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/test06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:34:18,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:34:18,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:34:18,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:34:18,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:34:18,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:34:18,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:34:18,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:34:18,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:34:18,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:34:18,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:34:18,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:34:18,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:34:18,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:34:18,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:34:18,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:34:18,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:34:18,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:34:18,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:34:18,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:34:18,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:34:18,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:34:18,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:34:18,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:34:18,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 01:34:18,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 01:34:18,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 01:34:18,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 01:34:18,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 01:34:18,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 01:34:18,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:34:18,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:34:18,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:34:18,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:34:18,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:34:18,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:34:18,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:34:18,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:34:18,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:34:18,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:34:18,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:34:18,691 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 [2019-09-08 01:34:18,722 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:34:18,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:34:18,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:34:18,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:34:18,725 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:34:18,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:34:18,726 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:34:18,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:34:18,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:34:18,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:34:18,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:34:18,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:34:18,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:34:18,728 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:34:18,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:34:18,729 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:34:18,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:34:18,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:34:18,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:34:18,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:34:18,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:34:18,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:34:18,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:34:18,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:34:18,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:34:18,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:34:18,732 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:34:18,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:34:18,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:34:18,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:34:18,801 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:34:18,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:34:18,806 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:34:18,807 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:34:18,807 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test06.c [2019-09-08 01:34:18,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae843ae6/36e838ca334b4339b3ef8fabf57fe1e9/FLAG708b57921 [2019-09-08 01:34:19,304 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:34:19,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test06.c [2019-09-08 01:34:19,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae843ae6/36e838ca334b4339b3ef8fabf57fe1e9/FLAG708b57921 [2019-09-08 01:34:19,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae843ae6/36e838ca334b4339b3ef8fabf57fe1e9 [2019-09-08 01:34:19,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:34:19,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:34:19,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:34:19,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:34:19,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:34:19,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:34:19" (1/1) ... [2019-09-08 01:34:19,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b0bf5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:34:19, skipping insertion in model container [2019-09-08 01:34:19,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:34:19" (1/1) ... [2019-09-08 01:34:19,695 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:34:19,716 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:34:19,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:34:19,893 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:34:19,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:34:19,930 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:34:19,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:34:19 WrapperNode [2019-09-08 01:34:19,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:34:19,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:34:19,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:34:19,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:34:20,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:34:19" (1/1) ... [2019-09-08 01:34:20,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:34:19" (1/1) ... [2019-09-08 01:34:20,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:34:19" (1/1) ... [2019-09-08 01:34:20,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:34:19" (1/1) ... [2019-09-08 01:34:20,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:34:19" (1/1) ... [2019-09-08 01:34:20,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:34:19" (1/1) ... [2019-09-08 01:34:20,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:34:19" (1/1) ... [2019-09-08 01:34:20,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:34:20,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:34:20,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:34:20,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:34:20,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:34:19" (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 [2019-09-08 01:34:20,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:34:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:34:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-09-08 01:34:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-09-08 01:34:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:34:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:34:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-09-08 01:34:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-08 01:34:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-08 01:34:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:34:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-09-08 01:34:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:34:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:34:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:34:20,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:34:20,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:34:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:34:20,529 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:34:20,529 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 01:34:20,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:34:20 BoogieIcfgContainer [2019-09-08 01:34:20,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:34:20,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:34:20,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:34:20,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:34:20,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:34:19" (1/3) ... [2019-09-08 01:34:20,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2251b495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:34:20, skipping insertion in model container [2019-09-08 01:34:20,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:34:19" (2/3) ... [2019-09-08 01:34:20,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2251b495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:34:20, skipping insertion in model container [2019-09-08 01:34:20,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:34:20" (3/3) ... [2019-09-08 01:34:20,540 INFO L109 eAbstractionObserver]: Analyzing ICFG test06.c [2019-09-08 01:34:20,551 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:34:20,558 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:34:20,578 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:34:20,609 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:34:20,609 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:34:20,609 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:34:20,610 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:34:20,610 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:34:20,610 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:34:20,610 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:34:20,610 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:34:20,610 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:34:20,626 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-08 01:34:20,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-08 01:34:20,635 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:34:20,636 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:34:20,638 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:34:20,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:34:20,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1199829752, now seen corresponding path program 1 times [2019-09-08 01:34:20,644 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:34:20,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:34:20,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:34:20,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:34:20,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:34:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:34:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:34:20,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:34:20,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 01:34:20,889 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 01:34:20,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 01:34:20,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 01:34:20,904 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2019-09-08 01:34:20,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:34:20,971 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2019-09-08 01:34:20,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 01:34:20,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-08 01:34:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:34:20,984 INFO L225 Difference]: With dead ends: 34 [2019-09-08 01:34:20,984 INFO L226 Difference]: Without dead ends: 20 [2019-09-08 01:34:20,988 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 01:34:21,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-08 01:34:21,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-09-08 01:34:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-08 01:34:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2019-09-08 01:34:21,032 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 14 [2019-09-08 01:34:21,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:34:21,032 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2019-09-08 01:34:21,033 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 01:34:21,033 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2019-09-08 01:34:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-08 01:34:21,034 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:34:21,034 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:34:21,035 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:34:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:34:21,038 INFO L82 PathProgramCache]: Analyzing trace with hash -2114164890, now seen corresponding path program 1 times [2019-09-08 01:34:21,038 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:34:21,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:34:21,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:34:21,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:34:21,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:34:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:34:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:34:21,352 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:34:21,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:34:21 BoogieIcfgContainer [2019-09-08 01:34:21,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:34:21,401 INFO L168 Benchmark]: Toolchain (without parser) took 1721.88 ms. Allocated memory was 135.3 MB in the beginning and 200.8 MB in the end (delta: 65.5 MB). Free memory was 87.6 MB in the beginning and 117.4 MB in the end (delta: -29.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:34:21,402 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 135.3 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:34:21,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.09 ms. Allocated memory is still 135.3 MB. Free memory was 87.4 MB in the beginning and 77.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:34:21,405 INFO L168 Benchmark]: Boogie Preprocessor took 166.25 ms. Allocated memory was 135.3 MB in the beginning and 200.8 MB in the end (delta: 65.5 MB). Free memory was 77.6 MB in the beginning and 178.3 MB in the end (delta: -100.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:34:21,406 INFO L168 Benchmark]: RCFGBuilder took 431.78 ms. Allocated memory is still 200.8 MB. Free memory was 177.7 MB in the beginning and 159.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2019-09-08 01:34:21,407 INFO L168 Benchmark]: TraceAbstraction took 865.61 ms. Allocated memory is still 200.8 MB. Free memory was 159.2 MB in the beginning and 117.4 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:34:21,413 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 135.3 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.09 ms. Allocated memory is still 135.3 MB. Free memory was 87.4 MB in the beginning and 77.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.25 ms. Allocated memory was 135.3 MB in the beginning and 200.8 MB in the end (delta: 65.5 MB). Free memory was 77.6 MB in the beginning and 178.3 MB in the end (delta: -100.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 431.78 ms. Allocated memory is still 200.8 MB. Free memory was 177.7 MB in the beginning and 159.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 865.61 ms. Allocated memory is still 200.8 MB. Free memory was 159.2 MB in the beginning and 117.4 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 40]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int a, b; [L22] int *p1, *p2; [L24] p1 = &a [L25] p2 = &b [L27] b = 1 [L28] a = 5 [L30] EXPR \read(a) [L30] a-- [L32] EXPR \read(a) VAL [\read(a)=4, a={-1:0}, b={-2:0}, p1={1:0}, p2={-3:0}] [L32] CALL, EXPR f(a, &p1, &p2) VAL [\old(a)=4, p1={1:0}, p2={-3:0}] [L12] COND TRUE a == 4 VAL [\old(a)=4, a=4, p1={1:0}, p1={1:0}, p2={-3:0}, p2={-3:0}] [L13] CALL g(p1, p2) VAL [p1={1:0}, p2={-3:0}] [L5] EXPR \read(**p2) [L5] int *pq = *p2; [L7] EXPR \read(**p2) [L7] *p1 = *p2 [L8] *pq = 0 VAL [p1={1:0}, p1={1:0}, p2={-3:0}, p2={-3:0}, pq={-2:0}] [L13] RET g(p1, p2) VAL [\old(a)=4, a=4, p1={1:0}, p1={1:0}, p2={-3:0}, p2={-3:0}] [L14] return 1; VAL [\old(a)=4, \result=1, a=4, p1={1:0}, p1={1:0}, p2={-3:0}, p2={-3:0}] [L32] RET, EXPR f(a, &p1, &p2) VAL [\read(a)=4, a={-1:0}, b={-2:0}, f(a, &p1, &p2)=1, p1={1:0}, p2={-3:0}] [L32] a = f(a, &p1, &p2) [L34] EXPR \read(*p1) VAL [\read(*p1)={-2:0}, \read(*p1)=0, a={-1:0}, b={-2:0}, p1={1:0}, p2={-3:0}] [L34] COND TRUE *p1 == 0 [L40] __VERIFIER_error() VAL [a={-1:0}, b={-2:0}, p1={1:0}, p2={-3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 5 SDslu, 53 SDs, 0 SdLazy, 13 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 299 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...