/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/loops/count_up_down-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-11 02:27:31,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-11 02:27:31,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-11 02:27:31,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-11 02:27:31,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-11 02:27:31,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-11 02:27:31,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-11 02:27:31,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-11 02:27:31,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-11 02:27:31,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-11 02:27:31,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-11 02:27:31,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-11 02:27:31,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-11 02:27:31,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-11 02:27:31,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-11 02:27:31,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-11 02:27:31,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-11 02:27:31,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-11 02:27:31,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-11 02:27:31,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-11 02:27:31,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-11 02:27:31,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-11 02:27:31,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-11 02:27:31,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-11 02:27:31,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-11 02:27:31,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-11 02:27:31,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-11 02:27:31,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-11 02:27:31,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-11 02:27:31,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-11 02:27:31,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-11 02:27:31,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-11 02:27:31,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-11 02:27:31,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-11 02:27:31,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-11 02:27:31,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-11 02:27:31,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-11 02:27:31,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-11 02:27:31,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-11 02:27:31,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-11 02:27:31,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-11 02:27:31,393 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-11 02:27:31,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-11 02:27:31,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-11 02:27:31,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-11 02:27:31,405 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-11 02:27:31,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-11 02:27:31,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-11 02:27:31,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-11 02:27:31,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-11 02:27:31,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-11 02:27:31,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-11 02:27:31,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-11 02:27:31,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-11 02:27:31,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-11 02:27:31,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-11 02:27:31,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-11 02:27:31,407 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-11 02:27:31,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-11 02:27:31,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-11 02:27:31,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-11 02:27:31,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-11 02:27:31,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-11 02:27:31,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-11 02:27:31,409 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 [2020-07-11 02:27:31,692 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-11 02:27:31,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-11 02:27:31,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-11 02:27:31,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-11 02:27:31,712 INFO L275 PluginConnector]: CDTParser initialized [2020-07-11 02:27:31,712 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/count_up_down-2.c [2020-07-11 02:27:31,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c9bda42/2209ba3de5ec438698297b7b344f6616/FLAG4dc133df1 [2020-07-11 02:27:32,257 INFO L306 CDTParser]: Found 1 translation units. [2020-07-11 02:27:32,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down-2.c [2020-07-11 02:27:32,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c9bda42/2209ba3de5ec438698297b7b344f6616/FLAG4dc133df1 [2020-07-11 02:27:32,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c9bda42/2209ba3de5ec438698297b7b344f6616 [2020-07-11 02:27:32,658 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-11 02:27:32,660 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-11 02:27:32,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-11 02:27:32,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-11 02:27:32,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-11 02:27:32,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 02:27:32" (1/1) ... [2020-07-11 02:27:32,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb7f1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:27:32, skipping insertion in model container [2020-07-11 02:27:32,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 02:27:32" (1/1) ... [2020-07-11 02:27:32,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-11 02:27:32,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-11 02:27:32,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 02:27:32,884 INFO L203 MainTranslator]: Completed pre-run [2020-07-11 02:27:32,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 02:27:32,920 INFO L208 MainTranslator]: Completed translation [2020-07-11 02:27:32,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:27:32 WrapperNode [2020-07-11 02:27:32,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-11 02:27:32,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-11 02:27:32,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-11 02:27:32,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-11 02:27:32,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:27:32" (1/1) ... [2020-07-11 02:27:32,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:27:32" (1/1) ... [2020-07-11 02:27:32,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:27:32" (1/1) ... [2020-07-11 02:27:32,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:27:32" (1/1) ... [2020-07-11 02:27:32,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:27:32" (1/1) ... [2020-07-11 02:27:32,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:27:32" (1/1) ... [2020-07-11 02:27:32,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:27:32" (1/1) ... [2020-07-11 02:27:33,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-11 02:27:33,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-11 02:27:33,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-11 02:27:33,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-11 02:27:33,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:27:32" (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 [2020-07-11 02:27:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-11 02:27:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-11 02:27:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-11 02:27:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-11 02:27:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-11 02:27:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-11 02:27:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-11 02:27:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-11 02:27:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-11 02:27:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-11 02:27:33,379 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-11 02:27:33,380 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-11 02:27:33,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 02:27:33 BoogieIcfgContainer [2020-07-11 02:27:33,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-11 02:27:33,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-11 02:27:33,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-11 02:27:33,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-11 02:27:33,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 02:27:32" (1/3) ... [2020-07-11 02:27:33,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466f00ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 02:27:33, skipping insertion in model container [2020-07-11 02:27:33,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:27:32" (2/3) ... [2020-07-11 02:27:33,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466f00ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 02:27:33, skipping insertion in model container [2020-07-11 02:27:33,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 02:27:33" (3/3) ... [2020-07-11 02:27:33,397 INFO L109 eAbstractionObserver]: Analyzing ICFG count_up_down-2.c [2020-07-11 02:27:33,412 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-11 02:27:33,422 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-11 02:27:33,444 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-11 02:27:33,470 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-11 02:27:33,470 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-11 02:27:33,471 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-11 02:27:33,471 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-11 02:27:33,471 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-11 02:27:33,471 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-11 02:27:33,471 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-11 02:27:33,471 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-11 02:27:33,490 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-11 02:27:33,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-11 02:27:33,510 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 02:27:33,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 02:27:33,512 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 02:27:33,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 02:27:33,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1049095342, now seen corresponding path program 1 times [2020-07-11 02:27:33,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 02:27:33,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887371415] [2020-07-11 02:27:33,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 02:27:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:27:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:27:33,673 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#true} assume true; {29#true} is VALID [2020-07-11 02:27:33,674 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {29#true} {29#true} #40#return; {29#true} is VALID [2020-07-11 02:27:33,675 INFO L263 TraceCheckUtils]: 0: Hoare triple {29#true} call ULTIMATE.init(); {29#true} is VALID [2020-07-11 02:27:33,676 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#true} assume true; {29#true} is VALID [2020-07-11 02:27:33,676 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {29#true} {29#true} #40#return; {29#true} is VALID [2020-07-11 02:27:33,676 INFO L263 TraceCheckUtils]: 3: Hoare triple {29#true} call #t~ret3 := main(); {29#true} is VALID [2020-07-11 02:27:33,677 INFO L280 TraceCheckUtils]: 4: Hoare triple {29#true} ~n~0 := #t~nondet0; {29#true} is VALID [2020-07-11 02:27:33,677 INFO L280 TraceCheckUtils]: 5: Hoare triple {29#true} havoc #t~nondet0; {29#true} is VALID [2020-07-11 02:27:33,678 INFO L280 TraceCheckUtils]: 6: Hoare triple {29#true} ~x~0 := ~n~0; {29#true} is VALID [2020-07-11 02:27:33,678 INFO L280 TraceCheckUtils]: 7: Hoare triple {29#true} ~y~0 := 0; {29#true} is VALID [2020-07-11 02:27:33,686 INFO L280 TraceCheckUtils]: 8: Hoare triple {29#true} assume !true; {30#false} is VALID [2020-07-11 02:27:33,686 INFO L263 TraceCheckUtils]: 9: Hoare triple {30#false} call __VERIFIER_assert((if ~y~0 % 4294967296 != ~n~0 % 4294967296 then 1 else 0)); {30#false} is VALID [2020-07-11 02:27:33,687 INFO L280 TraceCheckUtils]: 10: Hoare triple {30#false} ~cond := #in~cond; {30#false} is VALID [2020-07-11 02:27:33,687 INFO L280 TraceCheckUtils]: 11: Hoare triple {30#false} assume 0 == ~cond; {30#false} is VALID [2020-07-11 02:27:33,688 INFO L280 TraceCheckUtils]: 12: Hoare triple {30#false} assume !false; {30#false} is VALID [2020-07-11 02:27:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-11 02:27:33,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887371415] [2020-07-11 02:27:33,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-11 02:27:33,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-11 02:27:33,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380814302] [2020-07-11 02:27:33,709 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-11 02:27:33,712 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-11 02:27:33,716 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-11 02:27:33,763 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:27:33,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-11 02:27:33,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-11 02:27:33,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-11 02:27:33,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-11 02:27:33,775 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-07-11 02:27:33,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:27:33,898 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-07-11 02:27:33,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-11 02:27:33,899 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-11 02:27:33,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-11 02:27:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-11 02:27:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 40 transitions. [2020-07-11 02:27:33,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-11 02:27:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 40 transitions. [2020-07-11 02:27:33,921 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 40 transitions. [2020-07-11 02:27:33,997 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:27:34,009 INFO L225 Difference]: With dead ends: 37 [2020-07-11 02:27:34,010 INFO L226 Difference]: Without dead ends: 20 [2020-07-11 02:27:34,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-11 02:27:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-11 02:27:34,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-11 02:27:34,071 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-11 02:27:34,072 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand 20 states. [2020-07-11 02:27:34,073 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-11 02:27:34,073 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-11 02:27:34,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:27:34,077 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-07-11 02:27:34,078 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-07-11 02:27:34,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:27:34,078 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:27:34,079 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-11 02:27:34,079 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-11 02:27:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:27:34,083 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-07-11 02:27:34,083 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-07-11 02:27:34,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:27:34,084 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:27:34,084 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-11 02:27:34,085 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-11 02:27:34,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-11 02:27:34,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-07-11 02:27:34,089 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2020-07-11 02:27:34,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-11 02:27:34,090 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-07-11 02:27:34,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-11 02:27:34,090 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 20 states and 20 transitions. [2020-07-11 02:27:34,124 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:27:34,124 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-07-11 02:27:34,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-11 02:27:34,125 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 02:27:34,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 02:27:34,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-11 02:27:34,126 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 02:27:34,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 02:27:34,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1039860132, now seen corresponding path program 1 times [2020-07-11 02:27:34,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 02:27:34,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720479951] [2020-07-11 02:27:34,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 02:27:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-11 02:27:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-11 02:27:34,195 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-11 02:27:34,196 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-11 02:27:34,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-11 02:27:34,217 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-11 02:27:34,218 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-11 02:27:34,218 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-11 02:27:34,218 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-11 02:27:34,218 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-11 02:27:34,218 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-11 02:27:34,218 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 02:27:34,218 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 02:27:34,219 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-11 02:27:34,219 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-11 02:27:34,219 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-11 02:27:34,219 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-11 02:27:34,219 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-11 02:27:34,219 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-11 02:27:34,220 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-11 02:27:34,220 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-11 02:27:34,220 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-11 02:27:34,220 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-11 02:27:34,220 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-11 02:27:34,220 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-11 02:27:34,220 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-11 02:27:34,221 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-11 02:27:34,221 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2020-07-11 02:27:34,221 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2020-07-11 02:27:34,221 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-11 02:27:34,221 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-11 02:27:34,221 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-11 02:27:34,221 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-11 02:27:34,222 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-11 02:27:34,222 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2020-07-11 02:27:34,222 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-11 02:27:34,222 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-11 02:27:34,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.07 02:27:34 BoogieIcfgContainer [2020-07-11 02:27:34,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-11 02:27:34,230 INFO L168 Benchmark]: Toolchain (without parser) took 1569.05 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 99.8 MB in the beginning and 113.1 MB in the end (delta: -13.4 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. [2020-07-11 02:27:34,231 INFO L168 Benchmark]: CDTParser took 1.14 ms. Allocated memory is still 135.3 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-11 02:27:34,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.42 ms. Allocated memory is still 135.3 MB. Free memory was 99.5 MB in the beginning and 89.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-11 02:27:34,233 INFO L168 Benchmark]: Boogie Preprocessor took 124.17 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 89.9 MB in the beginning and 178.9 MB in the end (delta: -89.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-11 02:27:34,234 INFO L168 Benchmark]: RCFGBuilder took 341.32 ms. Allocated memory is still 199.8 MB. Free memory was 178.9 MB in the beginning and 164.4 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-11 02:27:34,234 INFO L168 Benchmark]: TraceAbstraction took 836.86 ms. Allocated memory is still 199.8 MB. Free memory was 163.7 MB in the beginning and 113.1 MB in the end (delta: 50.5 MB). Peak memory consumption was 50.5 MB. Max. memory is 7.1 GB. [2020-07-11 02:27:34,238 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 1.14 ms. Allocated memory is still 135.3 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.42 ms. Allocated memory is still 135.3 MB. Free memory was 99.5 MB in the beginning and 89.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.17 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 89.9 MB in the beginning and 178.9 MB in the end (delta: -89.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 341.32 ms. Allocated memory is still 199.8 MB. Free memory was 178.9 MB in the beginning and 164.4 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 836.86 ms. Allocated memory is still 199.8 MB. Free memory was 163.7 MB in the beginning and 113.1 MB in the end (delta: 50.5 MB). Peak memory consumption was 50.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int n = __VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=0, n=0] [L14] unsigned int x=n, y=0; VAL [n=0, x=0, y=0] [L15] COND FALSE !(x>0) VAL [n=0, x=0, y=0] [L20] CALL __VERIFIER_assert(y!=n) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...