/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 23:39:43,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 23:39:43,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 23:39:43,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 23:39:43,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 23:39:43,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 23:39:43,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 23:39:43,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 23:39:43,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 23:39:43,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 23:39:43,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 23:39:43,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 23:39:43,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 23:39:43,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 23:39:43,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 23:39:43,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 23:39:43,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 23:39:43,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 23:39:43,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 23:39:43,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 23:39:43,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 23:39:43,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 23:39:43,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 23:39:43,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 23:39:43,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 23:39:43,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-08 23:39:43,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-08 23:39:43,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-08 23:39:43,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-08 23:39:43,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-08 23:39:43,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-08 23:39:43,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-08 23:39:43,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-08 23:39:43,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 23:39:43,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 23:39:43,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 23:39:43,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 23:39:43,419 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 23:39:43,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 23:39:43,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 23:39:43,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 23:39:43,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 23:39:43,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 23:39:43,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 23:39:43,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 23:39:43,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 23:39:43,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 23:39:43,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 23:39:43,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 23:39:43,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 23:39:43,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 23:39:43,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 23:39:43,424 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 23:39:43,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 23:39:43,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 23:39:43,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 23:39:43,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 23:39:43,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 23:39:43,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 23:39:43,426 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-08 23:39:43,738 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 23:39:43,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 23:39:43,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 23:39:43,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 23:39:43,759 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 23:39:43,760 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-07-08 23:39:43,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ad0f81ce/8e0fba1b4d0348598262536e0e5d53e8/FLAG14b95fd3b [2020-07-08 23:39:44,396 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 23:39:44,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-07-08 23:39:44,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ad0f81ce/8e0fba1b4d0348598262536e0e5d53e8/FLAG14b95fd3b [2020-07-08 23:39:44,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ad0f81ce/8e0fba1b4d0348598262536e0e5d53e8 [2020-07-08 23:39:44,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 23:39:44,746 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 23:39:44,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 23:39:44,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 23:39:44,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 23:39:44,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 11:39:44" (1/1) ... [2020-07-08 23:39:44,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c70a2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:39:44, skipping insertion in model container [2020-07-08 23:39:44,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 11:39:44" (1/1) ... [2020-07-08 23:39:44,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 23:39:44,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 23:39:45,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 23:39:45,079 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 23:39:45,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 23:39:45,125 INFO L208 MainTranslator]: Completed translation [2020-07-08 23:39:45,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:39:45 WrapperNode [2020-07-08 23:39:45,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 23:39:45,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 23:39:45,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 23:39:45,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 23:39:45,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:39:45" (1/1) ... [2020-07-08 23:39:45,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:39:45" (1/1) ... [2020-07-08 23:39:45,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:39:45" (1/1) ... [2020-07-08 23:39:45,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:39:45" (1/1) ... [2020-07-08 23:39:45,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:39:45" (1/1) ... [2020-07-08 23:39:45,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:39:45" (1/1) ... [2020-07-08 23:39:45,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:39:45" (1/1) ... [2020-07-08 23:39:45,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 23:39:45,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 23:39:45,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 23:39:45,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 23:39:45,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:39:45" (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 23:39:45,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 23:39:45,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 23:39:45,355 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-08 23:39:45,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 23:39:45,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 23:39:45,356 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-08 23:39:45,356 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-08 23:39:45,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 23:39:45,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 23:39:45,356 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 23:39:45,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 23:39:45,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 23:39:45,763 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 23:39:45,764 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-08 23:39:45,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 11:39:45 BoogieIcfgContainer [2020-07-08 23:39:45,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 23:39:45,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 23:39:45,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 23:39:45,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 23:39:45,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 11:39:44" (1/3) ... [2020-07-08 23:39:45,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd64fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 11:39:45, skipping insertion in model container [2020-07-08 23:39:45,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:39:45" (2/3) ... [2020-07-08 23:39:45,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd64fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 11:39:45, skipping insertion in model container [2020-07-08 23:39:45,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 11:39:45" (3/3) ... [2020-07-08 23:39:45,783 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2020-07-08 23:39:45,800 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 23:39:45,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-08 23:39:45,864 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-08 23:39:45,897 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 23:39:45,898 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 23:39:45,898 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-08 23:39:45,898 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 23:39:45,899 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 23:39:45,899 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 23:39:45,899 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 23:39:45,900 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 23:39:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-07-08 23:39:45,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-08 23:39:45,929 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:39:45,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:39:45,931 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:39:45,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:39:45,939 INFO L82 PathProgramCache]: Analyzing trace with hash -627197159, now seen corresponding path program 1 times [2020-07-08 23:39:45,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:39:45,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280020045] [2020-07-08 23:39:45,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:39:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:39:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:39:46,299 INFO L280 TraceCheckUtils]: 0: Hoare triple {67#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_100~0 |old(~__return_100~0)|))} ~__return_main~0 := 0; {58#true} is VALID [2020-07-08 23:39:46,300 INFO L280 TraceCheckUtils]: 1: Hoare triple {58#true} ~__return_100~0 := 0; {58#true} is VALID [2020-07-08 23:39:46,302 INFO L280 TraceCheckUtils]: 2: Hoare triple {58#true} assume true; {58#true} is VALID [2020-07-08 23:39:46,302 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {58#true} {58#true} #89#return; {58#true} is VALID [2020-07-08 23:39:46,308 INFO L263 TraceCheckUtils]: 0: Hoare triple {58#true} call ULTIMATE.init(); {67#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_100~0 |old(~__return_100~0)|))} is VALID [2020-07-08 23:39:46,308 INFO L280 TraceCheckUtils]: 1: Hoare triple {67#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_100~0 |old(~__return_100~0)|))} ~__return_main~0 := 0; {58#true} is VALID [2020-07-08 23:39:46,309 INFO L280 TraceCheckUtils]: 2: Hoare triple {58#true} ~__return_100~0 := 0; {58#true} is VALID [2020-07-08 23:39:46,309 INFO L280 TraceCheckUtils]: 3: Hoare triple {58#true} assume true; {58#true} is VALID [2020-07-08 23:39:46,310 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {58#true} {58#true} #89#return; {58#true} is VALID [2020-07-08 23:39:46,310 INFO L263 TraceCheckUtils]: 5: Hoare triple {58#true} call #t~ret1 := main(); {58#true} is VALID [2020-07-08 23:39:46,310 INFO L280 TraceCheckUtils]: 6: Hoare triple {58#true} havoc ~main__offset~0; {58#true} is VALID [2020-07-08 23:39:46,311 INFO L280 TraceCheckUtils]: 7: Hoare triple {58#true} havoc ~main__length~0; {58#true} is VALID [2020-07-08 23:39:46,312 INFO L280 TraceCheckUtils]: 8: Hoare triple {58#true} havoc ~main__nlen~0; {58#true} is VALID [2020-07-08 23:39:46,312 INFO L280 TraceCheckUtils]: 9: Hoare triple {58#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {58#true} is VALID [2020-07-08 23:39:46,313 INFO L280 TraceCheckUtils]: 10: Hoare triple {58#true} ~main__nlen~0 := #t~nondet0; {58#true} is VALID [2020-07-08 23:39:46,313 INFO L280 TraceCheckUtils]: 11: Hoare triple {58#true} havoc #t~nondet0; {58#true} is VALID [2020-07-08 23:39:46,314 INFO L280 TraceCheckUtils]: 12: Hoare triple {58#true} havoc ~main__i~0; {58#true} is VALID [2020-07-08 23:39:46,314 INFO L280 TraceCheckUtils]: 13: Hoare triple {58#true} havoc ~main__j~0; {58#true} is VALID [2020-07-08 23:39:46,314 INFO L280 TraceCheckUtils]: 14: Hoare triple {58#true} ~main__i~0 := 0; {58#true} is VALID [2020-07-08 23:39:46,316 INFO L280 TraceCheckUtils]: 15: Hoare triple {58#true} assume ~main__i~0 < ~main__nlen~0; {64#(< main_~main__i~0 main_~main__nlen~0)} is VALID [2020-07-08 23:39:46,317 INFO L280 TraceCheckUtils]: 16: Hoare triple {64#(< main_~main__i~0 main_~main__nlen~0)} ~main__j~0 := 0; {64#(< main_~main__i~0 main_~main__nlen~0)} is VALID [2020-07-08 23:39:46,318 INFO L280 TraceCheckUtils]: 17: Hoare triple {64#(< main_~main__i~0 main_~main__nlen~0)} assume ~main__j~0 < 8; {64#(< main_~main__i~0 main_~main__nlen~0)} is VALID [2020-07-08 23:39:46,320 INFO L280 TraceCheckUtils]: 18: Hoare triple {64#(< main_~main__i~0 main_~main__nlen~0)} havoc ~__tmp_1~0; {64#(< main_~main__i~0 main_~main__nlen~0)} is VALID [2020-07-08 23:39:46,322 INFO L280 TraceCheckUtils]: 19: Hoare triple {64#(< main_~main__i~0 main_~main__nlen~0)} ~__tmp_1~0 := (if 0 <= ~main__nlen~0 - 1 - ~main__i~0 then 1 else 0); {65#(not (= 0 main_~__tmp_1~0))} is VALID [2020-07-08 23:39:46,323 INFO L280 TraceCheckUtils]: 20: Hoare triple {65#(not (= 0 main_~__tmp_1~0))} havoc ~__VERIFIER_assert__cond~0; {65#(not (= 0 main_~__tmp_1~0))} is VALID [2020-07-08 23:39:46,325 INFO L280 TraceCheckUtils]: 21: Hoare triple {65#(not (= 0 main_~__tmp_1~0))} ~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {66#(not (= 0 main_~__VERIFIER_assert__cond~0))} is VALID [2020-07-08 23:39:46,328 INFO L280 TraceCheckUtils]: 22: Hoare triple {66#(not (= 0 main_~__VERIFIER_assert__cond~0))} assume 0 == ~__VERIFIER_assert__cond~0; {59#false} is VALID [2020-07-08 23:39:46,328 INFO L280 TraceCheckUtils]: 23: Hoare triple {59#false} assume !false; {59#false} is VALID [2020-07-08 23:39:46,339 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 23:39:46,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280020045] [2020-07-08 23:39:46,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 23:39:46,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-08 23:39:46,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624105762] [2020-07-08 23:39:46,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-07-08 23:39:46,362 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:39:46,366 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-08 23:39:46,425 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:39:46,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-08 23:39:46,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:39:46,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-08 23:39:46,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-08 23:39:46,441 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 6 states. [2020-07-08 23:39:47,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:39:47,286 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-07-08 23:39:47,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-08 23:39:47,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-07-08 23:39:47,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:39:47,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 23:39:47,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 66 transitions. [2020-07-08 23:39:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 23:39:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 66 transitions. [2020-07-08 23:39:47,340 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 66 transitions. [2020-07-08 23:39:47,461 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:39:47,476 INFO L225 Difference]: With dead ends: 61 [2020-07-08 23:39:47,477 INFO L226 Difference]: Without dead ends: 43 [2020-07-08 23:39:47,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-07-08 23:39:47,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-08 23:39:47,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-08 23:39:47,668 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:39:47,669 INFO L82 GeneralOperation]: Start isEquivalent. First operand 43 states. Second operand 43 states. [2020-07-08 23:39:47,670 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand 43 states. [2020-07-08 23:39:47,670 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 43 states. [2020-07-08 23:39:47,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:39:47,677 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-07-08 23:39:47,677 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-07-08 23:39:47,678 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:39:47,679 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:39:47,679 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand 43 states. [2020-07-08 23:39:47,679 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 43 states. [2020-07-08 23:39:47,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:39:47,685 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-07-08 23:39:47,686 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-07-08 23:39:47,686 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:39:47,687 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:39:47,687 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:39:47,687 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:39:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-08 23:39:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-07-08 23:39:47,694 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 24 [2020-07-08 23:39:47,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:39:47,694 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-07-08 23:39:47,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-08 23:39:47,695 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 43 states and 45 transitions. [2020-07-08 23:39:47,777 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:39:47,777 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-07-08 23:39:47,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-08 23:39:47,778 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:39:47,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:39:47,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 23:39:47,780 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:39:47,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:39:47,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1662596629, now seen corresponding path program 1 times [2020-07-08 23:39:47,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:39:47,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653194974] [2020-07-08 23:39:47,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:39:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:39:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:39:47,925 INFO L280 TraceCheckUtils]: 0: Hoare triple {383#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_100~0 |old(~__return_100~0)|))} ~__return_main~0 := 0; {374#true} is VALID [2020-07-08 23:39:47,926 INFO L280 TraceCheckUtils]: 1: Hoare triple {374#true} ~__return_100~0 := 0; {374#true} is VALID [2020-07-08 23:39:47,926 INFO L280 TraceCheckUtils]: 2: Hoare triple {374#true} assume true; {374#true} is VALID [2020-07-08 23:39:47,927 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {374#true} {374#true} #89#return; {374#true} is VALID [2020-07-08 23:39:47,928 INFO L263 TraceCheckUtils]: 0: Hoare triple {374#true} call ULTIMATE.init(); {383#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_100~0 |old(~__return_100~0)|))} is VALID [2020-07-08 23:39:47,929 INFO L280 TraceCheckUtils]: 1: Hoare triple {383#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_100~0 |old(~__return_100~0)|))} ~__return_main~0 := 0; {374#true} is VALID [2020-07-08 23:39:47,929 INFO L280 TraceCheckUtils]: 2: Hoare triple {374#true} ~__return_100~0 := 0; {374#true} is VALID [2020-07-08 23:39:47,930 INFO L280 TraceCheckUtils]: 3: Hoare triple {374#true} assume true; {374#true} is VALID [2020-07-08 23:39:47,930 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {374#true} {374#true} #89#return; {374#true} is VALID [2020-07-08 23:39:47,930 INFO L263 TraceCheckUtils]: 5: Hoare triple {374#true} call #t~ret1 := main(); {374#true} is VALID [2020-07-08 23:39:47,931 INFO L280 TraceCheckUtils]: 6: Hoare triple {374#true} havoc ~main__offset~0; {374#true} is VALID [2020-07-08 23:39:47,931 INFO L280 TraceCheckUtils]: 7: Hoare triple {374#true} havoc ~main__length~0; {374#true} is VALID [2020-07-08 23:39:47,932 INFO L280 TraceCheckUtils]: 8: Hoare triple {374#true} havoc ~main__nlen~0; {374#true} is VALID [2020-07-08 23:39:47,932 INFO L280 TraceCheckUtils]: 9: Hoare triple {374#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {374#true} is VALID [2020-07-08 23:39:47,932 INFO L280 TraceCheckUtils]: 10: Hoare triple {374#true} ~main__nlen~0 := #t~nondet0; {374#true} is VALID [2020-07-08 23:39:47,933 INFO L280 TraceCheckUtils]: 11: Hoare triple {374#true} havoc #t~nondet0; {374#true} is VALID [2020-07-08 23:39:47,933 INFO L280 TraceCheckUtils]: 12: Hoare triple {374#true} havoc ~main__i~0; {374#true} is VALID [2020-07-08 23:39:47,934 INFO L280 TraceCheckUtils]: 13: Hoare triple {374#true} havoc ~main__j~0; {374#true} is VALID [2020-07-08 23:39:47,935 INFO L280 TraceCheckUtils]: 14: Hoare triple {374#true} ~main__i~0 := 0; {380#(< 0 (+ main_~main__i~0 1))} is VALID [2020-07-08 23:39:47,936 INFO L280 TraceCheckUtils]: 15: Hoare triple {380#(< 0 (+ main_~main__i~0 1))} assume ~main__i~0 < ~main__nlen~0; {380#(< 0 (+ main_~main__i~0 1))} is VALID [2020-07-08 23:39:47,938 INFO L280 TraceCheckUtils]: 16: Hoare triple {380#(< 0 (+ main_~main__i~0 1))} ~main__j~0 := 0; {380#(< 0 (+ main_~main__i~0 1))} is VALID [2020-07-08 23:39:47,939 INFO L280 TraceCheckUtils]: 17: Hoare triple {380#(< 0 (+ main_~main__i~0 1))} assume ~main__j~0 < 8; {380#(< 0 (+ main_~main__i~0 1))} is VALID [2020-07-08 23:39:47,940 INFO L280 TraceCheckUtils]: 18: Hoare triple {380#(< 0 (+ main_~main__i~0 1))} havoc ~__tmp_1~0; {380#(< 0 (+ main_~main__i~0 1))} is VALID [2020-07-08 23:39:47,941 INFO L280 TraceCheckUtils]: 19: Hoare triple {380#(< 0 (+ main_~main__i~0 1))} ~__tmp_1~0 := (if 0 <= ~main__nlen~0 - 1 - ~main__i~0 then 1 else 0); {380#(< 0 (+ main_~main__i~0 1))} is VALID [2020-07-08 23:39:47,943 INFO L280 TraceCheckUtils]: 20: Hoare triple {380#(< 0 (+ main_~main__i~0 1))} havoc ~__VERIFIER_assert__cond~0; {380#(< 0 (+ main_~main__i~0 1))} is VALID [2020-07-08 23:39:47,944 INFO L280 TraceCheckUtils]: 21: Hoare triple {380#(< 0 (+ main_~main__i~0 1))} ~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {380#(< 0 (+ main_~main__i~0 1))} is VALID [2020-07-08 23:39:47,945 INFO L280 TraceCheckUtils]: 22: Hoare triple {380#(< 0 (+ main_~main__i~0 1))} assume !(0 == ~__VERIFIER_assert__cond~0); {380#(< 0 (+ main_~main__i~0 1))} is VALID [2020-07-08 23:39:47,946 INFO L280 TraceCheckUtils]: 23: Hoare triple {380#(< 0 (+ main_~main__i~0 1))} havoc ~__tmp_2~0; {380#(< 0 (+ main_~main__i~0 1))} is VALID [2020-07-08 23:39:47,947 INFO L280 TraceCheckUtils]: 24: Hoare triple {380#(< 0 (+ main_~main__i~0 1))} ~__tmp_2~0 := (if ~main__nlen~0 - 1 - ~main__i~0 < ~main__nlen~0 then 1 else 0); {381#(not (= 0 main_~__tmp_2~0))} is VALID [2020-07-08 23:39:47,949 INFO L280 TraceCheckUtils]: 25: Hoare triple {381#(not (= 0 main_~__tmp_2~0))} havoc ~__VERIFIER_assert__cond~1; {381#(not (= 0 main_~__tmp_2~0))} is VALID [2020-07-08 23:39:47,950 INFO L280 TraceCheckUtils]: 26: Hoare triple {381#(not (= 0 main_~__tmp_2~0))} ~__VERIFIER_assert__cond~1 := ~__tmp_2~0; {382#(not (= 0 main_~__VERIFIER_assert__cond~1))} is VALID [2020-07-08 23:39:47,951 INFO L280 TraceCheckUtils]: 27: Hoare triple {382#(not (= 0 main_~__VERIFIER_assert__cond~1))} assume 0 == ~__VERIFIER_assert__cond~1; {375#false} is VALID [2020-07-08 23:39:47,952 INFO L280 TraceCheckUtils]: 28: Hoare triple {375#false} assume !false; {375#false} is VALID [2020-07-08 23:39:47,954 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 23:39:47,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653194974] [2020-07-08 23:39:47,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 23:39:47,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-08 23:39:47,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343516770] [2020-07-08 23:39:47,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-07-08 23:39:47,959 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:39:47,959 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-08 23:39:47,999 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 23:39:47,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-08 23:39:48,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:39:48,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-08 23:39:48,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-08 23:39:48,002 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 6 states. [2020-07-08 23:39:48,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:39:48,562 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-07-08 23:39:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-08 23:39:48,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-07-08 23:39:48,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:39:48,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 23:39:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 48 transitions. [2020-07-08 23:39:48,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 23:39:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 48 transitions. [2020-07-08 23:39:48,572 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 48 transitions. [2020-07-08 23:39:48,643 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:39:48,645 INFO L225 Difference]: With dead ends: 46 [2020-07-08 23:39:48,645 INFO L226 Difference]: Without dead ends: 44 [2020-07-08 23:39:48,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-08 23:39:48,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-08 23:39:48,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-07-08 23:39:48,779 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:39:48,780 INFO L82 GeneralOperation]: Start isEquivalent. First operand 44 states. Second operand 41 states. [2020-07-08 23:39:48,780 INFO L74 IsIncluded]: Start isIncluded. First operand 44 states. Second operand 41 states. [2020-07-08 23:39:48,780 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 41 states. [2020-07-08 23:39:48,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:39:48,784 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-07-08 23:39:48,784 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-07-08 23:39:48,785 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:39:48,785 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:39:48,786 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states. Second operand 44 states. [2020-07-08 23:39:48,786 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 44 states. [2020-07-08 23:39:48,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:39:48,789 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-07-08 23:39:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-07-08 23:39:48,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:39:48,790 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:39:48,790 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:39:48,791 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:39:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-08 23:39:48,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-07-08 23:39:48,794 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 29 [2020-07-08 23:39:48,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:39:48,794 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-07-08 23:39:48,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-08 23:39:48,794 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 41 states and 43 transitions. [2020-07-08 23:39:48,880 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:39:48,881 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-07-08 23:39:48,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-08 23:39:48,883 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:39:48,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:39:48,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 23:39:48,885 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:39:48,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:39:48,886 INFO L82 PathProgramCache]: Analyzing trace with hash 792220297, now seen corresponding path program 1 times [2020-07-08 23:39:48,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:39:48,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557728835] [2020-07-08 23:39:48,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:39:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:39:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:39:49,119 INFO L280 TraceCheckUtils]: 0: Hoare triple {667#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_100~0 |old(~__return_100~0)|))} ~__return_main~0 := 0; {656#true} is VALID [2020-07-08 23:39:49,120 INFO L280 TraceCheckUtils]: 1: Hoare triple {656#true} ~__return_100~0 := 0; {656#true} is VALID [2020-07-08 23:39:49,120 INFO L280 TraceCheckUtils]: 2: Hoare triple {656#true} assume true; {656#true} is VALID [2020-07-08 23:39:49,121 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {656#true} {656#true} #89#return; {656#true} is VALID [2020-07-08 23:39:49,130 INFO L263 TraceCheckUtils]: 0: Hoare triple {656#true} call ULTIMATE.init(); {667#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_100~0 |old(~__return_100~0)|))} is VALID [2020-07-08 23:39:49,130 INFO L280 TraceCheckUtils]: 1: Hoare triple {667#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_100~0 |old(~__return_100~0)|))} ~__return_main~0 := 0; {656#true} is VALID [2020-07-08 23:39:49,130 INFO L280 TraceCheckUtils]: 2: Hoare triple {656#true} ~__return_100~0 := 0; {656#true} is VALID [2020-07-08 23:39:49,131 INFO L280 TraceCheckUtils]: 3: Hoare triple {656#true} assume true; {656#true} is VALID [2020-07-08 23:39:49,131 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {656#true} {656#true} #89#return; {656#true} is VALID [2020-07-08 23:39:49,131 INFO L263 TraceCheckUtils]: 5: Hoare triple {656#true} call #t~ret1 := main(); {656#true} is VALID [2020-07-08 23:39:49,132 INFO L280 TraceCheckUtils]: 6: Hoare triple {656#true} havoc ~main__offset~0; {656#true} is VALID [2020-07-08 23:39:49,132 INFO L280 TraceCheckUtils]: 7: Hoare triple {656#true} havoc ~main__length~0; {656#true} is VALID [2020-07-08 23:39:49,132 INFO L280 TraceCheckUtils]: 8: Hoare triple {656#true} havoc ~main__nlen~0; {656#true} is VALID [2020-07-08 23:39:49,133 INFO L280 TraceCheckUtils]: 9: Hoare triple {656#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {656#true} is VALID [2020-07-08 23:39:49,133 INFO L280 TraceCheckUtils]: 10: Hoare triple {656#true} ~main__nlen~0 := #t~nondet0; {656#true} is VALID [2020-07-08 23:39:49,133 INFO L280 TraceCheckUtils]: 11: Hoare triple {656#true} havoc #t~nondet0; {656#true} is VALID [2020-07-08 23:39:49,133 INFO L280 TraceCheckUtils]: 12: Hoare triple {656#true} havoc ~main__i~0; {656#true} is VALID [2020-07-08 23:39:49,134 INFO L280 TraceCheckUtils]: 13: Hoare triple {656#true} havoc ~main__j~0; {656#true} is VALID [2020-07-08 23:39:49,134 INFO L280 TraceCheckUtils]: 14: Hoare triple {656#true} ~main__i~0 := 0; {656#true} is VALID [2020-07-08 23:39:49,139 INFO L280 TraceCheckUtils]: 15: Hoare triple {656#true} assume ~main__i~0 < ~main__nlen~0; {656#true} is VALID [2020-07-08 23:39:49,139 INFO L280 TraceCheckUtils]: 16: Hoare triple {656#true} ~main__j~0 := 0; {656#true} is VALID [2020-07-08 23:39:49,140 INFO L280 TraceCheckUtils]: 17: Hoare triple {656#true} assume ~main__j~0 < 8; {656#true} is VALID [2020-07-08 23:39:49,140 INFO L280 TraceCheckUtils]: 18: Hoare triple {656#true} havoc ~__tmp_1~0; {656#true} is VALID [2020-07-08 23:39:49,144 INFO L280 TraceCheckUtils]: 19: Hoare triple {656#true} ~__tmp_1~0 := (if 0 <= ~main__nlen~0 - 1 - ~main__i~0 then 1 else 0); {662#(or (and (= 1 main_~__tmp_1~0) (<= (+ main_~main__i~0 1) main_~main__nlen~0)) (and (= 0 main_~__tmp_1~0) (< main_~main__nlen~0 (+ main_~main__i~0 1))))} is VALID [2020-07-08 23:39:49,145 INFO L280 TraceCheckUtils]: 20: Hoare triple {662#(or (and (= 1 main_~__tmp_1~0) (<= (+ main_~main__i~0 1) main_~main__nlen~0)) (and (= 0 main_~__tmp_1~0) (< main_~main__nlen~0 (+ main_~main__i~0 1))))} havoc ~__VERIFIER_assert__cond~0; {662#(or (and (= 1 main_~__tmp_1~0) (<= (+ main_~main__i~0 1) main_~main__nlen~0)) (and (= 0 main_~__tmp_1~0) (< main_~main__nlen~0 (+ main_~main__i~0 1))))} is VALID [2020-07-08 23:39:49,148 INFO L280 TraceCheckUtils]: 21: Hoare triple {662#(or (and (= 1 main_~__tmp_1~0) (<= (+ main_~main__i~0 1) main_~main__nlen~0)) (and (= 0 main_~__tmp_1~0) (< main_~main__nlen~0 (+ main_~main__i~0 1))))} ~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {663#(or (and (<= (+ main_~main__i~0 1) main_~main__nlen~0) (= 1 main_~__VERIFIER_assert__cond~0)) (and (= 0 main_~__VERIFIER_assert__cond~0) (< main_~main__nlen~0 (+ main_~main__i~0 1))))} is VALID [2020-07-08 23:39:49,149 INFO L280 TraceCheckUtils]: 22: Hoare triple {663#(or (and (<= (+ main_~main__i~0 1) main_~main__nlen~0) (= 1 main_~__VERIFIER_assert__cond~0)) (and (= 0 main_~__VERIFIER_assert__cond~0) (< main_~main__nlen~0 (+ main_~main__i~0 1))))} assume !(0 == ~__VERIFIER_assert__cond~0); {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} is VALID [2020-07-08 23:39:49,150 INFO L280 TraceCheckUtils]: 23: Hoare triple {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} havoc ~__tmp_2~0; {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} is VALID [2020-07-08 23:39:49,150 INFO L280 TraceCheckUtils]: 24: Hoare triple {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} ~__tmp_2~0 := (if ~main__nlen~0 - 1 - ~main__i~0 < ~main__nlen~0 then 1 else 0); {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} is VALID [2020-07-08 23:39:49,152 INFO L280 TraceCheckUtils]: 25: Hoare triple {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} havoc ~__VERIFIER_assert__cond~1; {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} is VALID [2020-07-08 23:39:49,152 INFO L280 TraceCheckUtils]: 26: Hoare triple {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} ~__VERIFIER_assert__cond~1 := ~__tmp_2~0; {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} is VALID [2020-07-08 23:39:49,162 INFO L280 TraceCheckUtils]: 27: Hoare triple {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} assume !(0 == ~__VERIFIER_assert__cond~1); {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} is VALID [2020-07-08 23:39:49,166 INFO L280 TraceCheckUtils]: 28: Hoare triple {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} ~main__j~0 := 1 + ~main__j~0; {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} is VALID [2020-07-08 23:39:49,169 INFO L280 TraceCheckUtils]: 29: Hoare triple {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} assume ~main__j~0 < 8; {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} is VALID [2020-07-08 23:39:49,170 INFO L280 TraceCheckUtils]: 30: Hoare triple {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} havoc ~__tmp_3~0; {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} is VALID [2020-07-08 23:39:49,171 INFO L280 TraceCheckUtils]: 31: Hoare triple {664#(<= (+ main_~main__i~0 1) main_~main__nlen~0)} ~__tmp_3~0 := (if 0 <= ~main__nlen~0 - 1 - ~main__i~0 then 1 else 0); {665#(not (= 0 main_~__tmp_3~0))} is VALID [2020-07-08 23:39:49,172 INFO L280 TraceCheckUtils]: 32: Hoare triple {665#(not (= 0 main_~__tmp_3~0))} havoc ~__VERIFIER_assert__cond~2; {665#(not (= 0 main_~__tmp_3~0))} is VALID [2020-07-08 23:39:49,173 INFO L280 TraceCheckUtils]: 33: Hoare triple {665#(not (= 0 main_~__tmp_3~0))} ~__VERIFIER_assert__cond~2 := ~__tmp_3~0; {666#(not (= 0 main_~__VERIFIER_assert__cond~2))} is VALID [2020-07-08 23:39:49,173 INFO L280 TraceCheckUtils]: 34: Hoare triple {666#(not (= 0 main_~__VERIFIER_assert__cond~2))} assume 0 == ~__VERIFIER_assert__cond~2; {657#false} is VALID [2020-07-08 23:39:49,174 INFO L280 TraceCheckUtils]: 35: Hoare triple {657#false} assume !false; {657#false} is VALID [2020-07-08 23:39:49,188 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 23:39:49,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557728835] [2020-07-08 23:39:49,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 23:39:49,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-08 23:39:49,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452100685] [2020-07-08 23:39:49,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-07-08 23:39:49,193 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:39:49,193 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-08 23:39:49,233 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:39:49,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-08 23:39:49,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:39:49,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-08 23:39:49,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-08 23:39:49,234 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 8 states. [2020-07-08 23:39:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:39:50,612 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-07-08 23:39:50,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-08 23:39:50,612 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-07-08 23:39:50,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:39:50,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-08 23:39:50,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 78 transitions. [2020-07-08 23:39:50,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-08 23:39:50,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 78 transitions. [2020-07-08 23:39:50,620 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 13 states and 78 transitions. [2020-07-08 23:39:50,742 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 78 edges. 78 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:39:50,742 INFO L225 Difference]: With dead ends: 72 [2020-07-08 23:39:50,743 INFO L226 Difference]: Without dead ends: 0 [2020-07-08 23:39:50,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-07-08 23:39:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-08 23:39:50,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-08 23:39:50,746 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:39:50,746 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-08 23:39:50,746 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 23:39:50,746 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 23:39:50,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:39:50,747 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 23:39:50,747 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 23:39:50,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:39:50,747 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:39:50,747 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 23:39:50,747 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 23:39:50,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:39:50,748 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 23:39:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 23:39:50,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:39:50,748 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:39:50,748 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:39:50,748 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:39:50,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-08 23:39:50,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-08 23:39:50,749 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-07-08 23:39:50,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:39:50,749 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-08 23:39:50,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-08 23:39:50,749 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-08 23:39:50,750 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:39:50,750 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 23:39:50,750 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:39:50,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-08 23:39:50,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-08 23:39:51,433 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-07-08 23:39:52,310 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-08 23:39:52,310 INFO L271 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: true [2020-07-08 23:39:52,310 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_100~0 |old(~__return_100~0)|)) [2020-07-08 23:39:52,310 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-08 23:39:52,310 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-08 23:39:52,311 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-08 23:39:52,311 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-08 23:39:52,311 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-08 23:39:52,311 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-08 23:39:52,311 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-08 23:39:52,311 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-07-08 23:39:52,311 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-07-08 23:39:52,311 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-08 23:39:52,311 INFO L264 CegarLoopResult]: At program point L31(lines 31 87) the Hoare annotation is: (and (= 1 main_~__tmp_1~0) (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (= 1 main_~__VERIFIER_assert__cond~0) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,312 INFO L264 CegarLoopResult]: At program point L93(lines 12 100) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,312 INFO L264 CegarLoopResult]: At program point L60(lines 60 68) the Hoare annotation is: (and (not (= 0 main_~__tmp_3~0)) (not (= 0 main_~__VERIFIER_assert__cond~2)) (not (= 0 main_~__VERIFIER_assert__cond~0)) (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (not (= 0 main_~__tmp_2~0)) (not (= 0 main_~__VERIFIER_assert__cond~1)) (not (= 0 main_~__tmp_1~0)) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,312 INFO L264 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (and (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,312 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 11 100) the Hoare annotation is: (or (and (not (= 0 main_~__VERIFIER_assert__cond~0)) (not (= 0 main_~__tmp_1~0))) (= |old(~__return_100~0)| ~__return_100~0)) [2020-07-08 23:39:52,313 INFO L264 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (and (not (= 0 main_~__VERIFIER_assert__cond~0)) (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (not (= 0 main_~__tmp_2~0)) (not (= 0 main_~__VERIFIER_assert__cond~1)) (not (= 0 main_~__tmp_1~0)) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,313 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,313 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-07-08 23:39:52,313 INFO L264 CegarLoopResult]: At program point L81(line 81) the Hoare annotation is: (and (not (= 0 main_~__VERIFIER_assert__cond~0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= 0 main_~__tmp_1~0))) [2020-07-08 23:39:52,313 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-07-08 23:39:52,314 INFO L264 CegarLoopResult]: At program point L77(lines 50 85) the Hoare annotation is: (and (not (= 0 main_~__VERIFIER_assert__cond~0)) (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (not (= 0 main_~__tmp_2~0)) (not (= 0 main_~__VERIFIER_assert__cond~1)) (not (= 0 main_~__tmp_1~0)) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,314 INFO L264 CegarLoopResult]: At program point L44(lines 44 85) the Hoare annotation is: (let ((.cse0 (< main_~main__i~0 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (not (= 0 main_~__tmp_2~0))) (.cse3 (not (= 0 main_~__VERIFIER_assert__cond~1))) (.cse4 (< 0 (+ main_~main__i~0 1)))) (or (and (not (= 0 main_~__tmp_3~0)) (not (= 0 main_~__VERIFIER_assert__cond~2)) (not (= 0 main_~__VERIFIER_assert__cond~0)) .cse0 .cse1 .cse2 .cse3 (not (= 0 main_~__tmp_1~0)) .cse4) (and (= 1 main_~__tmp_1~0) .cse0 .cse1 .cse2 .cse3 (= 1 main_~__VERIFIER_assert__cond~0) .cse4))) [2020-07-08 23:39:52,314 INFO L264 CegarLoopResult]: At program point L73(line 73) the Hoare annotation is: (and (not (= 0 main_~__VERIFIER_assert__cond~0)) (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (not (= 0 main_~__tmp_2~0)) (not (= 0 main_~__VERIFIER_assert__cond~1)) (not (= 0 main_~__tmp_1~0)) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,314 INFO L264 CegarLoopResult]: At program point L98(line 98) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-07-08 23:39:52,314 INFO L264 CegarLoopResult]: At program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 62) the Hoare annotation is: false [2020-07-08 23:39:52,314 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,315 INFO L264 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (and (not (= 0 main_~__VERIFIER_assert__cond~0)) (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (not (= 0 main_~__tmp_2~0)) (not (= 0 main_~__VERIFIER_assert__cond~1)) (not (= 0 main_~__tmp_1~0)) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,315 INFO L264 CegarLoopResult]: At program point L24(lines 24 94) the Hoare annotation is: (and (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,315 INFO L264 CegarLoopResult]: At program point L82(line 82) the Hoare annotation is: (and (not (= 0 main_~__VERIFIER_assert__cond~0)) (not (= 0 main_~__tmp_1~0))) [2020-07-08 23:39:52,315 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-07-08 23:39:52,315 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-07-08 23:39:52,315 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-07-08 23:39:52,315 INFO L264 CegarLoopResult]: At program point L74(lines 74 83) the Hoare annotation is: (and (not (= 0 main_~__VERIFIER_assert__cond~0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= 0 main_~__tmp_2~0)) (not (= 0 main_~__VERIFIER_assert__cond~1)) (not (= 0 main_~__tmp_1~0)) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,316 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (let ((.cse0 (< main_~main__i~0 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (< 0 (+ main_~main__i~0 1)))) (or (and (= 1 main_~__tmp_1~0) .cse0 .cse1 (= 1 main_~__VERIFIER_assert__cond~0) .cse2) (and (not (= 0 main_~__tmp_3~0)) (not (= 0 main_~__VERIFIER_assert__cond~2)) (not (= 0 main_~__VERIFIER_assert__cond~0)) .cse0 .cse1 (not (= 0 main_~__tmp_1~0)) .cse2))) [2020-07-08 23:39:52,316 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: false [2020-07-08 23:39:52,316 INFO L264 CegarLoopResult]: At program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 46) the Hoare annotation is: false [2020-07-08 23:39:52,316 INFO L264 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: false [2020-07-08 23:39:52,316 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (= 1 main_~__tmp_1~0) (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,316 INFO L264 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (not (= 0 main_~__tmp_3~0)) (not (= 0 main_~__VERIFIER_assert__cond~0)) (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (not (= 0 main_~__tmp_2~0)) (not (= 0 main_~__VERIFIER_assert__cond~1)) (not (= 0 main_~__tmp_1~0)) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,316 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-07-08 23:39:52,316 INFO L264 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: false [2020-07-08 23:39:52,317 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 11 100) the Hoare annotation is: (or (and (not (= 0 main_~__VERIFIER_assert__cond~0)) (not (= 0 main_~__tmp_1~0))) (= |old(~__return_100~0)| ~__return_100~0)) [2020-07-08 23:39:52,317 INFO L264 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 (< main_~main__i~0 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (not (= 0 main_~__tmp_2~0))) (.cse3 (< 0 (+ main_~main__i~0 1)))) (or (and (not (= 0 main_~__tmp_3~0)) (not (= 0 main_~__VERIFIER_assert__cond~2)) (not (= 0 main_~__VERIFIER_assert__cond~0)) .cse0 .cse1 .cse2 (not (= 0 main_~__tmp_1~0)) .cse3) (and (= 1 main_~__tmp_1~0) .cse0 .cse1 .cse2 (= 1 main_~__VERIFIER_assert__cond~0) .cse3))) [2020-07-08 23:39:52,317 INFO L264 CegarLoopResult]: At program point L67(lines 37 87) the Hoare annotation is: (let ((.cse0 (< main_~main__i~0 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (< 0 (+ main_~main__i~0 1)))) (or (and (= 1 main_~__tmp_1~0) .cse0 .cse1 (= 1 main_~__VERIFIER_assert__cond~0) .cse2) (and (not (= 0 main_~__tmp_3~0)) (not (= 0 main_~__VERIFIER_assert__cond~2)) (not (= 0 main_~__VERIFIER_assert__cond~0)) .cse0 .cse1 (not (= 0 main_~__tmp_1~0)) .cse2))) [2020-07-08 23:39:52,317 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: false [2020-07-08 23:39:52,318 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) the Hoare annotation is: false [2020-07-08 23:39:52,318 INFO L264 CegarLoopResult]: At program point L63(line 63) the Hoare annotation is: false [2020-07-08 23:39:52,318 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (= 1 main_~__tmp_1~0) (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,318 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 100) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-07-08 23:39:52,320 INFO L264 CegarLoopResult]: At program point L92(line 92) the Hoare annotation is: (and (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,321 INFO L264 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (and (not (= 0 main_~__tmp_3~0)) (not (= 0 main_~__VERIFIER_assert__cond~0)) (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (not (= 0 main_~__tmp_2~0)) (not (= 0 main_~__VERIFIER_assert__cond~1)) (not (= 0 main_~__tmp_1~0)) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,321 INFO L264 CegarLoopResult]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (< main_~main__i~0 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (not (= 0 main_~__tmp_2~0))) (.cse3 (not (= 0 main_~__VERIFIER_assert__cond~1))) (.cse4 (< 0 (+ main_~main__i~0 1)))) (or (and (not (= 0 main_~__tmp_3~0)) (not (= 0 main_~__VERIFIER_assert__cond~2)) (not (= 0 main_~__VERIFIER_assert__cond~0)) .cse0 .cse1 .cse2 .cse3 (not (= 0 main_~__tmp_1~0)) .cse4) (and (= 1 main_~__tmp_1~0) .cse0 .cse1 .cse2 .cse3 (= 1 main_~__VERIFIER_assert__cond~0) .cse4))) [2020-07-08 23:39:52,321 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-07-08 23:39:52,322 INFO L264 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: false [2020-07-08 23:39:52,322 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-07-08 23:39:52,322 INFO L264 CegarLoopResult]: At program point L76(line 76) the Hoare annotation is: (and (not (= 0 main_~__VERIFIER_assert__cond~0)) (< main_~main__i~0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (not (= 0 main_~__tmp_2~0)) (not (= 0 main_~__VERIFIER_assert__cond~1)) (not (= 0 main_~__tmp_1~0)) (< 0 (+ main_~main__i~0 1))) [2020-07-08 23:39:52,322 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 (< main_~main__i~0 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (not (= 0 main_~__tmp_2~0))) (.cse3 (< 0 (+ main_~main__i~0 1)))) (or (and (not (= 0 main_~__tmp_3~0)) (not (= 0 main_~__VERIFIER_assert__cond~2)) (not (= 0 main_~__VERIFIER_assert__cond~0)) .cse0 .cse1 .cse2 (not (= 0 main_~__tmp_1~0)) .cse3) (and (= 1 main_~__tmp_1~0) .cse0 .cse1 .cse2 (= 1 main_~__VERIFIER_assert__cond~0) .cse3))) [2020-07-08 23:39:52,329 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-08 23:39:52,331 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 23:39:52,331 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 23:39:52,331 WARN L170 areAnnotationChecker]: L5-1 has no Hoare annotation [2020-07-08 23:39:52,331 WARN L170 areAnnotationChecker]: L5-3 has no Hoare annotation [2020-07-08 23:39:52,354 INFO L163 areAnnotationChecker]: CFG has 61 edges. 61 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-08 23:39:52,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 11:39:52 BoogieIcfgContainer [2020-07-08 23:39:52,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 23:39:52,378 INFO L168 Benchmark]: Toolchain (without parser) took 7632.63 ms. Allocated memory was 136.3 MB in the beginning and 292.6 MB in the end (delta: 156.2 MB). Free memory was 101.4 MB in the beginning and 103.6 MB in the end (delta: -2.2 MB). Peak memory consumption was 154.0 MB. Max. memory is 7.1 GB. [2020-07-08 23:39:52,378 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 136.3 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-08 23:39:52,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.38 ms. Allocated memory is still 136.3 MB. Free memory was 101.4 MB in the beginning and 91.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-08 23:39:52,380 INFO L168 Benchmark]: Boogie Preprocessor took 141.99 ms. Allocated memory was 136.3 MB in the beginning and 201.3 MB in the end (delta: 65.0 MB). Free memory was 91.0 MB in the beginning and 179.8 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-07-08 23:39:52,381 INFO L168 Benchmark]: RCFGBuilder took 502.05 ms. Allocated memory is still 201.3 MB. Free memory was 179.8 MB in the beginning and 155.5 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-07-08 23:39:52,382 INFO L168 Benchmark]: TraceAbstraction took 6602.38 ms. Allocated memory was 201.3 MB in the beginning and 292.6 MB in the end (delta: 91.2 MB). Free memory was 155.5 MB in the beginning and 103.6 MB in the end (delta: 51.9 MB). Peak memory consumption was 143.1 MB. Max. memory is 7.1 GB. [2020-07-08 23:39:52,387 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 136.3 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 379.38 ms. Allocated memory is still 136.3 MB. Free memory was 101.4 MB in the beginning and 91.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.99 ms. Allocated memory was 136.3 MB in the beginning and 201.3 MB in the end (delta: 65.0 MB). Free memory was 91.0 MB in the beginning and 179.8 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 502.05 ms. Allocated memory is still 201.3 MB. Free memory was 179.8 MB in the beginning and 155.5 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6602.38 ms. Allocated memory was 201.3 MB in the beginning and 292.6 MB in the end (delta: 91.2 MB). Free memory was 155.5 MB in the beginning and 103.6 MB in the end (delta: 51.9 MB). Peak memory consumption was 143.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 62]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: \old(__return_100) == __return_100 && 0 < main__i + 1 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (((((!(0 == __VERIFIER_assert__cond) && main__i < main__nlen) && \old(__return_100) == __return_100) && !(0 == __tmp_2)) && !(0 == __VERIFIER_assert__cond)) && !(0 == __tmp_1)) && 0 < main__i + 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((1 == __tmp_1 && main__i < main__nlen) && \old(__return_100) == __return_100) && 1 == __VERIFIER_assert__cond) && 0 < main__i + 1) || ((((((!(0 == __tmp_3) && !(0 == __VERIFIER_assert__cond)) && !(0 == __VERIFIER_assert__cond)) && main__i < main__nlen) && \old(__return_100) == __return_100) && !(0 == __tmp_1)) && 0 < main__i + 1) - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: (!(0 == __VERIFIER_assert__cond) && !(0 == __tmp_1)) || \old(__return_100) == __return_100 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 60 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 333 SDslu, 85 SDs, 0 SdLazy, 304 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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: 0.3s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 55 LocationsWithAnnotation, 55 PreInvPairs, 92 NumberOfFragments, 812 HoareAnnotationTreeSize, 55 FomulaSimplifications, 1452 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 55 FomulaSimplificationsInter, 432 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 8282 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...