java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:08:33,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:08:33,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:08:33,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:08:33,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:08:33,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:08:33,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:08:33,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:08:33,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:08:33,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:08:33,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:08:33,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:08:33,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:08:33,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:08:33,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:08:33,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:08:33,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:08:33,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:08:33,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:08:33,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:08:33,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:08:33,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:08:33,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:08:33,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:08:33,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:08:33,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:08:33,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:08:33,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:08:33,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:08:33,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:08:33,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:08:33,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:08:33,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:08:33,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:08:33,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:08:33,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:08:33,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:08:33,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:08:33,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:08:33,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:08:33,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:08:33,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:08:33,370 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:08:33,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:08:33,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:08:33,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:08:33,376 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:08:33,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:08:33,376 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:08:33,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:08:33,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:08:33,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:08:33,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:08:33,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:08:33,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:08:33,377 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:08:33,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:08:33,378 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:08:33,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:08:33,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:08:33,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:08:33,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:08:33,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:08:33,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:08:33,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:08:33,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:08:33,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:08:33,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:08:33,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:08:33,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:08:33,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:08:33,671 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:08:33,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:08:33,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:08:33,689 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:08:33,690 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:08:33,690 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test09.c [2019-10-14 23:08:33,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79282e968/6aa069c855f64e4881adea0dc97243a9/FLAG0e0a70c92 [2019-10-14 23:08:34,252 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:08:34,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test09.c [2019-10-14 23:08:34,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79282e968/6aa069c855f64e4881adea0dc97243a9/FLAG0e0a70c92 [2019-10-14 23:08:34,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79282e968/6aa069c855f64e4881adea0dc97243a9 [2019-10-14 23:08:34,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:08:34,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:08:34,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:34,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:08:34,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:08:34,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:34,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@372c657e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34, skipping insertion in model container [2019-10-14 23:08:34,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:34,657 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:08:34,678 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:08:34,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:34,876 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:08:34,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:34,916 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:08:34,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34 WrapperNode [2019-10-14 23:08:34,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:34,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:08:34,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:08:34,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:08:35,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:35,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:35,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:35,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:35,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:35,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:35,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:35,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:08:35,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:08:35,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:08:35,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:08:35,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (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 [2019-10-14 23:08:35,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:08:35,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:08:35,089 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-10-14 23:08:35,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:08:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:08:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-10-14 23:08:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:08:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:08:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:08:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:08:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:08:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:08:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:08:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:08:35,301 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:08:35,302 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:08:35,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:35 BoogieIcfgContainer [2019-10-14 23:08:35,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:08:35,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:08:35,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:08:35,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:08:35,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:08:34" (1/3) ... [2019-10-14 23:08:35,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b03751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:35, skipping insertion in model container [2019-10-14 23:08:35,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (2/3) ... [2019-10-14 23:08:35,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b03751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:35, skipping insertion in model container [2019-10-14 23:08:35,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:35" (3/3) ... [2019-10-14 23:08:35,312 INFO L109 eAbstractionObserver]: Analyzing ICFG test09.c [2019-10-14 23:08:35,325 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:08:35,335 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:08:35,356 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:08:35,387 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:08:35,387 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:08:35,388 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:08:35,388 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:08:35,388 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:08:35,388 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:08:35,389 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:08:35,389 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:08:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-14 23:08:35,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 23:08:35,417 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:35,418 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:35,421 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:35,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:35,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1889415219, now seen corresponding path program 1 times [2019-10-14 23:08:35,438 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:35,439 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787562862] [2019-10-14 23:08:35,439 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:35,439 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:35,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:08:35,855 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787562862] [2019-10-14 23:08:35,856 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:35,857 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:08:35,860 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045429075] [2019-10-14 23:08:35,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:08:35,869 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:35,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:08:35,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:08:35,888 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 6 states. [2019-10-14 23:08:36,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:36,114 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2019-10-14 23:08:36,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:08:36,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-10-14 23:08:36,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:36,130 INFO L225 Difference]: With dead ends: 33 [2019-10-14 23:08:36,130 INFO L226 Difference]: Without dead ends: 15 [2019-10-14 23:08:36,137 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:08:36,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-14 23:08:36,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-14 23:08:36,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-14 23:08:36,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-10-14 23:08:36,201 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2019-10-14 23:08:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:36,202 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-10-14 23:08:36,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:08:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-10-14 23:08:36,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 23:08:36,204 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:36,204 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:36,205 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:36,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1918044370, now seen corresponding path program 1 times [2019-10-14 23:08:36,207 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:36,207 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780240684] [2019-10-14 23:08:36,207 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:36,208 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:36,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:08:36,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780240684] [2019-10-14 23:08:36,608 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:36,608 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:08:36,609 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130842445] [2019-10-14 23:08:36,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:08:36,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:36,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:08:36,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:08:36,612 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 8 states. [2019-10-14 23:08:36,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:36,884 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2019-10-14 23:08:36,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:08:36,885 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-10-14 23:08:36,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:36,885 INFO L225 Difference]: With dead ends: 15 [2019-10-14 23:08:36,886 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:08:36,887 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:08:36,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:08:36,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:08:36,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:08:36,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:08:36,888 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-14 23:08:36,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:36,889 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:08:36,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:08:36,889 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:08:36,889 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:08:36,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:08:37,098 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:08:37,099 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= ~p2~0.offset |old(~p2~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= ~p2~0.base |old(~p2~0.base)|) (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|)) [2019-10-14 23:08:37,099 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:08:37,099 INFO L443 ceAbstractionStarter]: For program point L9(lines 9 14) no Hoare annotation was computed. [2019-10-14 23:08:37,100 INFO L443 ceAbstractionStarter]: For program point fEXIT(lines 7 15) no Hoare annotation was computed. [2019-10-14 23:08:37,100 INFO L439 ceAbstractionStarter]: At program point fENTRY(lines 7 15) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= 1 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset))) (and (= |~#a~0.base| ~p1~0.base) (= ~p1~0.offset |old(~p1~0.offset)|)) (not (= |~#a~0.offset| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |~#a~0.base|))) [2019-10-14 23:08:37,102 INFO L443 ceAbstractionStarter]: For program point fFINAL(lines 7 15) no Hoare annotation was computed. [2019-10-14 23:08:37,102 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:08:37,102 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= ~p2~0.offset ~p1~0.offset) (= ~p2~0.base ~p1~0.base)) [2019-10-14 23:08:37,102 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:08:37,103 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:08:37,103 INFO L439 ceAbstractionStarter]: At program point L32(lines 17 39) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|))) [2019-10-14 23:08:37,103 INFO L443 ceAbstractionStarter]: For program point L31(lines 31 33) no Hoare annotation was computed. [2019-10-14 23:08:37,103 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 37) no Hoare annotation was computed. [2019-10-14 23:08:37,103 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 17 39) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|)) (and (= ~p2~0.offset |old(~p2~0.offset)|) (= ~p2~0.base |old(~p2~0.base)|) (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p2~0.base ~p1~0.base))) [2019-10-14 23:08:37,104 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 17 39) no Hoare annotation was computed. [2019-10-14 23:08:37,104 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (or (and (= 1 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset)) (= ~p1~0.offset |~#a~0.offset|) (= |~#a~0.base| ~p1~0.base)) (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|))) [2019-10-14 23:08:37,105 INFO L443 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-10-14 23:08:37,105 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 39) no Hoare annotation was computed. [2019-10-14 23:08:37,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:08:37 BoogieIcfgContainer [2019-10-14 23:08:37,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:08:37,144 INFO L168 Benchmark]: Toolchain (without parser) took 2502.07 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 101.8 MB in the beginning and 140.9 MB in the end (delta: -39.1 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:37,146 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:08:37,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.38 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 91.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:37,150 INFO L168 Benchmark]: Boogie Preprocessor took 117.69 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 91.8 MB in the beginning and 181.2 MB in the end (delta: -89.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:37,151 INFO L168 Benchmark]: RCFGBuilder took 265.43 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 167.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:37,153 INFO L168 Benchmark]: TraceAbstraction took 1834.72 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 166.4 MB in the beginning and 140.9 MB in the end (delta: 25.5 MB). Peak memory consumption was 58.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:37,164 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.38 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 91.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.69 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 91.8 MB in the beginning and 181.2 MB in the end (delta: -89.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.43 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 167.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1834.72 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 166.4 MB in the beginning and 140.9 MB in the end (delta: 25.5 MB). Peak memory consumption was 58.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 37]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (a == b || !(\old(p2) == \old(p1))) || !(\old(p1) == \old(p2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 20 SDtfs, 13 SDslu, 36 SDs, 0 SdLazy, 67 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 139 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 85 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 2990 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...