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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-regression/test23-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:01:37,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:01:37,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:01:37,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:01:37,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:01:37,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:01:37,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:01:37,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:01:37,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:01:37,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:01:37,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:01:37,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:01:37,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:01:37,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:01:37,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:01:37,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:01:37,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:01:37,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:01:37,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:01:37,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:01:37,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:01:37,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:01:37,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:01:37,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:01:37,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:01:37,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:01:37,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:01:37,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:01:37,479 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 [2019-10-15 01:01:37,493 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:01:37,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:01:37,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:01:37,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:01:37,495 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:01:37,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:01:37,495 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:01:37,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:01:37,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:01:37,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:01:37,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:01:37,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:01:37,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:01:37,497 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:01:37,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:01:37,498 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:01:37,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:01:37,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:01:37,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:01:37,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:01:37,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:01:37,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:01:37,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:01:37,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:01:37,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:01:37,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:01:37,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:01:37,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:01:37,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:01:37,776 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:01:37,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:01:37,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:01:37,797 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:01:37,797 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:01:37,798 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test23-2.c [2019-10-15 01:01:37,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee1bd182/ee91031126ee4c0baa26e5a9061a9788/FLAG2f8d345f4 [2019-10-15 01:01:38,326 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:01:38,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test23-2.c [2019-10-15 01:01:38,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee1bd182/ee91031126ee4c0baa26e5a9061a9788/FLAG2f8d345f4 [2019-10-15 01:01:38,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee1bd182/ee91031126ee4c0baa26e5a9061a9788 [2019-10-15 01:01:38,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:01:38,691 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:01:38,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:01:38,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:01:38,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:01:38,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:01:38" (1/1) ... [2019-10-15 01:01:38,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38316c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:38, skipping insertion in model container [2019-10-15 01:01:38,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:01:38" (1/1) ... [2019-10-15 01:01:38,708 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:01:38,728 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:01:38,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:01:38,946 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:01:38,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:01:39,072 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:01:39,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:39 WrapperNode [2019-10-15 01:01:39,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:01:39,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:01:39,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:01:39,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:01:39,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:39" (1/1) ... [2019-10-15 01:01:39,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:39" (1/1) ... [2019-10-15 01:01:39,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:39" (1/1) ... [2019-10-15 01:01:39,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:39" (1/1) ... [2019-10-15 01:01:39,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:39" (1/1) ... [2019-10-15 01:01:39,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:39" (1/1) ... [2019-10-15 01:01:39,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:39" (1/1) ... [2019-10-15 01:01:39,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:01:39,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:01:39,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:01:39,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:01:39,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:39" (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 [2019-10-15 01:01:39,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:01:39,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:01:39,190 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-10-15 01:01:39,190 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2019-10-15 01:01:39,190 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-10-15 01:01:39,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:01:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:01:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:01:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-15 01:01:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-15 01:01:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:01:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2019-10-15 01:01:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-15 01:01:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:01:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:01:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:01:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:01:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:01:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:01:39,506 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:01:39,507 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:01:39,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:01:39 BoogieIcfgContainer [2019-10-15 01:01:39,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:01:39,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:01:39,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:01:39,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:01:39,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:01:38" (1/3) ... [2019-10-15 01:01:39,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1067c52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:01:39, skipping insertion in model container [2019-10-15 01:01:39,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:39" (2/3) ... [2019-10-15 01:01:39,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1067c52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:01:39, skipping insertion in model container [2019-10-15 01:01:39,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:01:39" (3/3) ... [2019-10-15 01:01:39,516 INFO L109 eAbstractionObserver]: Analyzing ICFG test23-2.c [2019-10-15 01:01:39,525 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:01:39,533 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:01:39,544 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:01:39,568 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:01:39,568 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:01:39,568 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:01:39,568 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:01:39,568 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:01:39,569 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:01:39,569 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:01:39,569 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:01:39,587 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-15 01:01:39,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-15 01:01:39,593 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:39,596 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 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] [2019-10-15 01:01:39,598 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:39,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:39,603 INFO L82 PathProgramCache]: Analyzing trace with hash -128514638, now seen corresponding path program 1 times [2019-10-15 01:01:39,610 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:39,610 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039798401] [2019-10-15 01:01:39,611 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:39,611 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:39,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:01:39,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039798401] [2019-10-15 01:01:39,799 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:01:39,800 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:01:39,800 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467199619] [2019-10-15 01:01:39,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:01:39,818 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:01:39,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:01:39,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:01:39,839 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-10-15 01:01:39,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:01:39,867 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2019-10-15 01:01:39,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:01:39,868 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2019-10-15 01:01:39,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:01:39,876 INFO L225 Difference]: With dead ends: 46 [2019-10-15 01:01:39,877 INFO L226 Difference]: Without dead ends: 28 [2019-10-15 01:01:39,880 INFO L600 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 [2019-10-15 01:01:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-15 01:01:39,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-15 01:01:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-15 01:01:39,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-10-15 01:01:39,927 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 30 [2019-10-15 01:01:39,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:01:39,930 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-10-15 01:01:39,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:01:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-10-15 01:01:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-15 01:01:39,933 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:39,933 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 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] [2019-10-15 01:01:39,934 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:39,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:39,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1246729484, now seen corresponding path program 1 times [2019-10-15 01:01:39,935 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:39,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881430288] [2019-10-15 01:01:39,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:39,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:39,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:40,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:01:40,376 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881430288] [2019-10-15 01:01:40,376 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:01:40,377 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-15 01:01:40,377 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279454748] [2019-10-15 01:01:40,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:01:40,379 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:01:40,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:01:40,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:01:40,380 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 11 states. [2019-10-15 01:01:40,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:01:40,798 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2019-10-15 01:01:40,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:01:40,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2019-10-15 01:01:40,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:01:40,805 INFO L225 Difference]: With dead ends: 54 [2019-10-15 01:01:40,805 INFO L226 Difference]: Without dead ends: 46 [2019-10-15 01:01:40,808 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:01:40,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-15 01:01:40,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2019-10-15 01:01:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-15 01:01:40,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2019-10-15 01:01:40,838 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 31 [2019-10-15 01:01:40,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:01:40,839 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2019-10-15 01:01:40,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:01:40,839 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2019-10-15 01:01:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-15 01:01:40,841 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:40,841 INFO L380 BasicCegarLoop]: trace histogram [2, 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] [2019-10-15 01:01:40,842 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:40,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:40,843 INFO L82 PathProgramCache]: Analyzing trace with hash -824027658, now seen corresponding path program 1 times [2019-10-15 01:01:40,843 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:40,843 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648425901] [2019-10-15 01:01:40,844 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:40,844 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:40,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:01:41,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648425901] [2019-10-15 01:01:41,003 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063337586] [2019-10-15 01:01:41,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:01:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:41,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-15 01:01:41,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:01:41,145 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2019-10-15 01:01:41,147 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-10-15 01:01:41,162 INFO L567 ElimStorePlain]: treesize reduction 14, result has 22.2 percent of original size [2019-10-15 01:01:41,162 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:01:41,163 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2019-10-15 01:01:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:01:41,209 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:01:41,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:01:41,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1284016254] [2019-10-15 01:01:41,341 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 32 [2019-10-15 01:01:41,382 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:01:41,383 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:01:41,471 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-15 01:01:41,474 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 13 root evaluator evaluations with a maximum evaluation depth of 0. Performed 13 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 20 variables. [2019-10-15 01:01:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:41,479 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-15 01:01:41,538 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-10-15 01:01:41,538 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-15 01:01:41,541 INFO L553 sIntCurrentIteration]: We unified 30 AI predicates to 30 [2019-10-15 01:01:41,542 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-15 01:01:41,542 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:01:41,543 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11, 11, 11] total 15 [2019-10-15 01:01:41,543 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508562054] [2019-10-15 01:01:41,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:01:41,545 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-15 01:01:41,545 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-15 01:01:41,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:01:41,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:01:41,545 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 2 states. [2019-10-15 01:01:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:01:41,550 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2019-10-15 01:01:41,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:01:41,550 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-10-15 01:01:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:01:41,551 INFO L225 Difference]: With dead ends: 37 [2019-10-15 01:01:41,551 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:01:41,553 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:01:41,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:01:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:01:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:01:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:01:41,554 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-10-15 01:01:41,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:01:41,554 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:01:41,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:01:41,555 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:01:41,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:01:41,762 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:01:41,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:01:41,802 INFO L443 ceAbstractionStarter]: For program point initEXIT(lines 12 19) no Hoare annotation was computed. [2019-10-15 01:01:41,802 INFO L446 ceAbstractionStarter]: At program point initENTRY(lines 12 19) the Hoare annotation is: true [2019-10-15 01:01:41,802 INFO L443 ceAbstractionStarter]: For program point initFINAL(lines 12 19) no Hoare annotation was computed. [2019-10-15 01:01:41,802 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:01:41,803 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:01:41,803 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:01:41,803 INFO L443 ceAbstractionStarter]: For program point get_dummyFINAL(lines 21 24) no Hoare annotation was computed. [2019-10-15 01:01:41,803 INFO L446 ceAbstractionStarter]: At program point get_dummyENTRY(lines 21 24) the Hoare annotation is: true [2019-10-15 01:01:41,803 INFO L443 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-10-15 01:01:41,803 INFO L443 ceAbstractionStarter]: For program point get_dummyEXIT(lines 21 24) no Hoare annotation was computed. [2019-10-15 01:01:41,803 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:01:41,803 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: false [2019-10-15 01:01:41,803 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:01:41,804 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:01:41,804 INFO L446 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: true [2019-10-15 01:01:41,804 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 31 52) no Hoare annotation was computed. [2019-10-15 01:01:41,804 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 31 52) no Hoare annotation was computed. [2019-10-15 01:01:41,804 INFO L446 ceAbstractionStarter]: At program point L44(lines 32 52) the Hoare annotation is: true [2019-10-15 01:01:41,804 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2019-10-15 01:01:41,805 INFO L443 ceAbstractionStarter]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2019-10-15 01:01:41,805 INFO L446 ceAbstractionStarter]: At program point L40-3(lines 40 42) the Hoare annotation is: true [2019-10-15 01:01:41,805 INFO L443 ceAbstractionStarter]: For program point L36(lines 36 46) no Hoare annotation was computed. [2019-10-15 01:01:41,805 INFO L446 ceAbstractionStarter]: At program point L40-4(lines 40 42) the Hoare annotation is: true [2019-10-15 01:01:41,805 INFO L443 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2019-10-15 01:01:41,806 INFO L443 ceAbstractionStarter]: For program point L36-2(lines 36 46) no Hoare annotation was computed. [2019-10-15 01:01:41,806 INFO L446 ceAbstractionStarter]: At program point L34-1(line 34) the Hoare annotation is: true [2019-10-15 01:01:41,806 INFO L443 ceAbstractionStarter]: For program point L34-2(line 34) no Hoare annotation was computed. [2019-10-15 01:01:41,806 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 31 52) the Hoare annotation is: true [2019-10-15 01:01:41,806 INFO L443 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2019-10-15 01:01:41,806 INFO L443 ceAbstractionStarter]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2019-10-15 01:01:41,806 INFO L446 ceAbstractionStarter]: At program point checkENTRY(lines 26 29) the Hoare annotation is: true [2019-10-15 01:01:41,806 INFO L443 ceAbstractionStarter]: For program point checkFINAL(lines 26 29) no Hoare annotation was computed. [2019-10-15 01:01:41,806 INFO L443 ceAbstractionStarter]: For program point checkEXIT(lines 26 29) no Hoare annotation was computed. [2019-10-15 01:01:41,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:01:41 BoogieIcfgContainer [2019-10-15 01:01:41,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:01:41,817 INFO L168 Benchmark]: Toolchain (without parser) took 3125.55 ms. Allocated memory was 137.9 MB in the beginning and 234.4 MB in the end (delta: 96.5 MB). Free memory was 101.3 MB in the beginning and 121.0 MB in the end (delta: -19.7 MB). Peak memory consumption was 76.8 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:41,817 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory is still 119.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-15 01:01:41,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.45 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.3 MB in the beginning and 181.3 MB in the end (delta: -80.0 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:41,819 INFO L168 Benchmark]: Boogie Preprocessor took 56.47 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 179.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:41,821 INFO L168 Benchmark]: RCFGBuilder took 376.69 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 161.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:41,823 INFO L168 Benchmark]: TraceAbstraction took 2305.43 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 160.9 MB in the beginning and 121.0 MB in the end (delta: 39.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:41,831 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 137.9 MB. Free memory is still 119.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 382.45 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.3 MB in the beginning and 181.3 MB in the end (delta: -80.0 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.47 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 179.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 376.69 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 161.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2305.43 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 160.9 MB in the beginning and 121.0 MB in the end (delta: 39.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: 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: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 44 SDslu, 158 SDs, 0 SdLazy, 140 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=2, 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, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 16 PreInvPairs, 16 NumberOfFragments, 12 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 12361 SizeOfPredicates, 2 NumberOfNonLiveVariables, 159 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 10/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 139, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 1.0, AVG_VARS_REMOVED_DURING_WEAKENING: 1.2666666666666666, AVG_WEAKENED_CONJUNCTS: 0.0, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...