple {30#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {25#false} is VALID [2020-07-08 12:47:28,937 INFO L280 TraceCheckUtils]: 9: Hoare triple {25#false} assume !false; {25#false} is VALID [2020-07-08 12:47:28,938 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 12:47:28,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609248239] [2020-07-08 12:47:28,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:47:28,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-08 12:47:28,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686507992] [2020-07-08 12:47:28,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-08 12:47:28,955 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:47:28,958 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-08 12:47:28,994 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:47:28,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-08 12:47:28,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:47:29,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-08 12:47:29,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-08 12:47:29,012 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-07-08 12:47:29,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:29,290 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2020-07-08 12:47:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-08 12:47:29,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-08 12:47:29,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:47:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 12:47:29,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2020-07-08 12:47:29,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 12:47:29,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2020-07-08 12:47:29,312 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 60 transitions. [2020-07-08 12:47:29,428 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 60 edges. 60 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:47:29,440 INFO L225 Difference]: With dead ends: 46 [2020-07-08 12:47:29,441 INFO L226 Difference]: Without dead ends: 25 [2020-07-08 12:47:29,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-08 12:47:29,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-08 12:47:29,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-07-08 12:47:29,499 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:47:29,499 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand 24 states. [2020-07-08 12:47:29,500 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand 24 states. [2020-07-08 12:47:29,500 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 24 states. [2020-07-08 12:47:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:29,507 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-07-08 12:47:29,507 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-07-08 12:47:29,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:29,508 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:47:29,509 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 25 states. [2020-07-08 12:47:29,509 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 25 states. [2020-07-08 12:47:29,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:29,514 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-07-08 12:47:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-07-08 12:47:29,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:29,516 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:47:29,516 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:47:29,516 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:47:29,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-08 12:47:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-07-08 12:47:29,522 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 10 [2020-07-08 12:47:29,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:47:29,522 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-07-08 12:47:29,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-08 12:47:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-07-08 12:47:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-08 12:47:29,524 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:47:29,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:47:29,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 12:47:29,525 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:47:29,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:47:29,526 INFO L82 PathProgramCache]: Analyzing trace with hash -133512762, now seen corresponding path program 1 times [2020-07-08 12:47:29,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:47:29,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335726385] [2020-07-08 12:47:29,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:47:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:29,632 INFO L280 TraceCheckUtils]: 0: Hoare triple {181#true} assume true; {181#true} is VALID [2020-07-08 12:47:29,633 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {181#true} {181#true} #48#return; {181#true} is VALID [2020-07-08 12:47:29,633 INFO L263 TraceCheckUtils]: 0: Hoare triple {181#true} call ULTIMATE.init(); {181#true} is VALID [2020-07-08 12:47:29,634 INFO L280 TraceCheckUtils]: 1: Hoare triple {181#true} assume true; {181#true} is VALID [2020-07-08 12:47:29,634 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {181#true} {181#true} #48#return; {181#true} is VALID [2020-07-08 12:47:29,634 INFO L263 TraceCheckUtils]: 3: Hoare triple {181#true} call #t~ret2 := main(); {181#true} is VALID [2020-07-08 12:47:29,636 INFO L280 TraceCheckUtils]: 4: Hoare triple {181#true} ~x~0 := 0;~m~0 := 0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~n~0 := #t~nondet0;havoc #t~nondet0; {185#(<= 0 main_~x~0)} is VALID [2020-07-08 12:47:29,637 INFO L280 TraceCheckUtils]: 5: Hoare triple {185#(<= 0 main_~x~0)} assume !!(~x~0 < ~n~0);assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {185#(<= 0 main_~x~0)} is VALID [2020-07-08 12:47:29,638 INFO L280 TraceCheckUtils]: 6: Hoare triple {185#(<= 0 main_~x~0)} assume 0 != #t~nondet1;havoc #t~nondet1;~m~0 := ~x~0; {186#(<= 0 main_~m~0)} is VALID [2020-07-08 12:47:29,639 INFO L280 TraceCheckUtils]: 7: Hoare triple {186#(<= 0 main_~m~0)} ~x~0 := 1 + ~x~0; {186#(<= 0 main_~m~0)} is VALID [2020-07-08 12:47:29,641 INFO L280 TraceCheckUtils]: 8: Hoare triple {186#(<= 0 main_~m~0)} assume !(~x~0 < ~n~0); {186#(<= 0 main_~m~0)} is VALID [2020-07-08 12:47:29,643 INFO L263 TraceCheckUtils]: 9: Hoare triple {186#(<= 0 main_~m~0)} call __VERIFIER_assert((if ~m~0 >= 0 || ~n~0 <= 0 then 1 else 0)); {187#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 12:47:29,644 INFO L280 TraceCheckUtils]: 10: Hoare triple {187#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {188#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 12:47:29,645 INFO L280 TraceCheckUtils]: 11: Hoare triple {188#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {182#false} is VALID [2020-07-08 12:47:29,646 INFO L280 TraceCheckUtils]: 12: Hoare triple {182#false} assume !false; {182#false} is VALID [2020-07-08 12:47:29,668 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 12:47:29,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335726385] [2020-07-08 12:47:29,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018819436] [2020-07-08 12:47:29,669 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 12:47:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:29,706 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-08 12:47:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:29,718 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-08 12:47:29,805 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-08 12:47:29,855 INFO L263 TraceCheckUtils]: 0: Hoare triple {181#true} call ULTIMATE.init(); {181#true} is VALID [2020-07-08 12:47:29,855 INFO L280 TraceCheckUtils]: 1: Hoare triple {181#true} assume true; {181#true} is VALID [2020-07-08 12:47:29,856 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {181#true} {181#true} #48#return; {181#true} is VALID [2020-07-08 12:47:29,856 INFO L263 TraceCheckUtils]: 3: Hoare triple {181#true} call #t~ret2 := main(); {181#true} is VALID [2020-07-08 12:47:29,857 INFO L280 TraceCheckUtils]: 4: Hoare triple {181#true} ~x~0 := 0;~m~0 := 0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~n~0 := #t~nondet0;havoc #t~nondet0; {185#(<= 0 main_~x~0)} is VALID [2020-07-08 12:47:29,858 INFO L280 TraceCheckUtils]: 5: Hoare triple {185#(<= 0 main_~x~0)} assume !!(~x~0 < ~n~0);assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {185#(<= 0 main_~x~0)} is VALID [2020-07-08 12:47:29,859 INFO L280 TraceCheckUtils]: 6: Hoare triple {185#(<= 0 main_~x~0)} assume 0 != #t~nondet1;havoc #t~nondet1;~m~0 := ~x~0; {186#(<= 0 main_~m~0)} is VALID [2020-07-08 12:47:29,860 INFO L280 TraceCheckUtils]: 7: Hoare triple {186#(<= 0 main_~m~0)} ~x~0 := 1 + ~x~0; {186#(<= 0 main_~m~0)} is VALID [2020-07-08 12:47:29,861 INFO L280 TraceCheckUtils]: 8: Hoare triple {186#(<= 0 main_~m~0)} assume !(~x~0 < ~n~0); {186#(<= 0 main_~m~0)} is VALID [2020-07-08 12:47:29,863 INFO L263 TraceCheckUtils]: 9: Hoare triple {186#(<= 0 main_~m~0)} call __VERIFIER_assert((if ~m~0 >= 0 || ~n~0 <= 0 then 1 else 0)); {219#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2020-07-08 12:47:29,864 INFO L280 TraceCheckUtils]: 10: Hoare triple {219#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {223#(<= 1 __VERIFIER_assert_~cond)} is VALID [2020-07-08 12:47:29,865 INFO L280 TraceCheckUtils]: 11: Hoare triple {223#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {182#false} is VALID [2020-07-08 12:47:29,865 INFO L280 TraceCheckUtils]: 12: Hoare triple {182#false} assume !false; {182#false} is VALID [2020-07-08 12:47:29,866 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 12:47:29,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-08 12:47:29,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-08 12:47:29,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772016365] [2020-07-08 12:47:29,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-07-08 12:47:29,870 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:47:29,870 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-08 12:47:29,891 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:47:29,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-08 12:47:29,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:47:29,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-08 12:47:29,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-08 12:47:29,892 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2020-07-08 12:47:30,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:30,073 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-07-08 12:47:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-08 12:47:30,074 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-07-08 12:47:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:47:30,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-08 12:47:30,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 23 transitions. [2020-07-08 12:47:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-08 12:47:30,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 23 transitions. [2020-07-08 12:47:30,079 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 23 transitions. [2020-07-08 12:47:30,114 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:47:30,117 INFO L225 Difference]: With dead ends: 30 [2020-07-08 12:47:30,117 INFO L226 Difference]: Without dead ends: 26 [2020-07-08 12:47:30,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-08 12:47:30,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-08 12:47:30,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2020-07-08 12:47:30,135 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:47:30,135 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand 18 states. [2020-07-08 12:47:30,135 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 18 states. [2020-07-08 12:47:30,136 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 18 states. [2020-07-08 12:47:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:30,139 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-07-08 12:47:30,139 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-07-08 12:47:30,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:30,140 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:47:30,140 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 26 states. [2020-07-08 12:47:30,140 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 26 states. [2020-07-08 12:47:30,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:30,144 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-07-08 12:47:30,144 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-07-08 12:47:30,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:30,145 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:47:30,145 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:47:30,145 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:47:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-08 12:47:30,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-08 12:47:30,147 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-07-08 12:47:30,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:47:30,148 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-08 12:47:30,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-08 12:47:30,148 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-08 12:47:30,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-08 12:47:30,149 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:47:30,149 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:47:30,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-08 12:47:30,364 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:47:30,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:47:30,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1022031800, now seen corresponding path program 1 times [2020-07-08 12:47:30,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:47:30,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678462951] [2020-07-08 12:47:30,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:47:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:30,477 INFO L280 TraceCheckUtils]: 0: Hoare triple {354#true} assume true; {354#true} is VALID [2020-07-08 12:47:30,478 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {354#true} {354#true} #48#return; {354#true} is VALID [2020-07-08 12:47:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:30,490 INFO L280 TraceCheckUtils]: 0: Hoare triple {354#true} ~cond := #in~cond; {354#true} is VALID [2020-07-08 12:47:30,491 INFO L280 TraceCheckUtils]: 1: Hoare triple {354#true} assume !(0 == ~cond); {354#true} is VALID [2020-07-08 12:47:30,491 INFO L280 TraceCheckUtils]: 2: Hoare triple {354#true} assume true; {354#true} is VALID [2020-07-08 12:47:30,493 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {354#true} {359#(<= main_~n~0 0)} #52#return; {359#(<= main_~n~0 0)} is VALID [2020-07-08 12:47:30,494 INFO L263 TraceCheckUtils]: 0: Hoare triple {354#true} call ULTIMATE.init(); {354#true} is VALID [2020-07-08 12:47:30,494 INFO L280 TraceCheckUtils]: 1: Hoare triple {354#true} assume true; {354#true} is VALID [2020-07-08 12:47:30,494 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {354#true} {354#true} #48#return; {354#true} is VALID [2020-07-08 12:47:30,495 INFO L263 TraceCheckUtils]: 3: Hoare triple {354#true} call #t~ret2 := main(); {354#true} is VALID [2020-07-08 12:47:30,496 INFO L280 TraceCheckUtils]: 4: Hoare triple {354#true} ~x~0 := 0;~m~0 := 0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~n~0 := #t~nondet0;havoc #t~nondet0; {358#(<= main_~x~0 0)} is VALID [2020-07-08 12:47:30,497 INFO L280 TraceCheckUtils]: 5: Hoare triple {358#(<= main_~x~0 0)} assume !(~x~0 < ~n~0); {359#(<= main_~n~0 0)} is VALID [2020-07-08 12:47:30,498 INFO L263 TraceCheckUtils]: 6: Hoare triple {359#(<= main_~n~0 0)} call __VERIFIER_assert((if ~m~0 >= 0 || ~n~0 <= 0 then 1 else 0)); {354#true} is VALID [2020-07-08 12:47:30,498 INFO L280 TraceCheckUtils]: 7: Hoare triple {354#true} ~cond := #in~cond; {354#true} is VALID [2020-07-08 12:47:30,498 INFO L280 TraceCheckUtils]: 8: Hoare triple {354#true} assume !(0 == ~cond); {354#true} is VALID [2020-07-08 12:47:30,499 INFO L280 TraceCheckUtils]: 9: Hoare triple {354#true} assume true; {354#true} is VALID [2020-07-08 12:47:30,500 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {354#true} {359#(<= main_~n~0 0)} #52#return; {359#(<= main_~n~0 0)} is VALID [2020-07-08 12:47:30,501 INFO L263 TraceCheckUtils]: 11: Hoare triple {359#(<= main_~n~0 0)} call __VERIFIER_assert((if ~m~0 < ~n~0 || ~n~0 <= 0 then 1 else 0)); {364#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 12:47:30,503 INFO L280 TraceCheckUtils]: 12: Hoare triple {364#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {365#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 12:47:30,504 INFO L280 TraceCheckUtils]: 13: Hoare triple {365#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {355#false} is VALID [2020-07-08 12:47:30,504 INFO L280 TraceCheckUtils]: 14: Hoare triple {355#false} assume !false; {355#false} is VALID [2020-07-08 12:47:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 12:47:30,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678462951] [2020-07-08 12:47:30,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:47:30,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-08 12:47:30,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207679542] [2020-07-08 12:47:30,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-08 12:47:30,507 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:47:30,507 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-08 12:47:30,528 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:47:30,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-08 12:47:30,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:47:30,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-08 12:47:30,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-08 12:47:30,530 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-07-08 12:47:30,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:30,731 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-07-08 12:47:30,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-08 12:47:30,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-08 12:47:30,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:47:30,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 12:47:30,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 31 transitions. [2020-07-08 12:47:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 12:47:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 31 transitions. [2020-07-08 12:47:30,751 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 31 transitions. [2020-07-08 12:47:30,800 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:47:30,801 INFO L225 Difference]: With dead ends: 31 [2020-07-08 12:47:30,802 INFO L226 Difference]: Without dead ends: 21 [2020-07-08 12:47:30,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-08 12:47:30,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-08 12:47:30,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-07-08 12:47:30,840 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:47:30,841 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand 19 states. [2020-07-08 12:47:30,841 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 19 states. [2020-07-08 12:47:30,841 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 19 states. [2020-07-08 12:47:30,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:30,844 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-08 12:47:30,845 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-07-08 12:47:30,845 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:30,845 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:47:30,846 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 21 states. [2020-07-08 12:47:30,846 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 21 states. [2020-07-08 12:47:30,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:30,849 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-08 12:47:30,852 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-07-08 12:47:30,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:30,852 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:47:30,853 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:47:30,853 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:47:30,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-08 12:47:30,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-07-08 12:47:30,857 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2020-07-08 12:47:30,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:47:30,858 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-07-08 12:47:30,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-08 12:47:30,858 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-08 12:47:30,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-08 12:47:30,859 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:47:30,860 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:47:30,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-08 12:47:30,860 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:47:30,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:47:30,861 INFO L82 PathProgramCache]: Analyzing trace with hash 996292415, now seen corresponding path program 1 times [2020-07-08 12:47:30,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:47:30,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34706891] [2020-07-08 12:47:30,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:47:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:31,006 INFO L280 TraceCheckUtils]: 0: Hoare triple {488#true} assume true; {488#true} is VALID [2020-07-08 12:47:31,007 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {488#true} {488#true} #48#return; {488#true} is VALID [2020-07-08 12:47:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:31,018 INFO L280 TraceCheckUtils]: 0: Hoare triple {488#true} ~cond := #in~cond; {488#true} is VALID [2020-07-08 12:47:31,018 INFO L280 TraceCheckUtils]: 1: Hoare triple {488#true} assume !(0 == ~cond); {488#true} is VALID [2020-07-08 12:47:31,019 INFO L280 TraceCheckUtils]: 2: Hoare triple {488#true} assume true; {488#true} is VALID [2020-07-08 12:47:31,020 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {488#true} {493#(<= (+ main_~m~0 1) main_~n~0)} #52#return; {493#(<= (+ main_~m~0 1) main_~n~0)} is VALID [2020-07-08 12:47:31,021 INFO L263 TraceCheckUtils]: 0: Hoare triple {488#true} call ULTIMATE.init(); {488#true} is VALID [2020-07-08 12:47:31,021 INFO L280 TraceCheckUtils]: 1: Hoare triple {488#true} assume true; {488#true} is VALID [2020-07-08 12:47:31,021 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {488#true} {488#true} #48#return; {488#true} is VALID [2020-07-08 12:47:31,022 INFO L263 TraceCheckUtils]: 3: Hoare triple {488#true} call #t~ret2 := main(); {488#true} is VALID [2020-07-08 12:47:31,022 INFO L280 TraceCheckUtils]: 4: Hoare triple {488#true} ~x~0 := 0;~m~0 := 0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~n~0 := #t~nondet0;havoc #t~nondet0; {488#true} is VALID [2020-07-08 12:47:31,023 INFO L280 TraceCheckUtils]: 5: Hoare triple {488#true} assume !!(~x~0 < ~n~0);assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {492#(<= (+ main_~x~0 1) main_~n~0)} is VALID [2020-07-08 12:47:31,025 INFO L280 TraceCheckUtils]: 6: Hoare triple {492#(<= (+ main_~x~0 1) main_~n~0)} assume 0 != #t~nondet1;havoc #t~nondet1;~m~0 := ~x~0; {493#(<= (+ main_~m~0 1) main_~n~0)} is VALID [2020-07-08 12:47:31,026 INFO L280 TraceCheckUtils]: 7: Hoare triple {493#(<= (+ main_~m~0 1) main_~n~0)} ~x~0 := 1 + ~x~0; {493#(<= (+ main_~m~0 1) main_~n~0)} is VALID [2020-07-08 12:47:31,027 INFO L280 TraceCheckUtils]: 8: Hoare triple {493#(<= (+ main_~m~0 1) main_~n~0)} assume !(~x~0 < ~n~0); {493#(<= (+ main_~m~0 1) main_~n~0)} is VALID [2020-07-08 12:47:31,027 INFO L263 TraceCheckUtils]: 9: Hoare triple {493#(<= (+ main_~m~0 1) main_~n~0)} call __VERIFIER_assert((if ~m~0 >= 0 || ~n~0 <= 0 then 1 else 0)); {488#true} is VALID [2020-07-08 12:47:31,028 INFO L280 TraceCheckUtils]: 10: Hoare triple {488#true} ~cond := #in~cond; {488#true} is VALID [2020-07-08 12:47:31,028 INFO L280 TraceCheckUtils]: 11: Hoare triple {488#true} assume !(0 == ~cond); {488#true} is VALID [2020-07-08 12:47:31,028 INFO L280 TraceCheckUtils]: 12: Hoare triple {488#true} assume true; {488#true} is VALID [2020-07-08 12:47:31,030 INFO L275 TraceCheckUtils]: 13: Hoare quadruple {488#true} {493#(<= (+ main_~m~0 1) main_~n~0)} #52#return; {493#(<= (+ main_~m~0 1) main_~n~0)} is VALID [2020-07-08 12:47:31,031 INFO L263 TraceCheckUtils]: 14: Hoare triple {493#(<= (+ main_~m~0 1) main_~n~0)} call __VERIFIER_assert((if ~m~0 < ~n~0 || ~n~0 <= 0 then 1 else 0)); {498#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 12:47:31,033 INFO L280 TraceCheckUtils]: 15: Hoare triple {498#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {499#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 12:47:31,034 INFO L280 TraceCheckUtils]: 16: Hoare triple {499#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {489#false} is VALID [2020-07-08 12:47:31,034 INFO L280 TraceCheckUtils]: 17: Hoare triple {489#false} assume !false; {489#false} is VALID [2020-07-08 12:47:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 12:47:31,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34706891] [2020-07-08 12:47:31,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:47:31,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-08 12:47:31,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689411037] [2020-07-08 12:47:31,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-08 12:47:31,037 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:47:31,038 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-08 12:47:31,073 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 12:47:31,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-08 12:47:31,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:47:31,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-08 12:47:31,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-08 12:47:31,075 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 6 states. [2020-07-08 12:47:31,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:31,263 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-07-08 12:47:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-08 12:47:31,264 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-08 12:47:31,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:47:31,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 12:47:31,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 29 transitions. [2020-07-08 12:47:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 12:47:31,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 29 transitions. [2020-07-08 12:47:31,269 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 29 transitions. [2020-07-08 12:47:31,306 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:47:31,308 INFO L225 Difference]: With dead ends: 28 [2020-07-08 12:47:31,308 INFO L226 Difference]: Without dead ends: 19 [2020-07-08 12:47:31,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-08 12:47:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-08 12:47:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-08 12:47:31,323 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:47:31,324 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2020-07-08 12:47:31,324 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-08 12:47:31,324 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-08 12:47:31,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:31,326 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-08 12:47:31,326 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-08 12:47:31,327 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:31,327 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:47:31,327 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-08 12:47:31,327 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-08 12:47:31,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:31,329 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-08 12:47:31,329 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-08 12:47:31,330 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:31,330 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:47:31,330 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:47:31,330 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:47:31,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-08 12:47:31,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-08 12:47:31,332 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 18 [2020-07-08 12:47:31,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:47:31,332 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-08 12:47:31,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-08 12:47:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-08 12:47:31,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-08 12:47:31,333 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:47:31,334 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:47:31,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-08 12:47:31,334 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:47:31,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:47:31,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1254457853, now seen corresponding path program 1 times [2020-07-08 12:47:31,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:47:31,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476409719] [2020-07-08 12:47:31,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:47:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:31,436 INFO L280 TraceCheckUtils]: 0: Hoare triple {615#true} assume true; {615#true} is VALID [2020-07-08 12:47:31,436 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {615#true} {615#true} #48#return; {615#true} is VALID [2020-07-08 12:47:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:31,448 INFO L280 TraceCheckUtils]: 0: Hoare triple {615#true} ~cond := #in~cond; {615#true} is VALID [2020-07-08 12:47:31,448 INFO L280 TraceCheckUtils]: 1: Hoare triple {615#true} assume !(0 == ~cond); {615#true} is VALID [2020-07-08 12:47:31,449 INFO L280 TraceCheckUtils]: 2: Hoare triple {615#true} assume true; {615#true} is VALID [2020-07-08 12:47:31,449 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {615#true} {620#(<= (+ main_~m~0 1) main_~n~0)} #52#return; {620#(<= (+ main_~m~0 1) main_~n~0)} is VALID [2020-07-08 12:47:31,450 INFO L263 TraceCheckUtils]: 0: Hoare triple {615#true} call ULTIMATE.init(); {615#true} is VALID [2020-07-08 12:47:31,450 INFO L280 TraceCheckUtils]: 1: Hoare triple {615#true} assume true; {615#true} is VALID [2020-07-08 12:47:31,450 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {615#true} {615#true} #48#return; {615#true} is VALID [2020-07-08 12:47:31,450 INFO L263 TraceCheckUtils]: 3: Hoare triple {615#true} call #t~ret2 := main(); {615#true} is VALID [2020-07-08 12:47:31,452 INFO L280 TraceCheckUtils]: 4: Hoare triple {615#true} ~x~0 := 0;~m~0 := 0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~n~0 := #t~nondet0;havoc #t~nondet0; {619#(<= main_~m~0 main_~x~0)} is VALID [2020-07-08 12:47:31,453 INFO L280 TraceCheckUtils]: 5: Hoare triple {619#(<= main_~m~0 main_~x~0)} assume !!(~x~0 < ~n~0);assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {620#(<= (+ main_~m~0 1) main_~n~0)} is VALID [2020-07-08 12:47:31,453 INFO L280 TraceCheckUtils]: 6: Hoare triple {620#(<= (+ main_~m~0 1) main_~n~0)} assume !(0 != #t~nondet1);havoc #t~nondet1; {620#(<= (+ main_~m~0 1) main_~n~0)} is VALID [2020-07-08 12:47:31,454 INFO L280 TraceCheckUtils]: 7: Hoare triple {620#(<= (+ main_~m~0 1) main_~n~0)} ~x~0 := 1 + ~x~0; {620#(<= (+ main_~m~0 1) main_~n~0)} is VALID [2020-07-08 12:47:31,454 INFO L280 TraceCheckUtils]: 8: Hoare triple {620#(<= (+ main_~m~0 1) main_~n~0)} assume !(~x~0 < ~n~0); {620#(<= (+ main_~m~0 1) main_~n~0)} is VALID [2020-07-08 12:47:31,454 INFO L263 TraceCheckUtils]: 9: Hoare triple {620#(<= (+ main_~m~0 1) main_~n~0)} call __VERIFIER_assert((if ~m~0 >= 0 || ~n~0 <= 0 then 1 else 0)); {615#true} is VALID [2020-07-08 12:47:31,455 INFO L280 TraceCheckUtils]: 10: Hoare triple {615#true} ~cond := #in~cond; {615#true} is VALID [2020-07-08 12:47:31,455 INFO L280 TraceCheckUtils]: 11: Hoare triple {615#true} assume !(0 == ~cond); {615#true} is VALID [2020-07-08 12:47:31,455 INFO L280 TraceCheckUtils]: 12: Hoare triple {615#true} assume true; {615#true} is VALID [2020-07-08 12:47:31,457 INFO L275 TraceCheckUtils]: 13: Hoare quadruple {615#true} {620#(<= (+ main_~m~0 1) main_~n~0)} #52#return; {620#(<= (+ main_~m~0 1) main_~n~0)} is VALID [2020-07-08 12:47:31,458 INFO L263 TraceCheckUtils]: 14: Hoare triple {620#(<= (+ main_~m~0 1) main_~n~0)} call __VERIFIER_assert((if ~m~0 < ~n~0 || ~n~0 <= 0 then 1 else 0)); {625#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 12:47:31,460 INFO L280 TraceCheckUtils]: 15: Hoare triple {625#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {626#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 12:47:31,462 INFO L280 TraceCheckUtils]: 16: Hoare triple {626#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {616#false} is VALID [2020-07-08 12:47:31,462 INFO L280 TraceCheckUtils]: 17: Hoare triple {616#false} assume !false; {616#false} is VALID [2020-07-08 12:47:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 12:47:31,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476409719] [2020-07-08 12:47:31,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425828550] [2020-07-08 12:47:31,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-08 12:47:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:31,485 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-08 12:47:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:47:31,496 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-08 12:47:31,608 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-08 12:47:31,618 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-08 12:47:31,659 INFO L263 TraceCheckUtils]: 0: Hoare triple {615#true} call ULTIMATE.init(); {615#true} is VALID [2020-07-08 12:47:31,659 INFO L280 TraceCheckUtils]: 1: Hoare triple {615#true} assume true; {615#true} is VALID [2020-07-08 12:47:31,659 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {615#true} {615#true} #48#return; {615#true} is VALID [2020-07-08 12:47:31,660 INFO L263 TraceCheckUtils]: 3: Hoare triple {615#true} call #t~ret2 := main(); {615#true} is VALID [2020-07-08 12:47:31,661 INFO L280 TraceCheckUtils]: 4: Hoare triple {615#true} ~x~0 := 0;~m~0 := 0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~n~0 := #t~nondet0;havoc #t~nondet0; {642#(and (<= 0 main_~x~0) (<= main_~m~0 0))} is VALID [2020-07-08 12:47:31,662 INFO L280 TraceCheckUtils]: 5: Hoare triple {642#(and (<= 0 main_~x~0) (<= main_~m~0 0))} assume !!(~x~0 < ~n~0);assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {646#(and (<= 1 main_~n~0) (<= main_~m~0 0))} is VALID [2020-07-08 12:47:31,663 INFO L280 TraceCheckUtils]: 6: Hoare triple {646#(and (<= 1 main_~n~0) (<= main_~m~0 0))} assume !(0 != #t~nondet1);havoc #t~nondet1; {646#(and (<= 1 main_~n~0) (<= main_~m~0 0))} is VALID [2020-07-08 12:47:31,663 INFO L280 TraceCheckUtils]: 7: Hoare triple {646#(and (<= 1 main_~n~0) (<= main_~m~0 0))} ~x~0 := 1 + ~x~0; {646#(and (<= 1 main_~n~0) (<= main_~m~0 0))} is VALID [2020-07-08 12:47:31,664 INFO L280 TraceCheckUtils]: 8: Hoare triple {646#(and (<= 1 main_~n~0) (<= main_~m~0 0))} assume !(~x~0 < ~n~0); {646#(and (<= 1 main_~n~0) (<= main_~m~0 0))} is VALID [2020-07-08 12:47:31,664 INFO L263 TraceCheckUtils]: 9: Hoare triple {646#(and (<= 1 main_~n~0) (<= main_~m~0 0))} call __VERIFIER_assert((if ~m~0 >= 0 || ~n~0 <= 0 then 1 else 0)); {615#true} is VALID [2020-07-08 12:47:31,665 INFO L280 TraceCheckUtils]: 10: Hoare triple {615#true} ~cond := #in~cond; {615#true} is VALID [2020-07-08 12:47:31,665 INFO L280 TraceCheckUtils]: 11: Hoare triple {615#true} assume !(0 == ~cond); {615#true} is VALID [2020-07-08 12:47:31,665 INFO L280 TraceCheckUtils]: 12: Hoare triple {615#true} assume true; {615#true} is VALID [2020-07-08 12:47:31,670 INFO L275 TraceCheckUtils]: 13: Hoare quadruple {615#true} {646#(and (<= 1 main_~n~0) (<= main_~m~0 0))} #52#return; {646#(and (<= 1 main_~n~0) (<= main_~m~0 0))} is VALID [2020-07-08 12:47:31,672 INFO L263 TraceCheckUtils]: 14: Hoare triple {646#(and (<= 1 main_~n~0) (<= main_~m~0 0))} call __VERIFIER_assert((if ~m~0 < ~n~0 || ~n~0 <= 0 then 1 else 0)); {674#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2020-07-08 12:47:31,673 INFO L280 TraceCheckUtils]: 15: Hoare triple {674#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {678#(<= 1 __VERIFIER_assert_~cond)} is VALID [2020-07-08 12:47:31,674 INFO L280 TraceCheckUtils]: 16: Hoare triple {678#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {616#false} is VALID [2020-07-08 12:47:31,674 INFO L280 TraceCheckUtils]: 17: Hoare triple {616#false} assume !false; {616#false} is VALID [2020-07-08 12:47:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 12:47:31,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-08 12:47:31,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-07-08 12:47:31,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926347408] [2020-07-08 12:47:31,677 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-07-08 12:47:31,677 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:47:31,678 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states. [2020-07-08 12:47:31,716 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:47:31,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-08 12:47:31,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:47:31,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-08 12:47:31,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-08 12:47:31,718 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2020-07-08 12:47:31,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:31,887 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-08 12:47:31,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-08 12:47:31,887 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-07-08 12:47:31,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:47:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-08 12:47:31,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 19 transitions. [2020-07-08 12:47:31,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-08 12:47:31,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 19 transitions. [2020-07-08 12:47:31,891 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 19 transitions. [2020-07-08 12:47:31,925 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:47:31,925 INFO L225 Difference]: With dead ends: 19 [2020-07-08 12:47:31,926 INFO L226 Difference]: Without dead ends: 0 [2020-07-08 12:47:31,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-08 12:47:31,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-08 12:47:31,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-08 12:47:31,927 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:47:31,928 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-08 12:47:31,928 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 12:47:31,928 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 12:47:31,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:31,929 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 12:47:31,929 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 12:47:31,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:31,929 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:47:31,929 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 12:47:31,929 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 12:47:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:47:31,930 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 12:47:31,930 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 12:47:31,930 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:31,930 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:47:31,930 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:47:31,930 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:47:31,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-08 12:47:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-08 12:47:31,931 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-08 12:47:31,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:47:31,931 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-08 12:47:31,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-08 12:47:31,931 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 12:47:31,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:47:32,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-08 12:47:32,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-08 12:47:32,371 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-08 12:47:32,371 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-08 12:47:32,371 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-08 12:47:32,371 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-08 12:47:32,372 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-08 12:47:32,372 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-08 12:47:32,372 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-08 12:47:32,372 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-08 12:47:32,377 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-08 12:47:32,378 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-08 12:47:32,378 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-07-08 12:47:32,378 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-07-08 12:47:32,378 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-07-08 12:47:32,378 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (<= 0 main_~x~0)) (.cse1 (<= 0 main_~m~0))) (or (and (<= main_~x~0 0) (<= main_~n~0 0) .cse0 .cse1) (and (<= (+ main_~m~0 1) main_~n~0) .cse0 .cse1))) [2020-07-08 12:47:32,378 INFO L268 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-07-08 12:47:32,378 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 20) no Hoare annotation was computed. [2020-07-08 12:47:32,379 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 0 main_~x~0)) (.cse1 (<= 0 main_~m~0))) (or (and (<= main_~x~0 0) .cse0 (<= main_~m~0 0) .cse1) (and (<= (+ main_~m~0 1) main_~n~0) .cse0 .cse1))) [2020-07-08 12:47:32,379 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 0 main_~x~0)) (.cse1 (<= 0 main_~m~0))) (or (and (<= main_~x~0 0) (<= main_~n~0 0) .cse0 .cse1) (and (<= (+ main_~m~0 1) main_~n~0) .cse0 .cse1))) [2020-07-08 12:47:32,379 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2020-07-08 12:47:32,379 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-08 12:47:32,379 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-08 12:47:32,379 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-08 12:47:32,380 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-08 12:47:32,380 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-08 12:47:32,380 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-08 12:47:32,386 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-08 12:47:32,387 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-08 12:47:32,391 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-08 12:47:32,392 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-08 12:47:32,392 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 12:47:32,392 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-08 12:47:32,392 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-08 12:47:32,394 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-08 12:47:32,394 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-08 12:47:32,394 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-08 12:47:32,394 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 12:47:32,394 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-08 12:47:32,394 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-08 12:47:32,394 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-08 12:47:32,395 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-08 12:47:32,395 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-08 12:47:32,395 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2020-07-08 12:47:32,395 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-08 12:47:32,395 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-08 12:47:32,395 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-08 12:47:32,395 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-08 12:47:32,396 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-08 12:47:32,396 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-08 12:47:32,396 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-08 12:47:32,396 INFO L163 areAnnotationChecker]: CFG has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-08 12:47:32,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 12:47:32 BoogieIcfgContainer [2020-07-08 12:47:32,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 12:47:32,411 INFO L168 Benchmark]: Toolchain (without parser) took 4715.19 ms. Allocated memory was 136.8 MB in the beginning and 251.1 MB in the end (delta: 114.3 MB). Free memory was 101.9 MB in the beginning and 209.3 MB in the end (delta: -107.4 MB). Peak memory consumption was 6.9 MB. Max. memory is 7.1 GB. [2020-07-08 12:47:32,412 INFO L168 Benchmark]: CDTParser took 1.55 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-08 12:47:32,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.01 ms. Allocated memory is still 136.8 MB. Free memory was 101.5 MB in the beginning and 91.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-08 12:47:32,414 INFO L168 Benchmark]: Boogie Preprocessor took 128.82 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 91.5 MB in the beginning and 179.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-08 12:47:32,415 INFO L168 Benchmark]: RCFGBuilder took 425.05 ms. Allocated memory is still 200.8 MB. Free memory was 179.0 MB in the beginning and 162.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-07-08 12:47:32,416 INFO L168 Benchmark]: TraceAbstraction took 3849.70 ms. Allocated memory was 200.8 MB in the beginning and 251.1 MB in the end (delta: 50.3 MB). Free memory was 162.2 MB in the beginning and 209.3 MB in the end (delta: -47.1 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-07-08 12:47:32,420 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 1.55 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 306.01 ms. Allocated memory is still 136.8 MB. Free memory was 101.5 MB in the beginning and 91.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.82 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 91.5 MB in the beginning and 179.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 425.05 ms. Allocated memory is still 200.8 MB. Free memory was 179.0 MB in the beginning and 162.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3849.70 ms. Allocated memory was 200.8 MB in the beginning and 251.1 MB in the end (delta: 50.3 MB). Free memory was 162.2 MB in the beginning and 209.3 MB in the end (delta: -47.1 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: (((x <= 0 && 0 <= x) && m <= 0) && 0 <= m) || ((m + 1 <= n && 0 <= x) && 0 <= m) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 79 SDtfs, 48 SDslu, 260 SDs, 0 SdLazy, 128 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 23 NumberOfFragments, 83 HoareAnnotationTreeSize, 15 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 81 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3648 SizeOfPredicates, 6 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 9/13 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...