/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/multivar_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 20:22:32,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 20:22:32,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 20:22:32,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 20:22:32,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 20:22:32,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 20:22:32,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 20:22:32,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 20:22:32,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 20:22:32,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 20:22:32,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 20:22:32,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 20:22:32,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 20:22:32,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 20:22:32,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 20:22:32,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 20:22:32,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 20:22:32,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 20:22:32,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 20:22:32,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 20:22:32,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 20:22:32,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 20:22:32,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 20:22:32,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 20:22:32,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 20:22:32,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 20:22:32,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 20:22:32,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 20:22:32,999 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-10 20:22:33,008 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 20:22:33,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 20:22:33,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 20:22:33,009 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 20:22:33,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 20:22:33,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 20:22:33,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 20:22:33,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 20:22:33,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 20:22:33,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 20:22:33,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 20:22:33,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 20:22:33,011 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 20:22:33,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 20:22:33,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 20:22:33,012 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 20:22:33,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 20:22:33,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 20:22:33,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 20:22:33,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 20:22:33,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 20:22:33,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 20:22:33,013 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 20:22:33,284 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 20:22:33,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 20:22:33,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 20:22:33,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 20:22:33,304 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 20:22:33,305 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2020-07-10 20:22:33,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a65e216/791522a6a9e44e07b8bb5cea13c73220/FLAGa5c33147f [2020-07-10 20:22:33,853 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 20:22:33,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2020-07-10 20:22:33,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a65e216/791522a6a9e44e07b8bb5cea13c73220/FLAGa5c33147f [2020-07-10 20:22:34,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a65e216/791522a6a9e44e07b8bb5cea13c73220 [2020-07-10 20:22:34,226 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 20:22:34,228 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 20:22:34,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 20:22:34,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 20:22:34,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 20:22:34,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:22:34" (1/1) ... [2020-07-10 20:22:34,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7449ceae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:34, skipping insertion in model container [2020-07-10 20:22:34,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:22:34" (1/1) ... [2020-07-10 20:22:34,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 20:22:34,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 20:22:34,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:22:34,483 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 20:22:34,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:22:34,521 INFO L208 MainTranslator]: Completed translation [2020-07-10 20:22:34,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:34 WrapperNode [2020-07-10 20:22:34,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 20:22:34,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 20:22:34,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 20:22:34,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 20:22:34,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:34" (1/1) ... [2020-07-10 20:22:34,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:34" (1/1) ... [2020-07-10 20:22:34,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:34" (1/1) ... [2020-07-10 20:22:34,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:34" (1/1) ... [2020-07-10 20:22:34,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:34" (1/1) ... [2020-07-10 20:22:34,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:34" (1/1) ... [2020-07-10 20:22:34,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:34" (1/1) ... [2020-07-10 20:22:34,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 20:22:34,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 20:22:34,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 20:22:34,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 20:22:34,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:34" (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 [2020-07-10 20:22:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 20:22:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 20:22:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 20:22:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 20:22:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 20:22:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-10 20:22:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 20:22:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 20:22:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 20:22:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 20:22:34,996 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 20:22:34,996 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-10 20:22:35,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:22:35 BoogieIcfgContainer [2020-07-10 20:22:35,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 20:22:35,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 20:22:35,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 20:22:35,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 20:22:35,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 08:22:34" (1/3) ... [2020-07-10 20:22:35,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703710e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:22:35, skipping insertion in model container [2020-07-10 20:22:35,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:34" (2/3) ... [2020-07-10 20:22:35,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703710e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:22:35, skipping insertion in model container [2020-07-10 20:22:35,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:22:35" (3/3) ... [2020-07-10 20:22:35,010 INFO L109 eAbstractionObserver]: Analyzing ICFG multivar_1-2.c [2020-07-10 20:22:35,022 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 20:22:35,030 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 20:22:35,046 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 20:22:35,092 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 20:22:35,092 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 20:22:35,092 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 20:22:35,092 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 20:22:35,093 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 20:22:35,093 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 20:22:35,093 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 20:22:35,093 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 20:22:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-10 20:22:35,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-10 20:22:35,130 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:22:35,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:22:35,131 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:22:35,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:22:35,154 INFO L82 PathProgramCache]: Analyzing trace with hash 677098305, now seen corresponding path program 1 times [2020-07-10 20:22:35,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:22:35,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891675714] [2020-07-10 20:22:35,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:22:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:35,336 INFO L280 TraceCheckUtils]: 0: Hoare triple {28#true} assume true; {28#true} is VALID [2020-07-10 20:22:35,337 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {28#true} {28#true} #39#return; {28#true} is VALID [2020-07-10 20:22:35,340 INFO L263 TraceCheckUtils]: 0: Hoare triple {28#true} call ULTIMATE.init(); {28#true} is VALID [2020-07-10 20:22:35,342 INFO L280 TraceCheckUtils]: 1: Hoare triple {28#true} assume true; {28#true} is VALID [2020-07-10 20:22:35,342 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {28#true} {28#true} #39#return; {28#true} is VALID [2020-07-10 20:22:35,343 INFO L263 TraceCheckUtils]: 3: Hoare triple {28#true} call #t~ret3 := main(); {28#true} is VALID [2020-07-10 20:22:35,343 INFO L280 TraceCheckUtils]: 4: Hoare triple {28#true} ~x~0 := #t~nondet0; {28#true} is VALID [2020-07-10 20:22:35,344 INFO L280 TraceCheckUtils]: 5: Hoare triple {28#true} havoc #t~nondet0; {28#true} is VALID [2020-07-10 20:22:35,344 INFO L280 TraceCheckUtils]: 6: Hoare triple {28#true} ~y~0 := 1 + ~x~0; {28#true} is VALID [2020-07-10 20:22:35,346 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#true} assume !true; {29#false} is VALID [2020-07-10 20:22:35,347 INFO L263 TraceCheckUtils]: 8: Hoare triple {29#false} call __VERIFIER_assert((if ~x~0 % 4294967296 == ~y~0 % 4294967296 then 1 else 0)); {29#false} is VALID [2020-07-10 20:22:35,347 INFO L280 TraceCheckUtils]: 9: Hoare triple {29#false} ~cond := #in~cond; {29#false} is VALID [2020-07-10 20:22:35,347 INFO L280 TraceCheckUtils]: 10: Hoare triple {29#false} assume 0 == ~cond; {29#false} is VALID [2020-07-10 20:22:35,348 INFO L280 TraceCheckUtils]: 11: Hoare triple {29#false} assume !false; {29#false} is VALID [2020-07-10 20:22:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 20:22:35,350 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:22:35,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891675714] [2020-07-10 20:22:35,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 20:22:35,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-10 20:22:35,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015674185] [2020-07-10 20:22:35,369 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-10 20:22:35,376 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 20:22:35,381 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-10 20:22:35,430 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:35,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-10 20:22:35,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 20:22:35,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-10 20:22:35,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 20:22:35,443 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-07-10 20:22:35,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:35,538 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-07-10 20:22:35,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-10 20:22:35,539 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-10 20:22:35,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 20:22:35,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 20:22:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2020-07-10 20:22:35,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 20:22:35,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2020-07-10 20:22:35,557 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 39 transitions. [2020-07-10 20:22:35,637 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:35,649 INFO L225 Difference]: With dead ends: 36 [2020-07-10 20:22:35,650 INFO L226 Difference]: Without dead ends: 19 [2020-07-10 20:22:35,654 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 [2020-07-10 20:22:35,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-10 20:22:35,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-10 20:22:35,707 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 20:22:35,708 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2020-07-10 20:22:35,708 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-10 20:22:35,709 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-10 20:22:35,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:35,713 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-10 20:22:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-10 20:22:35,714 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:35,714 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:35,715 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-10 20:22:35,715 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-10 20:22:35,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:35,719 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-10 20:22:35,720 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-10 20:22:35,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:35,720 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:35,721 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 20:22:35,721 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 20:22:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-10 20:22:35,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-10 20:22:35,726 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2020-07-10 20:22:35,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 20:22:35,727 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-10 20:22:35,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-10 20:22:35,727 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 19 states and 19 transitions. [2020-07-10 20:22:35,763 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-10 20:22:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-10 20:22:35,764 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:22:35,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:22:35,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 20:22:35,765 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:22:35,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:22:35,766 INFO L82 PathProgramCache]: Analyzing trace with hash 667863095, now seen corresponding path program 1 times [2020-07-10 20:22:35,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:22:35,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135341599] [2020-07-10 20:22:35,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:22:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 20:22:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 20:22:35,845 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:22:35,846 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-10 20:22:35,846 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-10 20:22:35,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 20:22:35,861 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 20:22:35,861 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 20:22:35,861 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 20:22:35,861 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-10 20:22:35,861 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-10 20:22:35,862 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 20:22:35,862 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 20:22:35,862 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 20:22:35,862 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-10 20:22:35,862 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-10 20:22:35,862 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-10 20:22:35,863 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 20:22:35,863 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-10 20:22:35,863 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-10 20:22:35,863 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-10 20:22:35,863 WARN L170 areAnnotationChecker]: L5-2 has no Hoare annotation [2020-07-10 20:22:35,864 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-10 20:22:35,864 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-10 20:22:35,864 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-10 20:22:35,864 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 20:22:35,864 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2020-07-10 20:22:35,864 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2020-07-10 20:22:35,865 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-10 20:22:35,865 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 20:22:35,865 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-10 20:22:35,865 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 20:22:35,865 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2020-07-10 20:22:35,865 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-10 20:22:35,865 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-10 20:22:35,866 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-10 20:22:35,866 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. [2020-07-10 20:22:35,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 08:22:35 BoogieIcfgContainer [2020-07-10 20:22:35,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 20:22:35,873 INFO L168 Benchmark]: Toolchain (without parser) took 1644.21 ms. Allocated memory was 137.4 MB in the beginning and 206.6 MB in the end (delta: 69.2 MB). Free memory was 101.2 MB in the beginning and 119.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:35,874 INFO L168 Benchmark]: CDTParser took 0.99 ms. Allocated memory is still 137.4 MB. Free memory is still 119.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-10 20:22:35,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.03 ms. Allocated memory is still 137.4 MB. Free memory was 100.8 MB in the beginning and 91.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:35,876 INFO L168 Benchmark]: Boogie Preprocessor took 188.56 ms. Allocated memory was 137.4 MB in the beginning and 206.6 MB in the end (delta: 69.2 MB). Free memory was 91.3 MB in the beginning and 185.5 MB in the end (delta: -94.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:35,877 INFO L168 Benchmark]: RCFGBuilder took 289.83 ms. Allocated memory is still 206.6 MB. Free memory was 185.5 MB in the beginning and 170.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:35,878 INFO L168 Benchmark]: TraceAbstraction took 867.59 ms. Allocated memory is still 206.6 MB. Free memory was 170.8 MB in the beginning and 119.6 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:35,881 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 0.99 ms. Allocated memory is still 137.4 MB. Free memory is still 119.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 292.03 ms. Allocated memory is still 137.4 MB. Free memory was 100.8 MB in the beginning and 91.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 188.56 ms. Allocated memory was 137.4 MB in the beginning and 206.6 MB in the end (delta: 69.2 MB). Free memory was 91.3 MB in the beginning and 185.5 MB in the end (delta: -94.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 289.83 ms. Allocated memory is still 206.6 MB. Free memory was 185.5 MB in the beginning and 170.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 867.59 ms. Allocated memory is still 206.6 MB. Free memory was 170.8 MB in the beginning and 119.6 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = __VERIFIER_nondet_uint(); [L13] unsigned int y = x + 1; [L15] COND FALSE !(x < 1024) [L20] CALL __VERIFIER_assert(x == y) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 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: 25 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=25occurred 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: No data available, 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...