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/test22-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:35:04,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:35:04,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:35:04,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 01:35:04,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:35:04,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:35:04,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:35:04,650 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 01:35:04,665 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:35:04,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:35:04,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:35:04,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:35:04,670 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:35:04,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:35:04,671 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:35:04,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:35:04,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:35:04,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:35:04,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:35:04,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:35:04,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:35:04,672 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:35:04,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:35:04,672 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:35:04,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:35:04,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:35:04,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:35:04,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:35:04,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:35:04,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:35:04,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:35:04,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:35:04,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:35:04,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:35:04,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:35:04,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:35:04,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:35:04,713 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:35:04,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:35:04,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:35:04,731 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:35:04,732 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:35:04,733 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2019-09-08 01:35:04,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7b915f71/f18faf7b766d4a17b4dc435996d625f5/FLAGb573fcd94 [2019-09-08 01:35:05,312 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:35:05,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-2.c [2019-09-08 01:35:05,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7b915f71/f18faf7b766d4a17b4dc435996d625f5/FLAGb573fcd94 [2019-09-08 01:35:05,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7b915f71/f18faf7b766d4a17b4dc435996d625f5 [2019-09-08 01:35:05,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:35:05,751 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:35:05,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:35:05,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:35:05,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:35:05,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:35:05" (1/1) ... [2019-09-08 01:35:05,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@401cba77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:35:05, skipping insertion in model container [2019-09-08 01:35:05,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:35:05" (1/1) ... [2019-09-08 01:35:05,770 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:35:05,790 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:35:06,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:35:06,057 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:35:06,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:35:06,216 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:35:06,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:35:06 WrapperNode [2019-09-08 01:35:06,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:35:06,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:35:06,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:35:06,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:35:06,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:35:06" (1/1) ... [2019-09-08 01:35:06,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:35:06" (1/1) ... [2019-09-08 01:35:06,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:35:06" (1/1) ... [2019-09-08 01:35:06,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:35:06" (1/1) ... [2019-09-08 01:35:06,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:35:06" (1/1) ... [2019-09-08 01:35:06,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:35:06" (1/1) ... [2019-09-08 01:35:06,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:35:06" (1/1) ... [2019-09-08 01:35:06,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:35:06,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:35:06,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:35:06,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:35:06,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:35:06" (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 01:35:06,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:35:06,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:35:06,369 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-08 01:35:06,369 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2019-09-08 01:35:06,369 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-08 01:35:06,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:35:06,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:35:06,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 01:35:06,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 01:35:06,370 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 01:35:06,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:35:06,370 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2019-09-08 01:35:06,371 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 01:35:06,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:35:06,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:35:06,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:35:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:35:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-08 01:35:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:35:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:35:06,717 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:35:06,717 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 01:35:06,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:35:06 BoogieIcfgContainer [2019-09-08 01:35:06,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:35:06,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:35:06,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:35:06,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:35:06,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:35:05" (1/3) ... [2019-09-08 01:35:06,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211c3ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:35:06, skipping insertion in model container [2019-09-08 01:35:06,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:35:06" (2/3) ... [2019-09-08 01:35:06,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211c3ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:35:06, skipping insertion in model container [2019-09-08 01:35:06,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:35:06" (3/3) ... [2019-09-08 01:35:06,727 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2019-09-08 01:35:06,736 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:35:06,743 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:35:06,763 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:35:06,796 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:35:06,796 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:35:06,796 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:35:06,797 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:35:06,797 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:35:06,797 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:35:06,797 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:35:06,797 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:35:06,798 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:35:06,814 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-09-08 01:35:06,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-08 01:35:06,820 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:35:06,821 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:35:06,823 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:35:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:35:06,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1345538594, now seen corresponding path program 1 times [2019-09-08 01:35:06,829 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:35:06,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:35:06,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:35:06,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:35:06,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:35:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:35:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-08 01:35:07,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:35:07,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:35:07,076 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:35:07,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:35:07,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:35:07,096 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-09-08 01:35:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:35:07,119 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2019-09-08 01:35:07,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:35:07,120 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2019-09-08 01:35:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:35:07,130 INFO L225 Difference]: With dead ends: 49 [2019-09-08 01:35:07,131 INFO L226 Difference]: Without dead ends: 31 [2019-09-08 01:35:07,134 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:35:07,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-09-08 01:35:07,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-09-08 01:35:07,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-08 01:35:07,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-09-08 01:35:07,183 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2019-09-08 01:35:07,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:35:07,185 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-09-08 01:35:07,185 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:35:07,186 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-09-08 01:35:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-08 01:35:07,188 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:35:07,188 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:35:07,189 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:35:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:35:07,189 INFO L82 PathProgramCache]: Analyzing trace with hash -213153012, now seen corresponding path program 1 times [2019-09-08 01:35:07,190 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:35:07,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:35:07,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:35:07,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:35:07,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:35:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:35:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 01:35:07,517 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:35:07,517 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 01:35:07,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:35:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:35:07,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 43 conjunts are in the unsatisfiable core [2019-09-08 01:35:07,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:35:08,041 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-09-08 01:35:08,043 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 01:35:08,056 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:35:08,057 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-08 01:35:08,057 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:5 [2019-09-08 01:35:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 01:35:08,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:35:08,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2019-09-08 01:35:08,100 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-08 01:35:08,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-08 01:35:08,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2019-09-08 01:35:08,102 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 20 states. [2019-09-08 01:35:08,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:35:08,833 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2019-09-08 01:35:08,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-08 01:35:08,834 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2019-09-08 01:35:08,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:35:08,838 INFO L225 Difference]: With dead ends: 69 [2019-09-08 01:35:08,838 INFO L226 Difference]: Without dead ends: 61 [2019-09-08 01:35:08,840 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2019-09-08 01:35:08,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-09-08 01:35:08,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2019-09-08 01:35:08,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-08 01:35:08,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2019-09-08 01:35:08,856 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 38 [2019-09-08 01:35:08,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:35:08,857 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-09-08 01:35:08,857 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-08 01:35:08,857 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2019-09-08 01:35:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-08 01:35:08,859 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:35:08,859 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:35:08,860 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:35:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:35:08,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1234221366, now seen corresponding path program 1 times [2019-09-08 01:35:08,861 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:35:08,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:35:08,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:35:08,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:35:08,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:35:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:35:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:35:08,990 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:35:09,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:35:09 BoogieIcfgContainer [2019-09-08 01:35:09,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:35:09,066 INFO L168 Benchmark]: Toolchain (without parser) took 3313.58 ms. Allocated memory was 132.6 MB in the beginning and 223.3 MB in the end (delta: 90.7 MB). Free memory was 87.1 MB in the beginning and 95.0 MB in the end (delta: -7.9 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:35:09,068 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 132.6 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:35:09,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.79 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 86.9 MB in the beginning and 176.7 MB in the end (delta: -89.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2019-09-08 01:35:09,072 INFO L168 Benchmark]: Boogie Preprocessor took 83.02 ms. Allocated memory is still 199.8 MB. Free memory was 176.7 MB in the beginning and 174.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:35:09,073 INFO L168 Benchmark]: RCFGBuilder took 417.09 ms. Allocated memory is still 199.8 MB. Free memory was 173.9 MB in the beginning and 156.4 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:35:09,075 INFO L168 Benchmark]: TraceAbstraction took 2342.74 ms. Allocated memory was 199.8 MB in the beginning and 223.3 MB in the end (delta: 23.6 MB). Free memory was 156.4 MB in the beginning and 95.0 MB in the end (delta: 61.4 MB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:35:09,079 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 132.6 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 465.79 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 86.9 MB in the beginning and 176.7 MB in the end (delta: -89.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.02 ms. Allocated memory is still 199.8 MB. Free memory was 176.7 MB in the beginning and 174.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 417.09 ms. Allocated memory is still 199.8 MB. Free memory was 173.9 MB in the beginning and 156.4 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2342.74 ms. Allocated memory was 199.8 MB in the beginning and 223.3 MB in the end (delta: 23.6 MB). Free memory was 156.4 MB in the beginning and 95.0 MB in the end (delta: 61.4 MB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; VAL [\old(d1)=23, \old(d1)=19, \old(d2)=20, \old(d2)=22, d1={-1:0}, d2={1:0}] [L32] CALL init() VAL [d1={-1:0}, d2={1:0}] [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L32] RET init() VAL [d1={-1:0}, d2={1:0}] [L33] CALL, EXPR get_dummy() VAL [d1={-1:0}, d2={1:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={-1:0}, d1={-1:0}, d2={1:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={-1:0}, d2={1:0}, get_dummy()={-1:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() VAL [d1={-1:0}, d2={1:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={-1:0}, d1={-1:0}, d2={1:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={-1:0}, d2={1:0}, get_dummy()={-1:0}, pd1={-1:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() VAL [d1={-1:0}, d2={1:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=0, __VERIFIER_nondet_bool() ? &d1 : &d2={1:0}, d1={-1:0}, d2={1:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={-1:0}, d2={1:0}, get_dummy()={1:0}, pd1={-1:0}, pd2={-1:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [(*pd2).a=6, d1={-1:0}, d2={1:0}, i=0, pd1={-1:0}, pd1 != 0 && pd1 == pd2 && (*pd2).a > 0=1, pd2={-1:0}, pd3={1:0}] [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) VAL [\read(*pa)=6, d1={-1:0}, d2={1:0}, i=7, pa={-1:0}, pd1={-1:0}, pd2={-1:0}, pd3={1:0}] [L38] COND FALSE !(i < *pa) [L41] CALL, EXPR check(pd2, i) VAL [\old(i)=7, d1={-1:0}, d2={1:0}, s1={-1:0}] [L27] EXPR s1->a [L27] return s1->a == i; [L41] RET, EXPR check(pd2, i) VAL [check(pd2, i)=0, d1={-1:0}, d2={1:0}, i=7, pa={-1:0}, pd1={-1:0}, pd2={-1:0}, pd3={1:0}] [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() VAL [d1={-1:0}, d2={1:0}, i=7, pa={-1:0}, pd1={-1:0}, pd2={-1:0}, pd3={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. UNSAFE Result, 2.2s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 71 SDtfs, 68 SDslu, 334 SDs, 0 SdLazy, 337 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=2, 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, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 13876 SizeOfPredicates, 12 NumberOfNonLiveVariables, 182 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 30/36 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...